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What is the use of join() in Python threading?
I was studying the python threading and came across join() .
10 Answers
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Evaluating a mathematical expression in a string
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@AnttiHaapala good example. Is it a bug in Python interpreter? Anyway, large input is trivially handled e.g., using if len(expr) > 10000: raise ValueError.
– jfs
Apr 29 '16 at 9:53
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What are “named tuples” in Python?
Reading the changes in Python 3.1 , I found something... unexpected:
11 Answers
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Using module 'subprocess' with timeout
Here's the Python code to run an arbitrary command returning its stdout data, or raise an exception on non-zero exit codes:
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How to get the position of a character in Python?
How can I get the position of a character inside a string in python?
9 Answers
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In Python, how does one catch warnings as if they were exceptions?
A third-party library (written in C) that I use in my python code is issuing warnings. I want to be able to use the try except syntax to properly handle these warnings. Is there a way to do this?
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Python ElementTree module: How to ignore the namespace of XML files to locate matching element when
...multiple namespaces and namespace aliases:
from io import StringIO # for Python 2 import from StringIO instead
import xml.etree.ElementTree as ET
# instead of ET.fromstring(xml)
it = ET.iterparse(StringIO(xml))
for _, el in it:
prefix, has_namespace, postfix = el.tag.partition('}')
if has...
Iterating over every two elements in a list
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You need a pairwise() (or grouped()) implementation.
For Python 2:
from itertools import izip
def pairwise(iterable):
"s -> (s0, s1), (s2, s3), (s4, s5), ..."
a = iter(iterable)
return izip(a, a)
for x, y in pairwise(l):
print "%d + %d = %d" % (x, y, x + y)
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Is there a standard way to list names of Python modules in a package?
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Using python2.3 and above, you could also use the pkgutil module:
>>> import pkgutil
>>> [name for _, name, _ in pkgutil.iter_modules(['testpkg'])]
['modulea', 'moduleb']
EDIT: Note that the parameter is not a ...
How to write to a file, using the logging Python module?
How can I use the logging module in Python to write to a file? Every time I try to use it, it just prints out the message.
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