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How to count the number of true elements in a NumPy bool array
... count the number of elements whose values are True . Is there a NumPy or Python routine dedicated for this task? Or, do I need to iterate over the elements in my script?
...
Replace values in list using Python [duplicate]
...ate(items):
if not (item % 2):
items[index] = None
Here are (Python 3.6.3) timings demonstrating the non-timesave:
In [1]: %%timeit
...: items = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
...: for index, item in enumerate(items):
...: if not (item % 2):
...: items[inde...
Relative imports in Python 3
...
myothermodule.py
...with a mymodule.py like this...
#!/usr/bin/env python3
# Exported function
def as_int(a):
return int(a)
# Test function for module
def _test():
assert as_int('1') == 1
if __name__ == '__main__':
_test()
...a myothermodule.py like this...
#!/usr/bin/env...
Python name mangling
...rage.append(value)
This is for sure a controversial way of doing things. Python newbies just hate it and even some old Python guys despise this default - but it is the default anyway, so I really recommend you to follow it, even if you feel uncomfortable.
If you really want to send the message "C...
Android Studio: Default project directory
...dio.
You can also edit ~/.AndroidStudioPreview/config/options/ide.general.xml (in linux) and change the line that reads <option name="lastProjectLocation" value="$USER_HOME$/AndroidStudioProjects" /> to <option name="lastProjectLocation" value="$USER_HOME$/Projects/AndroidStudio" />, bu...
Locking a file in Python
I need to lock a file for writing in Python. It will be accessed from multiple Python processes at once. I have found some solutions online, but most fail for my purposes as they are often only Unix based or Windows based.
...
How to retrieve a module's path?
...th"][0], but I'm not sure if it's portable or if it doesn't differ between python versions either. It's working for me, unlike this answer which gives me the same error and inspect answer raises TypeError: <module 'module' (namespace)> is a built-in module...
– Jezor
...
Benchmarking (python vs. c++ using BLAS) and (numpy)
...ect that the result would show such a huge discrepancy between the c++ and python approach? Both are using shared objects for their calculations.
No.
Since I would rather use python for my program, what could I do to increase the performance when calling BLAS or LAPACK routines?
Make sure th...
Is it possible to make abstract classes in Python?
How can I make a class or method abstract in Python?
12 Answers
12
...
background function in Python
I've got a Python script that sometimes displays images to the user. The images can, at times, be quite large, and they are reused often. Displaying them is not critical, but displaying the message associated with them is. I've got a function that downloads the image needed and saves it locally. Rig...