(clviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-12-29 22:40:39 GMT

---

1. Why does an empty string in Python sometimes take up 49 bytes and sometimes 51? - [45/2]
2. Groupby class and count missing values in features - [14/3]
3. Force elements at beginning and end of list - [11/7]
4. Large amount of lists concatenation - [9/6]
5. differences for creating set using set() or {} - [6/5]
6. How to search for a substring, find the beginning and ending, and then check if that data is a weekday? - [6/5]
7. How to delete list item automatically in python? - [6/4]
8. How to calculate the average of the most recent three non-nan value using Python - [6/3]
9. Compute the last (decimal) digit of x1 ^ (x2 ^ (x3 ^ (... ^ xn))) - [6/3]
10. How to use while(i = getNext()) pattern in python - [6/2]

(clvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-12-22 19:09:22 GMT

---

1. Getting first n unique elements from Python list - [17/10]
2. Is integer division always equal to the floor of regular division? - [15/3]
3. How can I get a Wikipedia article's text using Python 3 with Beautiful Soup? - [13/6]
4. Count separators in CSV rows with Pandas - [12/4]
5. How to split each individual value between two string in Python - [9/6]
6. How to find out the magic number for the .pyc header in Python 3 - [9/2]
7. Repeating array with transformation - [8/6]
8. Rename named parameter in Python to avoid naming conflicts with import statement - [7/5]
9. Variable X not updating when variables that should effect X change - [7/4]
10. How to find an intersection of two list of dictionaries based on a key? - [7/4]

(clvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-12-15 14:32:38 GMT

---

1. Is is safe to use next within a for loop in Python? - [18/3]
2. Performant cartesian product (CROSS JOIN) with pandas - [14/3]
3. Why does pandas merge on NaN? - [14/1]
4. Use columns 1 and 2 to populate column 3 - [10/4]
5. Setting flag column depending on whether column contains a given string - [10/2]
6. __init__ function definition without self - [10/1]
7. Why does isinstance require a tuple instead of any iterable? - [9/0]
8. Is there an efficient method of checking whether a column has mixed dtypes? - [8/4]
9. Python random.Random(bytearray) TypeError: unhashable type - [8/2]
10. Pythonic way to fill rows with date range - [7/3]

(clv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-12-08 16:54:21 GMT

---

1. Pandas Merging 101 - [28/1]
2. Finding highest value in a dictionary - [11/3]
3. Pandas measure elapsed time since a condition - [9/5]
4. Replace 1s in one hot columns with values from another column - [8/4]
5. Why do circular imports cause problems with object identity using `isinstance`? - [8/3]
6. What does `exit` keyword do in Python3 with Jupyter Notebook? - [8/3]
7. How to Reverse Sort a nested list starting with Uppercase entries? - [8/1]
8. How to efficiently partial argsort Pandas dataframe across columns - [8/1]
9. Pandas dataframe: Remove secondary upcoming same value - [7/8]
10. Get cumulative count per 2d array - [7/3]

(cliv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-12-01 21:40:29 GMT

---

1. Longest word chain from a list of words - [28/9]
2. Why is 2 * x * x faster than 2 * ( x * x ) in Python? - [19/5]
3. Do Python lambda functions help in reducing the execution times? - [14/1]
4. Python function that identifies if the numbers in a list or array are closer to 0 or 1 - [11/10]
5. Finding three integers such that their sum of cosine values become max - [9/5]
6. Finding singulars/sets of local maxima/minima in a 1D-NumPy array (once again) - [9/3]
7. Improve accuracy of image processing to count fungus spores - [9/2]
8. Advanced Python Regex: how to evaluate and extract nested lists and numbers from a multiline string? - [8/2]
9. Count appearances of a value until it changes to another value - [7/5]
10. What is happening when I assign a list with self references to a list copy with the slice syntax `mylist[:] = [mylist, mylist, ...]`? - [7/3]

(cliii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-11-24 10:00:11 GMT

---

1. How do I create a sum row and sum column in pandas? - [8/3]
2. Numpy performance differences depending on numerical values - [8/1]
3. multivariable linearization in python: 'Pow' object has no attribute 'sqrt' - [7/2]
4. Python: How to subclass while calling parent class? - [7/1]
5. How can I find specified string matching filter patterns with Pandas - [6/3]
6. Why is ‘==‘ coming before ‘in’ in Python? - [6/2]
7. For loop to print old value and sum of old value - [6/1]
8. Python 3 equivalent of Python 2 str.decode('hex') - [6/1]
9. I am so confused about Object in JavaScript - [6/1]
10. Python dataclasse from dict - [6/0]

(clii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-11-18 07:41:57 GMT

---

1. Deprecation status of the NumPy matrix class - [31/1]
2. Why does an imported function "as" another name keep its original __name__? - [13/3]
3. Cumulative apply within window defined by other columns - [9/2]
4. Merging data based on matching first column in Python - [8/4]
5. How do you remove values not in a cluster using a pandas data frame? - [7/1]
6. check if letters of a string are in sequential order in another string - [6/6]
7. Make a new list depending on group number and add scores up as well - [6/5]
8. Trying to find sums of unique values within a nested dictionary. (See example!) - [6/3]
9. Can generating permutations be done in parallel? - [6/1]
10. Is there a builtin way to define a function that takes either 1 argument or 3? - [6/1]

