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How to get current CPU and RAM usage in Python?
...getting current system status (current CPU, RAM, free disk space, etc.) in Python? Bonus points for *nix and Windows platforms.
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Format floats with standard json module
I am using the standard json module in python 2.6 to serialize a list of floats. However, I'm getting results like this:
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How do I create a constant in Python?
Is there a way to declare a constant in Python? In Java we can create constant values in this manner:
41 Answers
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How to ignore deprecation warnings in Python
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From documentation of the warnings module:
#!/usr/bin/env python -W ignore::DeprecationWarning
If you're on Windows: pass -W ignore::DeprecationWarning as an argument to Python. Better though to resolve the issue, by casting to int.
(Note that in Python 3.2, deprecation warnings ...
Does Python support short-circuiting?
Does Python support short-circuiting in boolean expressions?
3 Answers
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How do I make python wait for a pressed key?
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In Python 3 use input():
input("Press Enter to continue...")
In Python 2 use raw_input():
raw_input("Press Enter to continue...")
This only waits for the user to press enter though.
One might want to use msvcrt ((Win...
What does a b prefix before a python string mean?
In a python source code I stumbled upon I've seen a small b before a string like in:
2 Answers
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Python - 'ascii' codec can't decode byte
... you have invoked it on a string object (because you don't have the u). So python has to convert the string to a unicode object first. So it does the equivalent of
"你好".decode().encode('utf-8')
But the decode fails because the string isn't valid ascii. That's why you get a complaint about not...
How to call a Parent Class's method from Child Class in Python?
When creating a simple object hierarchy in Python, I'd like to be able to invoke methods of the parent class from a derived class. In Perl and Java, there is a keyword for this ( super ). In Perl, I might do this:
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Printing Python version in output
How can I print the version number of the current Python installation from my script?
5 Answers
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