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Accessing items in an collections.OrderedDict by index
...ctions
>>> d = collections.OrderedDict()
>>> d['foo'] = 'python'
>>> d['bar'] = 'spam'
>>> d.items()
[('foo', 'python'), ('bar', 'spam')]
>>> d.items()[0]
('foo', 'python')
>>> d.items()[1]
('bar', 'spam')
Note for Python 3.X
dict.items would ...
Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
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If you have several versions of Python installed, /usr/bin/env will ensure the interpreter used is the first one on your environment's $PATH. The alternative would be to hardcode something like #!/usr/bin/python; that's ok, but less flexible.
In Unix, an e...
Python 3 turn range to a list
...ing to write/read, so I'm attempting to make a list with a range in it. In Python 2 it seems that:
8 Answers
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List comprehension vs map
...? Is either of them generally more efficient or considered generally more pythonic than the other?
11 Answers
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Converting RGB to grayscale/intensity
.../20160303201512/http://www.cis.rit.edu/mcsl/research/broadbent/CIE1931_RGB.pdf
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Threading in a PyQt application: Use Qt threads or Python threads?
...nchrnous signals/slots, event loop, etc.).
Also, you can't use Qt from a Python thread (you can't for instance
post event to the main thread through QApplication.postEvent): you
need a QThread for that to work.
A general rule of thumb might be to use QThreads if you're going to interact s...
How to test if a string is JSON or not?
...h paragraphs of ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf
– Onur Yıldırım
Apr 19 '19 at 0:38
j...
How do I check what version of Python is running my script?
How can I check what version of the Python Interpreter is interpreting my script?
21 Answers
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Is Python interpreted, or compiled, or both?
... there are C interpreters and projects that attempt to compile a subset of Python to C or C++ code (and subsequently to machine code).
Second, compilation is not restricted to ahead-of-time compilation to native machine code. A compiler is, more generally, a program that converts a program in one p...
How do I find the location of Python module sources?
How do I learn where the source file for a given Python module is installed? Is the method different on Windows than on Linux?
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