(cli) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-11-10 17:22:00 GMT

---

1. Why are Python operations 30× slower after calling time.sleep or subprocess.Popen? - [12/1]
2. Capture all numbers up to three digits - [11/2]
3. How do I operate on a DataFrame with a Series for every column - [11/2]
4. How to make a function composer - [10/3]
5. Detect if class was defined declarative or functional - possible? - [9/3]
6. Cumulative addition in a list based on an indices list - [8/8]
7. Only copy one key-column into merged DataFrame - [8/5]
8. Pythonic way of collapsing/grouping a list to aggregating max/min - [8/3]
9. What is the purpose of "a and a or b"? - [8/1]
10. Numpy: Efficient way to convert indices of a square matrix to its upper triangular indices - [7/6]

(cl) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-11-03 15:57:59 GMT

---

1. What is a Pythonic way of doing the following transformation on a list of dicts? - [22/8]
2. How to add count for each unique val in list - [12/4]
3. List comprehension to extract multiple fields from list of tuples - [11/4]
4. Pandas: compare list objects in Series - [8/4]
5. Numpy custom Cumsum function with upper/lower limits? - [8/2]
6. What is the guarantee made by itertools.combinations? - [8/1]
7. Why is random number generator tf.random_uniform in tensorflow much faster than the numpy equivalent - [7/2]
8. mean from pandas and numpy differ - [7/0]
9. How to capitalize first letter in strings that may contain numbers - [6/13]
10. operator precedence of floor division and division - [6/7]

(cxlix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-10-27 21:39:49 GMT

---

1. Different object size of True and False in Python 3 - [38/4]
2. "except Foo as bar" causes "bar" to be removed from scope - [34/3]
3. Generator expression uses list assigned after the generator's creation - [14/5]
4. Replace multiple elements in numpy array with 1 - [11/3]
5. Randomly capitalize letters in string - [8/6]
6. "with" syntax for opening files with two functions - [7/3]
7. Why is a NamedTuple containing mutable objects hashable, when a Tuple containing mutable objects is not? - [7/1]
8. Is the list of levels in a Pandas dataframe guaranteed to be sorted? - [7/1]
9. Pickling dict in Python - [6/5]
10. Python - Swap values in multiple dataframes - [6/5]

(cxlviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-10-21 07:11:42 GMT

---

1. round() returns different result depending on the number of arguments - [29/3]
2. pandas - how to get last n groups of a groupby object and combine them as a dataframe - [9/4]
3. How to make sys.stdout flush whenever sys.stdin.readline() is about to block? - [9/1]
4. Scipy Circular Variance - [8/4]
5. Achieving shell-like pipeline performance in Python - [8/3]
6. RecursionError: maximum recursion depth exceeded in comparison - [8/2]
7. Python 2d array boolean reduction - [7/5]
8. Why do I fail to predict y=x**4 with Keras? (y=x**3 works) - [7/3]
9. Better method to iterate over 3 lists - [7/3]
10. Flask session doesn't update consistently with parallel requests - [7/1]

(cxlvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-10-13 21:36:41 GMT

---

1. Is i = i + n truly the same as i += n? - [40/3]
2. How come list element lookup is O(1) in Python? - [24/3]
3. Pandas DataFrame to multidimensional NumPy Array - [14/1]
4. Get previous business day in a DataFrame - [11/5]
5. Why does the UnboundLocalError occur on the second variable of the flat comprehension? - [9/1]
6. How can I count the number of consecutive TRUEs in a DataFrame? - [8/2]
7. Why is an __init__ skipped when doing Base.__init__(self) in multiple inheritance instead of super().__init__()? - [8/1]
8. Pipenv trouble on MacOS "TypeError: 'module' object is not callable" - [8/1]
9. Pandas any() returning false with true values present - [8/1]
10. In Python, if I type a=1 b=2 c=a c=b, what is the value of c? What does c point to? - [7/8]

(cxlvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-10-06 21:03:54 GMT

---

1. Speed comparison. numpy vs python standard - [9/2]
2. Performance of Pandas apply vs np.vectorize to create new column from existing columns - [8/2]
3. Cycling values of a list - [7/6]
4. pip install AttributeError: _DistInfoDistribution__dep_map - [7/1]
5. How to run Python in Android App which is developed in Kotlin? - [7/0]
6. How to check if 2 dicts are equal except some fields? - [6/7]
7. Double dice graphics in Python - [6/6]
8. Fast looping through Python dataframe with previous row reference - [6/3]
9. How to use super() in an awaitable subclass? - [6/2]
10. define a function use other function names as parameter - [6/2]

