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What are metaclasses in Python?

In Python, what are metaclasses and what do we use them for? 22 Answers 22 ...
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What is the difference between old style and new style classes in Python?

What is the difference between old style and new style classes in Python? When should I use one or the other? 8 Answers ...
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pypi UserWarning: Unknown distribution option: 'install_requires'

Does anybody encounter this warning when executing python setup.py install of a PyPI package? 10 Answers ...
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What does -> mean in Python function definitions?

I've recently noticed something interesting when looking at Python 3.3 grammar specification : 7 Answers ...
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How to turn on line numbers in IDLE?

...wise there are a bunch of other IDEs some of which are free: https://wiki.python.org/moin/IntegratedDevelopmentEnvironments share | improve this answer | follow ...
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Installing specific package versions with pip

I'm trying to install version 1.2.2 of the MySQL_python adaptor, using a fresh virtualenv created with the --no-site-packages option. The current version shown in PyPi is 1.2.3 . Is there a way to install the older version? I found an article stating that this should do it: ...
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Image library for Python 3

What is python-3 using instead of PIL for manipulating Images? 8 Answers 8 ...
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Validating with an XML schema in Python

...e to validate that my XML file adheres to the schema. How do I do this in Python? 7 Answers ...
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Use 'import module' or 'from module import'?

...est to use import module or from module import . I've just started with Python and I'm trying to start off with best practices in mind. ...
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Add params to given URL in Python

...: try: import urlparse from urllib import urlencode except: # For Python 3 import urllib.parse as urlparse from urllib.parse import urlencode url = "http://stackoverflow.com/search?q=question" params = {'lang':'en','tag':'python'} url_parts = list(urlparse.urlparse(url)) query = d...