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Is there a ceiling equivalent of // operator in Python?
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You can always just do it inline as well
((foo - 1) // bar) + 1
In python3, this is just shy of an order of magnitude faster than forcing the float division and calling ceil(), provided you care about the speed. Which you shouldn't, unless you've proven through usage that you need to.
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How to print without newline or space?
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Use the python3-style print function for python2.6+ (will also break any existing keyworded print statements in the same file.)
# for python2 to use the print() function, removing the print keyword
from __future__ import print_fun...
How can I remove non-ASCII characters but leave periods and spaces using Python?
...ignore')
>>>print s
Good bye in Swedish is Hej d
Edit:
Python3: str -> bytes -> str
>>>"Hej då".encode("ascii", errors="ignore").decode()
'hej d'
Python2: unicode -> str -> unicode
>>> u"hej då".encode("ascii", errors="ignore").decode()
u'hej d...
Convert nested Python dict to object?
...pes of serialization well, and is maintained. Great, thank you. I wish the python3 version was named the same thing, buecause why not.
– Jonathan
Feb 9 '15 at 20:30
4
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How to assign a Git SHA1's to a file without Git?
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Full Python3 implementation:
import os
from hashlib import sha1
def hashfile(filepath):
filesize_bytes = os.path.getsize(filepath)
s = sha1()
s.update(b"blob %u\0" % filesize_bytes)
with open(filepath, 'rb') as...
为什么你越努力，却越焦虑？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...者没看过的网络小说，真的是从天亮一下子能看到天黑；下载了很多美剧开始翻来覆去的看；开始接触知乎……
在这种状况下，人的生活节奏和习惯也随之发生巨大的变化——也不愿意像以前那样去厨房做饭了，因为可能会...
Python: try statement in a single line
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In python3 you can use contextlib.suppress:
from contextlib import suppress
d = {}
with suppress(KeyError): d['foo']
share
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Create an empty list in python with certain size
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Note that in Python3 you'll have to use list(range(n)) instead, as range() doesn't return a list but is an iterator, and that isn't faster than [None] * n.
– Skillmon likes topanswers.xyz
Feb 7 at 21...
How to search and replace text in a file?
...ace editing. It redirects stdout to the file in this case:
#!/usr/bin/env python3
import fileinput
with fileinput.FileInput(filename, inplace=True, backup='.bak') as file:
for line in file:
print(line.replace(text_to_search, replacement_text), end='')
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PyLint “Unable to import” error - how to set PYTHONPATH?
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[Master]
init-hook='sys.path = ["/path/myapps/bin/", "/path/to/myapps/lib/python3.3/site-packages/", ... many paths here])'
or
[Master]
init-hook='sys.path = list(); sys.path.append("/path/to/foo")'
.. and
pylint --rcfile /path/to/pylintrc /path/to/module.py
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