(cxlv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-09-30 08:57:03 GMT

---

1. Multiple assignments in python - [22/2]
2. Why is this loop faster than a dictionary comprehension for creating a dictionary? - [21/2]
3. Accessing dictionary items by position in Python 3.6+ efficiently - [18/2]
4. Periodically replacing values in a list - [17/7]
5. Call function without optional arguments if they are None - [17/6]
6. Merging Python decorators with arguments into a single one - [15/3]
7. Create a new column only if values differ - [11/4]
8. Split pandas dataframe into multiple dataframes based on null columns - [10/2]
9. Efficiently finding the previous key in an OrderedDictionary - [9/5]
10. Slicing a list into sublists based on condition - [8/4]

(cxliv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-09-22 17:07:37 GMT

---

1. How come regex match objects aren't iterable even though they implement __getitem__? - [38/1]
2. Associating two item in a list - [12/6]
3. Store filtered output of cmd command in a variable - [9/2]
4. Pandas DataFrame check if column value exists in a group of columns - [8/5]
5. Merge tuples with the same key - [8/4]
6. Python's list comprehension: Modify list elements if a certain value occurs - [7/5]
7. Set half of the filters of a layer as not trainable keras/tensorflow - [7/1]
8. Removing duplicates on very large datasets - [6/4]
9. Pros and Cons of splitting development dependencies - [6/3]
10. Why do some regex engines match .* twice in a single input string? - [6/1]

(cxliii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-09-15 20:02:19 GMT

---

1. Remainder function (%) runtime on numpy arrays is far longer than manual remainder calculation - [29/1]
2. Same name functions in same class, elegant way to determine which to call? - [24/7]
3. Why does adding a semicolon in Python change the result? - [13/2]
4. Returning int from a __str__ method in Python - [12/5]
5. Python - For loop millions of rows - [12/4]
6. Check if two file pointers point to same file in Python - [12/1]
7. Why can't eval find a variable defined in an outer function? - [9/1]
8. What do Unix Timestamps actually track? - [8/1]
9. How can I find out which index is out of range? - [7/5]
10. Can I replace an existing method of an object in Python? - [7/3]

(cxlii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-09-08 19:57:14 GMT

---

1. Converting list of lists into a dictionary of dictionaries in Python - [13/5]
2. Back and forth loop Python - [10/8]
3. When and how should I use super? - [9/1]
4. Why are properties class attributes in Python? - [6/5]
5. Manipulate pandas dataframe to display desired output - [6/5]
6. Why is python dict creation from list of tuples 3x slower than from kwargs - [6/3]
7. Get all possible str partitions of any length - [6/3]
8. Insert element into numpy array and get all rolled permutations - [6/3]
9. Unable to click on signs on a map - [6/2]
10. Generate a list a(n) is not of the form prime + a(k), k < n - [6/2]

(cxli) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-09-01 12:22:38 GMT

---

1. Filter integers in numpy float array - [16/6]
2. How to sum elements in list of dictionaries if two key values are the same - [10/3]
3. Python is, == operator precedence - [10/2]
4. Removing dupes in list of lists in Python - [9/4]
5. Why is `function` not a keyword in Python? - [9/3]
6. Why does TensorFlow always use GPU 0? - [9/0]
7. Is it possible to refer to the owner class that an object belongs to as an attribute? - [8/3]
8. how is total loss calculated over multiple classes in Keras? - [8/1]
9. Merge pairs on common integer with restrictions - [8/1]
10. taking the first non null in python - [7/3]

(cxl) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-08-25 19:30:09 GMT

---

1. Find position of maximum per unique bin (binargmax) - [19/7]
2. python a,b = b,a implementation? How is it different from C++ swap function? - [14/4]
3. Data structure for arrays which share some elements -- Python - [12/5]
4. Replace a word in list and append to same list - [11/7]
5. pandas groupby aggregate element-wise list addition - [10/3]
6. When are python sunder names used? - [9/1]
7. Iterate consecutive elements in a list in Python such that the last element combines with first - [7/9]
8. How to count the number of columns with a value on each row in python? - [7/6]
9. Group by and aggregate columns but create NaN if values do not match - [7/2]
10. How to iterate over lambda functions in java? - [7/2]

(cxxxix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-08-18 11:06:51 GMT

---

1. Problems with using a rough greyscale algorithm? - [37/8]
2. Collatz Conjecture Python - Incorrect Output Above 2 Trillion (Only!) - [28/1]
3. if-else vs "or" operation for None-check - [15/6]
4. Faster Python technique to count triples from a list of numbers that are multiples of each other - [14/5]
5. Python: What happens if script stops while requests.get() is executing? - [13/1]
6. Extending a class by parameter in Python - [12/2]
7. How do I shorten this boolean expression? - [10/6]
8. Getting outer environment arguments from java using graal python - [8/1]
9. Is the File-Object iterator "broken?" - [8/1]
10. Swapping list elements in python where the expressions contain function calls - [8/1]

(cxxxviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-08-11 16:23:07 GMT

---

1. Is there a way to "fork" a list in two based on a condition - [13/6]
2. What is the difference between "append" and "+" in python? - [8/6]
3. How do I check the default decimal precision when converting float to str? - [8/3]
4. Set all values in one column to NaN if the corresponding values in another column are also NaN - [7/5]
5. How to detect method calls made by Python behind the scenes? - [7/1]
6. How to round away from 0 in Python 3.x? - [6/6]
7. Merge list item with previous list item - [6/4]
8. Why is this range variable declared before being used? - [6/3]
9. How to open the option items of a select tag (dropdown) in different tabs/windows? - [6/3]
10. Sum a column by ID, but skip the first instance? - [6/3]

(cxxxvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-08-04 18:16:54 GMT

---

1. Difference between a 'for' loop and map - [22/4]
2. When does Python check whether a concrete subclass of an ABC implements the required methods? - [10/2]
3. Alternative methods of initializing floats to '+inf', '-inf' and 'nan' - [8/5]
4. pandas pivot and join in two dataframes - [7/5]
5. Why does "_" not always give me the last result in interactive shell - [7/1]
6. Efficient Method of finding common files between two given paths in Python - [6/1]
7. Split string into list of two words, repeating the last word - [5/5]
8. NumPy: Selecting n points every m points - [5/3]
9. Is it possible to create class with unknown attributes in Python? - [5/2]
10. convert rows to columns in pandas dataframe - [5/2]

(cxxxvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-07-29 06:14:37 GMT

---

1. In python, why does 0xbin() return False? - [140/4]
2. Why do two identical lists have a different memory footprint? - [78/2]
3. Why did pip upgrade from version 10 to version 18? - [39/1]
4. How come I can add the boolean value False but not True in a set in Python? - [20/3]
5. How to remove every occurrence of sub-list from list - [15/9]
6. Python: round float values to interval limits / grid - [9/5]
7. Transforming a dict to another structure in Python - [9/3]
8. Checking that a pandas.Series.index contains a value - [8/2]
9. Is there a difference between : "file.readlines()", "list(file)" and "file.read().splitlines(True)"? - [7/4]
10. What is Numpy equivalence of dataframe.loc() in Pandas - [7/2]

(cxxxv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-07-21 21:21:06 GMT

---

1. What is the n parameter of tkinter.mainloop function? - [14/1]
2. Find different pair in a list by python - [11/6]
3. Fastest way to create a pandas column conditionally - [11/1]
4. With assignment expressions in Python 3.8, why do we need to use `as` in `with`? - [9/1]
5. Python: When should we name the parameters we're passing? - [8/3]
6. Python 3 generator comprehension to generate chunks including last - [7/7]
7. pandas iteratively update column values - [7/4]
8. Convert 1d array to lower triangular matrix - [7/3]
9. Extract string if match the value in another list - [7/1]
10. Inconsistent behavior of jitted function - [7/1]

(cxxxiv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-07-14 20:51:04 GMT

---

1. Remove item from list based on the next item in same list - [10/9]
2. Create dict from list of list - [10/7]
3. In Python, how to drop into the debugger in an except block and have access to the exception instance? - [8/2]
4. Python: Extracting lists from list with module or regular expression - [6/6]
5. How to perform contain operation between a numpy array and a vector row-wise? - [6/5]
6. How can I replace OrderedDict with dict in a Python AST before literal_eval? - [6/3]
7. python .exe not working properly - [6/2]
8. Make python's compile strip docstrings but not asserts - [6/1]
9. Numpy performance gap between len(arr) and arr.shape[0] - [6/1]
10. Python: Why is “~” now included in the set of reserved characters in urllib.parse.quote()? - [6/0]

(cxxxiii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-07-07 20:57:19 GMT

---

1. In Python 2, why do lists compare as greater than numbers? And why tuples greater than lists? - [24/3]
2. Find most efficient groups of pairs - [17/6]
3. insert data from two lists to dict with for loop - [7/6]
4. How to get dict of first two indexes for multi index data frame - [7/3]
5. Python - Delete duplicates in a dataframe based on two columns combinations? - [7/3]
6. All possible subdivisions of a list - [7/3]
7. Why is a NumPy int not an instance of a Python int, but a NumPy float is an instance of a Python float? - [7/2]
8. How can I display all numbers in range 0-N that are "super numbers" - [6/8]
9. How to generates a list which elements are at a fix distance from a desired list - [6/4]
10. Why is eval('"\x27"') == eval('"\\x27"')? - [6/3]

(cxxxii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-06-30 20:45:29 GMT

---

1. Python 3.7: Utility of Dataclasses and SimpleNameSpace - [13/2]
2. Python 3.7: dataclass does not raise `TypeError` for `eq=False` - [13/2]
3. Are nested format specifications legal? - [11/1]
4. Marking the entire group if condition is true for a single row - [10/3]
5. Efficient Way of making a set of tuple in which the order of tuple doesn't matters - [8/3]
6. Vectorized assignment in Numpy - [8/3]
7. Integrating Keras model into TensorFlow - [8/2]
8. python - how to implement a C-function as awaitable (coroutine) - [7/1]
9. Python fold/reduce composition of multiple dictionaries - [7/1]
10. Single Thread Impacts Model Accuracy and Loss with TensorFlow Keras Backend - [7/0]

