Tutorial-Python tutorial

This article describes how to use Python to implement the script for line break conversion. the code is very simple, including the implementation of the operation description function. if you need it, you can refer to a very simple one, line breaks in '\ n',' \ r \ n', and '\ r' 3 are converted.
Usage

The code is as follows:

Usage: eol_convert.py [-h] [-r] [-m {u, p, w, m, d}] [-k] [-f]
Filename [filename...]

Convert Line Ending

Positional arguments:
Filename file names

Optional arguments:
-H, -- help show this help message and exit
-R walk through directory
-M {u, p, w, m, d} mode of the line ending
-K keep output file date
-F force conversion of binary files

Source code

This is only a simple exercise for argparse and OS modules, such as utime (), stat (), and walk. It can be used, but it is still quite imperfect.

 #!/usr/bin/env python   #2009-2011 dbzhang800   import os   import re   import os.path      def convert_line_endings(temp, mode):     if mode in ['u', 'p']: #unix, posix       temp = temp.replace('\r\n', '\n')       temp = temp.replace('\r', '\n')     elif mode == 'm':   #mac (before Mac OS 9)       temp = temp.replace('\r\n', '\r')       temp = temp.replace('\n', '\r')     elif mode == 'w':   #windows       temp = re.sub("\r(?!\n)|(?