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How to generate all permutations of a list?
How do you generate all the permutations of a list in Python, independently of the type of elements in that list?
33 Answer...
How do I parse a string to a float or int?
In Python, how can I parse a numeric string like "545.2222" to its corresponding float value, 545.2222 ? Or parse the string "31" to an integer, 31 ?
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What is the difference between re.search and re.match?
...t is the difference between the search() and match() functions in the Python re module ?
8 Answers
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Adding information to an exception?
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raise IOError('Stuff')
IOError: Stuff happens at arg1
Update 2
For Python 3.x, the code in my first update is syntactically incorrect plus the idea of having a message attribute on BaseException was retracted in a change to PEP 352 on 2012-05-16 (my first update was posted on 2012-03-12). So...
log messages appearing twice with Python Logging
I'm using Python logging, and for some reason, all of my messages are appearing twice.
8 Answers
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Pythonic way to add datetime.date and datetime.time objects
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It's in the python docs.
import datetime
datetime.datetime.combine(datetime.date(2011, 1, 1),
datetime.time(10, 23))
returns
datetime.datetime(2011, 1, 1, 10, 23)
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In Python, how to display current time in readable format
...-0400. %Z gives you current timezone name (or abbreviation) automatically. Python doesn't support %l, you could use %I instead.
– jfs
Dec 14 '13 at 19:30
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What is the __del__ method, How to call it?
...r the function ends. In particular, unless there are circular references, CPython (the standard Python implementation) will garbage collect immediately.
However, this is an implementation detail of CPython. The only required property of Python garbage collection is that it happens after all refere...
How can I shuffle the lines of a text file on the Unix command line or in a shell script?
...huf() { perl -MList::Util=shuffle -e 'print shuffle(<>);' "$@"; }
Python-based function, adapted from scai's answer:
shuf() { python -c '
import sys, random, fileinput; from signal import signal, SIGPIPE, SIG_DFL;
signal(SIGPIPE, SIG_DFL); lines=[line for line in fileinput.input()]; ...
Python Dictionary to URL Parameters
I am trying to convert a Python dictionary to a string for use as URL parameters. I am sure that there is a better, more Pythonic way of doing this. What is it?
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