大约有 30,000 项符合查询结果(耗时:0.0581秒) [XML]
How can I find the current OS in Python? [duplicate]
As the title says, how can I find the current operating system in python?
5 Answers
5
...
Best way to replace multiple characters in a string?
...= text.replace('&', r'\&').replace('#', r'\#')
Timed like this:
python -mtimeit -s"import time_functions" "time_functions.a('abc&def#ghi')"
python -mtimeit -s"import time_functions" "time_functions.b('abc&def#ghi')"
python -mtimeit -s"import time_functions" "time_functions.c('abc&...
Why use pip over easy_install? [closed]
...u can pip install ., pip install git+https://.
pip comes with the official Python 2.7 and 3.4+ packages from python.org, and a pip bootstrap is included by default if you build from source.
The various incomplete bits of documentation on installing, using, and building packages have been replaced by...
correct way to define class variables in Python [duplicate]
I noticed that in Python, people initialize their class attributes in two different ways.
2 Answers
...
Python regular expressions return true/false
Using Python regular expressions how can you get a True / False returned? All Python returns is:
6 Answers
...
Convert SVG image to PNG with PHP
...();
the steps regex color replacement may vary depending on the svg path xml and how you id & color values are stored. If you don't want to store a file on the server, you can output the image as base 64 like
<?php echo '<img src="data:image/jpg;base64,' . base64_encode($im) . '" />...
Looping over a list in Python
...n(x)==3:
... print x
...
[1, 2, 3]
[8, 9, 10]
or if you need more pythonic use list-comprehensions
>>> [x for x in mylist if len(x)==3]
[[1, 2, 3], [8, 9, 10]]
>>>
share
|
...
How do you split a list into evenly sized chunks?
...2, 63, 64, 65, 66, 67, 68, 69],
[70, 71, 72, 73, 74]]
If you're using Python 2, you should use xrange() instead of range():
def chunks(lst, n):
"""Yield successive n-sized chunks from lst."""
for i in xrange(0, len(lst), n):
yield lst[i:i + n]
Also you can simply use list c...
Python: finding an element in a list [duplicate]
What is a good way to find the index of an element in a list in Python?
Note that the list may not be sorted.
10 Answers
...
Understanding repr( ) function in Python
...can "eval()"
it, meaning it is a string representation that evaluates to a Python
object)
5 Answers
...
