Python AND operator on two boolean lists – how?
I have two boolean lists, e.g.,
python
What is more ‘pythonic’ for ‘not’
It is one operator, translating to one bytecode operand. The other line is really not (4 in a); two operators.
Increment Numpy array with repeated indices
I have a Numpy array and a list of indices whose values I would like to increment by one. This list may contain repeated indices, and I would like the increment to scale with the number of repeats of each index. Without repeats, the command is simple:
__getattr__ for static/class variables
I have a class like:
What could cause a python module to be imported twice?
As far as I understand, a python module is never imported twice, i.e. the code in the module only gets executed the first time it is imported. Subsequent import statements just add the module to the scope of the import.
How to limit the maximum value of a numeric field in a Django model?
Django has various numeric fields available for use in models, e.g. DecimalField and PositiveIntegerField. Although the former can be restricted to the number of decimal places stored and the overall number of characters stored, is there any way to restrict it to storing only numbers within a certain range, e.g. 0.0-5.0 ?
Copy file or directories recursively in Python
Python seems to have functions for copying files (e.g. shutil.copy) and functions for copying directories (e.g. shutil.copytree) but I haven’t found any function that handles both. Sure, it’s trivial to check whether you want to copy a file or a directory, but it seems like a strange omission.
what are all the dtypes that pandas recognizes?
For pandas, would anyone know, if any datatype apart from