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Write to UTF-8 file in Python
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Read the following: http://docs.python.org/library/codecs.html#module-encodings.utf_8_sig
Do this
with codecs.open("test_output", "w", "utf-8-sig") as temp:
temp.write("hi mom\n")
temp.write(u"This has ♭")
The resulting file is UTF-8 with the...
Specify format for input arguments argparse python
I have a python script that requires some command line inputs and I am using argparse for parsing them. I found the documentation a bit confusing and couldn't find a way to check for a format in the input parameters. What I mean by checking format is explained with this example script:
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What version of Visual Studio is Python on my computer compiled with?
...rying to find out the version of Visual Studio that is used to compile the Python on my computer
2 Answers
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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
10
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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
9
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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
11
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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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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)
O...