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Is there a difference between using a dict literal and a dict constructor?
... 'c':3, 'd':4, 'e':5}"
1000000 loops, best of 3: 0.479 usec per loop
> python3.2 -m timeit "d = dict(a=1, b=2, c=3, d=4, e=5)"
1000000 loops, best of 3: 0.975 usec per loop
> python3.2 -m timeit "d = {'a':1, 'b':2, 'c':3, 'd':4, 'e':5}"
1000000 loops, best of 3: 0.409 usec per loop
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mysql_config not found when installing mysqldb python interface
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if use python3.x, tried with apt-get install python3-dev.
– Legolas Bloom
Sep 29 '16 at 1:59
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“Cross origin requests are only supported for HTTP.” error when loading a local file
...ation.
Python 3
Do the same steps, but use the following command instead python3 -m http.server
Node.js
Alternatively, if you demand a more responsive setup and already use nodejs...
Install http-server by typing npm install -g http-server
Change into your working directory, where yoursome.htm...
What's the bad magic number error?
...
Loading a python3 generated *.pyc file with python2 also causes this error.
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fol...
Access data in package subdirectory
... last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.7/importlib/resources.py", line 87, in open_binary
resource = _normalize_path(resource)
File "/usr/lib/python3.7/importlib/resources.py", line 61, in _normalize_path
raise ValueError('{!r} must be only a fil...
Calculating a directory's size using Python?
...e print in the last line, it will work for current versions of python2 and python3:
du.py
-----
#!/usr/bin/python3
import subprocess
def du(path):
"""disk usage in human readable format (e.g. '2,1GB')"""
return subprocess.check_output(['du','-sh', path]).split()[0].decode('utf-8')
if __n...
How do I pass a string into subprocess.Popen (using the stdin argument)?
... exit status, and its output as a string back in one call:
#!/usr/bin/env python3
from subprocess import run, PIPE
p = run(['grep', 'f'], stdout=PIPE,
input='one\ntwo\nthree\nfour\nfive\nsix\n', encoding='ascii')
print(p.returncode)
# -> 0
print(p.stdout)
# -> four
# -> five
# -&g...
How to make a cross-module variable?
... these answers. Also note that __builtin__ has been renamed to builtins in python3.
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pypi UserWarning: Unknown distribution option: 'install_requires'
... apt-get install python-dev # for python2.x installs
sudo apt-get install python3-dev # for python3.x installs
It will install any missing headers. It solved my issue
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How do I get time of a Python program's execution?
...erbose output,
$ time -v python yourprogram.py
Command being timed: "python3 yourprogram.py"
User time (seconds): 0.08
System time (seconds): 0.02
Percent of CPU this job got: 98%
Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.10
Average shared text size (kbytes): 0
...