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Accessing the index in 'for' loops?
...h you would normally use in languages such as C or PHP), is considered non-pythonic.
The better option is to use the built-in function enumerate(), available in both Python 2 and 3:
for idx, val in enumerate(ints):
print(idx, val)
Check out PEP 279 for more.
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How to know if an object has an attribute in Python
Is there a way in Python to determine if an object has some attribute? For example:
14 Answers
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Python way of printing: with 'format' or percent form? [duplicate]
In Python there seem to be two different ways of generating formatted output:
4 Answers
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Purpose of Python's __repr__
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Omitted the reference: docs.python.org/reference/datamodel.html#object.__repr__
– S.Lott
Dec 31 '09 at 11:19
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What does the “at” (@) symbol do in Python?
I'm looking at some Python code which used the @ symbol, but I have no idea what it does. I also do not know what to search for as searching Python docs or Google does not return relevant results when the @ symbol is included.
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Does Python support multithreading? Can it speed up execution time?
I'm slightly confused about whether multithreading works in Python or not.
3 Answers
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Accessing class variables from a list comprehension in the class definition
... a list comprehension within the class definition? The following works in Python 2 but fails in Python 3:
5 Answers
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Loop backwards using indices in Python?
I am trying to loop from 100 to 0. How do I do this in Python?
15 Answers
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UnicodeDecodeError when reading CSV file in Pandas with Python
...use one of several alias options like 'latin' instead of 'ISO-8859-1' (see python docs, also for numerous other encodings you may encounter).
See relevant Pandas documentation,
python docs examples on csv files, and plenty of related questions here on SO. A good background resource is What every de...
not None test in Python [duplicate]
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if val is not None:
# ...
is the Pythonic idiom for testing that a variable is not set to None. This idiom has particular uses in the case of declaring keyword functions with default parameters. is tests identity in Python. Because there is one and only one ...