Element-wise string concatenation in numpy
Is this a bug?
Python
Why is one class variable not defined in list comprehension but another is?
I just read the answer to this question: Accessing class variables from a list comprehension in the class definition
How Python assign multiple variables at one line works?
What are the steps that Python actually does to assign multiple variables at one line?
pandas groupby to nested json
I often use pandas groupby to generate stacked tables. But then I often want to output the resulting nested relations to json. Is there any way to extract a nested json filed from the stacked table it produces?
Python: read all text file lines in loop
I want to read huge text file line by line (and stop if a line with “str” found).
How to check, if file-end is reached?
Unable to install Python libraries
I am not able to install any Python libraries. I am using pip 9.0.1 and python 2.7. I am getting the following error:
TypeError: __array__() takes 1 positional argument but 2 were given (Image classification Keras)
How to troubleshoot this? I’ve tried setting dtype=None in the image.img_to_array method.
Converting a loop with an assignment into a comprehension
Converting a loop into a comprehension is simple enough: mylist = [] for word in ['Hello', 'world']: mylist.append(word.split('l')[0]) to mylist = [word.split('l')[0] for word in ['Hello', 'world']] But I’m not sure how to proceed when the loop involves assigning a value to a reference. mylist = [] for word in ['Hello', 'world']: split_word = word.split('l') … Read more
Delete final line in file with python
How can one delete the very last line of a file with python?
what is the difference for python between lambda and regular function?
I’m curious about the difference between lambda function and a regular function (defined with def) – in the python level. (I know what is the difference for programmers and when to use each one.)