大约有 11,000 项符合查询结果（耗时：0.0239秒） [XML]
Why does Python use 'magic methods'?
I've been playing around with Python recently, and one thing I'm finding a bit odd is the extensive use of 'magic methods', e.g. to make its length available, an object implements a method, def __len__(self) , and then it is called when you write len(obj) .
...
How to replace a character by a newline in Vim
...r foo:
\r == "carriage return" (CR / ^M)
\n == matches "line feed" (LF) on Linux/Mac, and CRLF on Windows
For bar:
\r == produces LF on Linux/Mac, CRLF on Windows
\n == "null byte" (NUL / ^@)
When editing files in linux (i.e. on a webserver) that were initially created in a windows environment and u...
Linux: compute a single hash for a given folder & contents?
...m
A snippet of human friendly output:
...
... //clipped
...
/home/lab/linux-4.14-rc8/CREDITS
Base name : CREDITS
Level : 1
Type : regular file
Referent name :
File size ...
How to check if type of a variable is string?
Is there a way to check if the type of a variable in python is a string , like:
20 Answers
...
What kinds of patterns could I enforce on the code to make it easier to translate to another program
...gramming language to another. The languages I am starting with are PHP and Python (Python to PHP should be easier to start with), but ideally I would be able to add other languages with (relative) ease. The plan is:
...
What is the theoretical maximum number of open TCP connections that a modern Linux box can have
Assuming infinite performance from hardware, can a Linux box support >65536 open TCP connections?
3 Answers
...
Python's many ways of string formatting — are the older ones (going to be) deprecated?
Python has at least six ways of formatting a string:
5 Answers
5
...
Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
...lot about the PyPy project. They claim it is 6.3 times faster than the CPython interpreter on their site .
12 Answers
...
How do I lowercase a string in Python?
...
How to convert string to lowercase in Python?
Is there any way to convert an entire user inputted string from uppercase, or even part uppercase to lowercase?
E.g. Kilometers --> kilometers
The canonical Pythonic way of doing this is
>>> 'Kilometers'....
How to check if variable is string with python 2 and 3 compatibility
I'm aware that I can use: isinstance(x, str) in python-3.x but I need to check if something is a string in python-2.x as well. Will isinstance(x, str) work as expected in python-2.x? Or will I need to check the version and use isinstance(x, basestr) ?
...