(cxxxi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-06-24 06:26:59 GMT

---

1. Why does `None is None is None` return True? - [36/3]
2. Is there a better way to format these 3 integers (hours, mins, secs) to `00:00:00`? - [16/0]
3. Why does numpy.median scale so well? - [11/1]
4. Replace patterns of a list of any type of object similar to .replace for strings - [9/4]
5. Expand a dict containing list items into a list of dict pairs - [8/7]
6. Pandas dataframe to dict of dict - [8/2]
7. Sorting a dictionary with multiple sized values - [7/2]
8. what is the difference between 'import a.b as b' and 'from a import b' in python - [6/3]
9. mypy, type hint: Union[float, int] -> is there a Number type? - [6/1]
10. Best way to add pandas DataFrame column to row - [6/1]

(cxxx) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-06-16 18:06:47 GMT

---

1. Interleave 4 lists of same length python - [14/7]
2. Split string into two parts only - [12/10]
3. Compare a list to a list of tuple to get another list - [9/2]
4. Replicating rows in Pandas - [8/4]
5. Speed of copying numpy array - [8/3]
6. Randomly select values from list but with character length restriction - [8/2]
7. Uncommon behaviour of IS operator in python - [7/4]
8. Pandas pd.Series.isin performance with set versus array - [7/2]
9. Second argument of the iter() method - [7/2]
10. R internal handling of sparse matrices - [7/0]

(cxxix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-06-09 20:27:06 GMT

---

1. How to treat NULL as a normal string with pandas? - [20/4]
2. What's the difference between namedtuple and NamedTuple? - [16/1]
3. Why is using a key function so much slower? - [14/2]
4. Implicit conversion while comparing numeric values in Python - [10/2]
5. Reassign dictionary values - [9/5]
6. Why are my balls sticking together? - [8/2]
7. Column/row slicing a torch sparse tensor - [8/1]
8. How to create new column in Pandas with condition to repeat by a value of another column? - [7/5]
9. python/numpy combine subarrays 4 rows at a time - [7/4]
10. IndentationError: unexpected indent after comment - [7/3]

(cxxviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-06-03 12:29:28 GMT

---

1. Creating a nested dictionary from a flattened dictionary - [32/6]
2. Argsorting values in a list of lists - [15/4]
3. Stepping with multiple values while slicing an array in Python - [14/7]
4. Generate unique binary permutations in python - [13/4]
5. Why is a**2 != a * a for some floats? - [11/2]
6. Randomly shuffle items in each row of numpy array - [10/5]
7. Python class that returns False with bool(TheClassItself) - [10/1]
8. Pandas: Selecting and modifying dataframe based on even more complex criteria - [9/3]
9. Throwing ZeroDivisionError - [9/1]
10. Nested (double) row by row iteration of a Pandas DataFrame - [8/1]

(cxxvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-05-26 21:36:24 GMT

---

1. Why does integer division round down in many scripting languages? - [31/5]
2. Celery AttributeError: async error - [16/5]
3. Fast punctuation removal with pandas - [12/3]
4. How to covert 1d array to Logical matrix - [9/2]
5. Other options instead of using try-except - [8/5]
6. Why do changes to a nested dict inside dict2 affect dict1? - [7/3]
7. How to make a triple equivalence dictionary? - [7/3]
8. Merging pandas dataframes on 2 columns but in either order - [7/3]
9. Creating a dict of dicts - [7/2]
10. Pandas: Get per-year counts for Dateranges spanning multiple years - [6/3]

(cxxvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-05-19 16:55:29 GMT

---

1. What is the best way to interleave two lists? - [17/6]
2. Pandas groupby.size vs series.value_counts vs collections.Counter with multiple series - [16/1]
3. Python logic help - Print the top "n" users - [11/6]
4. Why are attributes lost after copying a Pandas DataFrame - [11/4]
5. How does Python convert bytes into float? - [11/1]
6. Pythonic way to create a dictionary from a list where the keys are the elements that are found in another list and values are elements between keys - [9/7]
7. How does numpy addition work? - [7/3]
8. Compare values of a dictionary and return a count of matching values - [7/3]
9. Why does isinstance return the wrong value only inside a series map? - [7/2]
10. Is it possible to limit the number of coroutines running corcurrently in asyncio? - [6/2]

(cxxv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-05-12 21:53:40 GMT

---

1. Why does "test".count('') return 5? - [11/2]
2. Python multiprocessing performance only improves with the square root of the number of cores used - [10/1]
3. Compute co-occurrence matrix by counting values in cells - [9/4]
4. Groupby on pandas dataframe and concatenate strings with comma based on the frequency of values in a column - [9/3]
5. Difference between "from x.y import z" and "import x.y.z as z" - [9/2]
6. Label encoding across multiple columns with same attributes in sckit-learn - [8/5]
7. How many local variables can a Python (CPython implementation) function possibly hold? - [8/2]
8. Why does CPython have a "POP_BLOCK" opcode? - [7/2]
9. How to group functions without side effects? - [7/1]
10. Match list elements from two lists that sum to the same amount - [7/1]

