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Flatten an irregular list of lists
... your example a little easier to read and probably boost the performance.
Python 2
def flatten(l):
for el in l:
if isinstance(el, collections.Iterable) and not isinstance(el, basestring):
for sub in flatten(el):
yield sub
else:
yield el
...
Usage of sys.stdout.flush() method
...
Python's standard out is buffered (meaning that it collects some of the data "written" to standard out before it writes it to the terminal). Calling sys.stdout.flush() forces it to "flush" the buffer, meaning that it will wri...
multiprocessing: How do I share a dict among multiple processes?
...art()
p2.start()
p1.join()
p2.join()
print d
Output:
$ python mul.py
{1: '111', '2': 6}
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How do I use Django templates without the rest of Django?
I want to use the Django template engine in my (Python) code, but I'm not building a Django-based web site. How do I use it without having a settings.py file (and others) and having to set the DJANGO_SETTINGS_MODULE environment variable?
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Django 1.7 - makemigrations not detecting changes
... need to do one pre-step (as I found out) listed in the documentation:
python manage.py makemigrations your_app_label
The documentation does not make it obvious that you need to add the app label to the command, as the first thing it tells you to do is python manage.py makemigrations which wil...
How to write very long string that conforms with PEP8 and prevent E501
As PEP8 suggests keeping below the 80 column rule for your python program, how can I abide to that with long strings, i.e.
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Read Excel File in Python
...dings:")
print(DataF.columns)
Test at :https://repl.it
Reference: https://pythonspot.com/read-excel-with-pandas/
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How to install packages using pip according to the requirements.txt file from a local directory?
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i tried this python -m pip install -r requirements.txt when inside the activated venv enviroment. things installed smoothly but when i do pip list it does not show that packages, when I am in the active venv or even after deactivate venv....
Split Python Flask app into multiple files
...st-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f15231359%2fsplit-python-flask-app-into-multiple-files%23new-answer', 'question_page');
}
);
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Is it possible to set a number to NaN or infinity?
Is it possible to set an element of an array to NaN in Python?
4 Answers
4
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