大约有 5,685 项符合查询结果（耗时：0.0188秒） [XML]
What's the difference between lists and tuples?
...tial advantages.
There are some interesting articles on this issue, e.g. "Python Tuples are Not Just Constant Lists" or "Understanding tuples vs. lists in Python". The official Python documentation also mentions this
"Tuples are immutable, and usually contain an heterogeneous sequence ...".
I...
Changing user agent on urllib2.urlopen
...
Setting the User-Agent from everyone's favorite Dive Into Python.
The short story: You can use Request.add_header to do this.
You can also pass the headers as a dictionary when creating the Request itself, as the docs note:
headers should be a dictionary, and will be treated a...
How to duplicate sys.stdout to a log file?
...my question to also ask: What is the best way to accomplish logging when a python app is making a lot of system calls?
17 A...
How to generate random number with the specific length in python
...an just do it as a oneliner:
'{:03}'.format(random.randrange(1, 10**3))
python 3.6+ only oneliner:
f'{random.randrange(1, 10**3):03}'
Example outputs of the above are:
'026'
'255'
'512'
Implemented as a function:
import random
def n_len_rand(len_, floor=1):
top = 10**len_
if flo...
Skip the headers when editing a csv file using Python
I am using below referred code to edit a csv using Python. Functions called in the code form upper part of the code.
3 Ans...
python: SyntaxError: EOL while scanning string literal
...ut eight lines with " \" at the very end, was missing a " \" on one line.
Python IDLE didn't specify a line number that this error was on, but it red-highlighted a totally correct variable assignment statement, throwing me off. The actual misshapen string statement (multiple lines long with " \") ...
Confused by python file mode “w+”
...
@NasifImtiazOhi - The Python docs say that w+ will "overwrite the existing file if the file exists". So as soon as you open a file with w+, it is now an empty file: it contains 0 bytes. If it used to contain data, that data has been truncated — ...
How to read and write INI file with Python3?
I need to read, write and create an INI file with Python3.
6 Answers
6
...
Kill process by name?
...
Above works on .nix, but is not pythonic. The appro way, as posted below, is to use the os.system('taskkill /f /im exampleProcess.exe') approach, which is part of core python.
– Jonesome Reinstate Monica
Feb 13 '15 at ...
Can Python test the membership of multiple values in a list?
...ssion 'a','b' in ['b', 'a', 'foo', 'bar'] doesn't work as expected because Python interprets it as a tuple:
>>> 'a', 'b'
('a', 'b')
>>> 'a', 5 + 2
('a', 7)
>>> 'a', 'x' in 'xerxes'
('a', True)
Other Options
There are other ways to execute this test, but they won't work...