(cxxiv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-05-05 17:33:24 GMT

---

1. python generators garbage collection - [23/2]
2. Deleting elements of a list based on a condition - [13/2]
3. Subtracting columns based on key column in pandas dataframe - [8/3]
4. Function speed improvement: Convert ints to list of 32bit ints - [7/2]
5. Handle Turkish uppercase and lowercase correctly, need to modify/override built-in functions? - [7/0]
6. How can I unpack sequence? - [6/3]
7. numpy summing matrix-rows by indices - [6/2]
8. How to determine if one list contains another? - [5/4]
9. A recipe to group/aggregate data? - [5/3]
10. python turtle weird cursor jump - [5/3]

(cxxiii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-04-28 20:38:22 GMT

---

1. Bidirectional data structure conversion in Python - [12/4]
2. What exactly is the optimization `functools.partial` is making? - [10/1]
3. How can I determine if the numbers in a list initially increase (or stay the same) and then decrease (or stay the same) with Python? - [8/3]
4. Why does Requests have a cake in __version__.py? - [8/3]
5. How to efficiently fillna(0) if series is all-nan, or else remaining non-nan entries are zero? - [7/2]
6. Get regex group with fuzziness - [7/1]
7. numpy '==' switches semantics as operands grow in size - [7/0]
8. Count number of words per row - [6/4]
9. finding interesection of intervals in pandas - [6/2]
10. How to loop in a list more times that list size in python? - [6/2]

(cxxii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-04-21 19:50:03 GMT

---

1. Why is a False value (0) smaller in bytes than True (1)? - [17/1]
2. Finding longest run in a list - [13/6]
3. Efficiently accessing arbitrarily deep dictionaries - [10/4]
4. stop python script without losing data - [10/2]
5. Elegant alternative to long exception chains? - [8/3]
6. Efficient random generator for very large range (in python) - [8/3]
7. How do I keep track of the time the CPU is used vs the GPUs for deep learning? - [8/1]
8. Can I make type aliases for type constructors in python using the typing module? - [8/1]
9. How to make "keyword-only" fields with dataclasses? - [8/1]
10. How to generate random numbers to satisfy a specific mean and median in python? - [7/4]

(cxxi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-04-15 10:01:55 GMT

---

1. How does python compute the hash of a tuple - [20/4]
2. When is a function in a standard library module called a built-in function? - [19/4]
3. Remove a single row from a csv without copying files - [17/7]
4. python function call with/without list comprehension - [11/1]
5. What do 1_000 and 100_000 mean? - [10/2]
6. Unable to install python libraries - [9/7]
7. Convert 2-tuple key in dictionary and add to a new dictionary as a dictionary value - [9/4]
8. Not able to install python packages [SSL: TLSV1_ALERT_PROTOCOL_VERSION] - [9/2]
9. Where is the value when I do this in pandas Series - [9/1]
10. Level NaN must be same as name - [8/4]

(cxx) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-04-07 20:28:34 GMT

---

1. How do I compare a Unicode string that has different bytes, but the same value? - [33/2]
2. What are the 'levels', 'keys', and names arguments for in Pandas' concat function? - [30/1]
3. Modify list and dictionary during iteration - [15/2]
4. Why is itertools.chain faster than a flattening list comprehension? - [11/1]
5. Python splitting list to sublist at start and end keyword patterns - [9/6]
6. Why is PEP-801 reserved? - [9/0]
7. DataFrame calculating by group for log return of each stock - [7/4]
8. Find/replace string between two words in text file - [7/2]
9. True and False in python can be reassgined to False and True respectively? - [7/1]
10. Why does this query give different results depending on how I arrange my DateTime arithmetic? - [7/1]

(cxix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-03-31 20:21:48 GMT

---

1. Three lists zipped into list of dicts - [16/4]
2. df.groupby(...).agg(set) produces different result compared to df.groupby(...).agg(lambda x: set(x)) - [16/2]
3. How to sum a column grouped by other columns in a list? - [12/5]
4. Remove substrings inside a list with better than O(n^2) complexity - [12/4]
5. The fastest way to exclude surrounding zeros from an array representing an image? - [10/3]
6. Using a list comprehension to look up variables works with globals() but not locals(). Why? - [10/2]
7. Python lexical analysis - logical line & compound statements - [8/3]
8. Check if pandas dataframe is subset of other dataframe - [7/3]
9. what's the equivalent method of __init__ in Perl 6? - [7/3]
10. Is this time series stationary or not? - [7/2]

(cxviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-03-25 07:41:45 GMT

---

1. Is there a difference between r and R string prefixes in Python? - [20/2]
2. Sort a list of lists by length and value in Python - [11/1]
3. Initialise a NumPy array based on its index - [10/3]
4. How does Python determine if two strings are identical - [10/2]
5. Vectorized way to count occurrences of string in either of two columns - [8/4]
6. How do I uncurry a function in Python? - [8/3]
7. Multiple sets of duplicate records from a pandas dataframe - [8/3]
8. Large Performance difference when summing ints vs floats in Cython vs NumPy - [8/1]
9. Pandas - convert Series of ints to strings - Why is apply is much faster than astype - [7/1]
10. Create new column with incremental values in a faster and efficient way - [6/4]

(cxvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-03-17 21:06:31 GMT

---

1. Does 'finally' always execute in Python? - [61/4]
2. Is it possible to "hack" python's print function? - [42/2]
3. In python, is there some kind of mapping to return the "False value" of a type? - [24/6]
4. How to efficiently find the indices of matching elements in two lists - [10/5]
5. how to print a tuple of tuples without brackets - [6/5]
6. Inverting floats in a list of lists - [6/4]
7. Why does numpy.savez() output non reproducible files? - [6/1]
8. New to Python, don't know what is wrong with my code - [5/4]
9. cant iterate nested for loop as wanted -python -maybe a simple mistake - [5/3]
10. Creating a tree without duplicates - [5/2]

(cxvi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-03-10 20:08:42 GMT

---

1. Why is the size of 2⁶³ 36 bytes, but 2⁶³-1 is only 24 bytes? - [39/2]
2. How to determine if an exception was raised once you're in the finally block? - [33/5]
3. Why does the **kwargs mapping compare equal with a differently ordered OrderedDict? - [11/4]
4. make operators overloading less redundant in python? - [10/4]
5. Install Jupyter Notebook on Miniconda - [8/2]
6. How to make a list comprehension in python with unequal sublists - [7/3]
7. Generalized __eq__() method in Python - [7/3]
8. Efficiently yield elements from large list in (pseudo) random order - [7/1]
9. How to recursively increment a binary number (in list form) without converting to integer? - [6/7]
10. Vectorized groupby with NumPy - [6/4]

(cxv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-03-04 07:37:02 GMT

---

1. How does list += 1, work in Python? - [19/2]
2. Python iterate through array while finding the mean of the top k elements - [17/15]
3. What is the root of the distinction in the meaning of equality between C++ and Python? - [15/3]
4. Sort a list of two-sided items based on the similarity of consecutive items - [11/2]
5. Python: flatten nested lists with indices - [10/3]
6. Add values in numpy array successively, without looping - [8/2]
7. Is there a way to cycle through indexes - [7/3]
8. Is it reliable and documented how PYTHONPATH populates the sys.path? - [7/1]
9. Pandas DataFrame.add() -- ignore missing columns - [6/3]
10. Euclidean distance, different results between Scipy, pure Python, and Java - [6/2]

(cxiv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-02-24 19:48:13 GMT

---

1. Perceptron learning algorithm doesn't work - [10/3]
2. How to use the IF ALL statement in Python - [8/3]
3. Perform operation on all "key":"value" pair in dict and store the result in a new dict object - [7/3]
4. Algorithm to find the most repetitive (not the most common) sequence in a string (aka tandem repeats) - [6/3]
5. Finding common list sequences - [6/2]
6. Search and Replace in pandas dataframe for large dataset - [6/2]
7. Tensorflow `tf.layers.batch_normalization` doesn't add update ops to `tf.GraphKeys.UPDATE_OPS` - [6/1]
8. Pandas - groupby columns with conditions from another column - [6/1]
9. Why Python loops over slices of numpy arrays are faster than fully vectorized operations - [6/1]
10. Module can't be found when called from outside - [6/1]

(cxiii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-02-17 20:31:55 GMT

---

1. `del` on a package has some kind of memory - [32/3]
2. Compute the cumulative sum of a list until a zero appears - [14/6]
3. Python splitting list to sublists at given start/end keywords - [13/5]
4. How/why does set() in {frozenset()} work? - [13/2]
5. How can we get the default behavior of __repr__()? - [10/3]
6. Can I access a nested dict with a list of keys? - [9/5]
7. Inferring date format versus passing a parser - [9/3]
8. convert substrings to dict - [8/6]
9. Set Python dict items recursively - [8/1]
10. Copying sublist structure to another list of equal length in Python - [7/7]

(cxii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-02-10 21:28:49 GMT

---

1. Remove combinations that contains some values before even calculated - [16/7]
2. Use variable to indicate index range - [14/2]
3. Python: pass "not" as a lambda function - [13/2]
4. How to generate sequence considering NaN in pandas - [9/4]
5. Why does chained assignment work this way? - [9/2]
6. VS Code shows an error message at print statement in python 2.7 - [8/3]
7. Python - Flatten the list of dictionaries - [8/3]
8. fractions.Fraction() returns different nom., denom. pair when parsing a float or its string representation - [8/3]
9. executing two class methods at the same time in Python - [8/2]
10. How to save numpy ndarray as .csv file? - [8/1]

