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How do I determine if my python shell is executing in 32bit or 64bit?
...
so copy-paste oneliner for Python3: python -c "import struct; print(struct.calcsize('P')*8)"
– Neinstein
Jul 2 '19 at 13:38
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How to urlencode a querystring in Python?
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python3 -c "import urllib.parse, sys; print(urllib.parse.quote_plus(sys.argv[1])) "string to encode" for a one liner on the command line
– Amos Joshua
May 8 '19 at 12:19
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Saving a Numpy array as an image
...rite_png(buf, width, height):
""" buf: must be bytes or a bytearray in Python3.x,
a regular string in Python2.x.
"""
import zlib, struct
# reverse the vertical line order and add null bytes at the start
width_byte_4 = width * 4
raw_data = b''.join(
b'\x00' + ...
How to make an unaware datetime timezone aware in python
...Fewer dependencies and no pytz issues.
NOTE: If you wish to use this with python3 and python2, you can use this as well for the timezone import (hardcoded for UTC):
try:
from datetime import timezone
utc = timezone.utc
except ImportError:
#Hi there python2 user
class UTC(tzinfo):
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Getting MAC Address
... getHwAddr('eth0')
This is the Python 3 compatible code:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import fcntl
import socket
import struct
def getHwAddr(ifname):
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
info = fcntl.ioctl(s.fileno(), 0x8927, struct.pack('256s', bytes...
What is a Python equivalent of PHP's var_dump()? [duplicate]
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Note: For python3 you'll need to use parens like print( vars(foo) )
– Armstrongest
Apr 3 '19 at 3:23
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UnicodeDecodeError: 'utf8' codec can't decode byte 0x9c
...above worked for me.
http://python-notes.curiousefficiency.org/en/latest/python3/text_file_processing.html
In short, to make Python 3 behave as similarly as possible to Python 2 use:
with open(filename, encoding="latin-1") as datafile:
# work on datafile here
However, read the article, the...
Concatenating two lists - difference between '+=' and extend()
... That's right. But at least you can use nonlocal l statement in boo in Python3.
– monitorius
Jul 2 '15 at 9:58
com...
How do I format a string using a dictionary in python-3.x?
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I would say that use of the f-string is more aligned to python3 approach.
– Jonatas CD
May 25 '18 at 12:00
2
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How to find the mime type of a file in python?
...a different name:
pip3 install --user python-magic
# or:
sudo apt install python3-magic # Ubuntu distro package
The code can be simplified as well:
>>> import magic
>>> magic.from_file('/tmp/img_3304.jpg', mime=True)
'image/jpeg'
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