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How do I get Flask to run on port 80?
...e will give the same permission error unless sudo is used to run it:
sudo python3 app.py
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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
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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...
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']
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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...
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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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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Asynchronous method call in Python?
...e and this should be the accepted answer now. When you talk about async in python3.5+ what comes to mind should be asyncio and async keyword.
– zeh
Jun 22 at 1:34
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