(cxi) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-02-03 18:20:21 GMT

---

1. Create index dictionary from integer list - [8/4]
2. How can I use Regex to find a string of characters in alphabetical order using Python? - [7/4]
3. How to keep track of instances of python objects in a reliable way? - [7/1]
4. Converting String dictionary like to dictionary - [6/4]
5. How to get shellscript filename without $0? - [6/1]
6. Where does "\N{SPECIAL CHARACTER}" in Python come from? - [6/1]
7. Mutating a list inside a tuple in Python - [6/0]
8. Remove string characters from a given found substring until the end in Python - [5/5]
9. Matching strings in a column of a data frame with the strings in a column of another data frame using R or Python - [5/4]
10. Questions on using ttk.Style()? - [5/2]

(cx) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-01-27 21:56:12 GMT

---

1. [] = (), () = (), and {} = () 'assignments' - [28/4]
2. Fastest way to generate a random-like unique string with random length in Python 3 - [18/4]
3. Splitting names that include "de", "da", etc. into first, middle, last, etc - [14/9]
4. Why are chained operator expressions slower than their expanded equivalent? - [11/1]
5. Where are the inaccuracies in math.sqrt() and math.pow() coming from for large numbers? - [10/2]
6. Unicode subscripts and superscripts in identifiers, why does Python consider XU == Xᵘ == Xᵤ? - [9/2]
7. Style for continued multi-line f-strings - [9/1]
8. Python - Why are classes listed in the list of built-in functions? - [7/1]
9. unexpected behaviour of dictionary membership check - [6/5]
10. Pandas: check if a number appear multiple times in a row - [6/4]

(cix) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-01-20 09:38:37 GMT

---

1. What is this odd Python colon behavior doing? - [71/1]
2. Second parameter of super()? - [12/1]
3. Result of "a is a is a" comparison - [10/3]
4. Efficient way to compute the Vandermonde matrix - [9/2]
5. Pandas select columns with regex and divide by value - [8/3]
6. Treat an emoji as one character in a regex - [7/3]
7. Recursively mirroring a nested tuple in Python - [6/4]
8. How do I pass parameters with whitespaces to bash through subprocess? - [6/4]
9. Comparing numpy array with itself by element efficiently - [6/3]
10. Is it possible to open an arbitrary number of items using `with` in python? - [6/1]

(cviii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-01-14 05:01:04 GMT

---

1. Printing without parentheses varying error message using Python 3 - [21/4]
2. How do you generalise the creation of a list with many variables and conditions of `if`? - [12/4]
3. isclose function in numpy is different from math - [12/3]
4. Explode/stack a Series of strings - [8/6]
5. Do sometimes python IDLE interactive shell make a mistake? - [8/0]
6. Why is the dictionary key being converted to an inherited class type? - [7/2]
7. Pandas: Knowing when an operation affects the original dataframe - [7/0]
8. Inserting list values from a list to another in a specific order in Python - [6/6]
9. How to sort a list and handle None values properly? - [6/3]
10. Convert list of ordered dict to nested lists - [6/2]

(cvii) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2018-01-06 20:26:43 GMT

---

1. Weird behaviour of non-ASCII Python identifiers - [7/1]
2. Python multiple inheritance is not showing class variables or method of second inherited base class - [6/5]
3. How to reliably check if a domain has been registered or is available? - [6/1]
4. What's the best way to enumerate permutations of deck of cards? - [6/1]
5. Vectorization to achieve performance - [5/3]
6. Comparing dates in python, == works but <= produces error - [5/3]
7. why I don't get clean data when i use cleaned_data - [5/2]
8. Scrapy: downloader/response_count vs response_received_count - [5/1]
9. scrapy: Middleware/Pipeline single instance - [5/1]
10. Handling large numbers python 2.7(runtime error) - [5/1]

20 best Python questions at stackoverflow in 2017

These are the 20 most rated questions at 2017 Stack Overflow.
Between brackets: question score & answers count
Built date: 2018/01/01 07:58:08 GMT

---

1. What is python .. ("dot dot") notation syntax? - [174/4]
2. Why is x**4.0 faster than x**4 in Python 3? - [149/3]
3. Given a string of a million numbers, return all repeating 3 digit numbers (interview) - [131/12]
4. Why in python 0, 0 == (0, 0) equals (0, False) - [104/5]
5. Does Python optimize away a variable that's only used as a return value? - [97/2]
6. Speed up millions of regex replacements in Python 3 - [95/9]
7. Union of 2 sets does not contain all items - [91/4]
8. What is the difference between i = i + 1 and i += 1 in a 'for' loop? - [95/6]
9. Why is copying a shuffled list much slower? - [86/3]
10. Why do tuples take less space in memory than lists? - [85/4]
11. What happens when you assign the value of one variable to another variable in Python? - [69/8]
12. Why does the size of this Python String change on a failed int conversion - [68/2]
13. Is a list (potentially) divisible by another? - [66/5]
14. Understanding *x ,= lst - [64/3]
15. Why are arbitrary target expressions allowed in for-loops? - [57/4]
16. Python for loop better way - [56/3]
17. Strange use of python's 'and' operator - [55/7]
18. Increase the number of statically nested blocks - [54/3]
19. How to pivot a dataframe - [60/1]
20. Re-assigning a name to itself - [49/1]