如何通过python3删除以函数开头的行

Question

I want to delete a line in 50,000 wikipages. Because that line is a dead external web page link. For example, have a look at this wiki page. The line consists of two parts. one is starting text another is the URL. THe URL varies for each and every word but the text always starts with '*தமிழ் இணையப் பல்கலைக்கழக அகரமுதலியில் '. How can i delete the line which starts with fuction?

Sample code :

#!/usr/bin/env python
#-*- coding: utf-8 -*-
wikiPage = '''==உசாத்துணை== 
* தமிழ் இணையப் பல்கலைக்கழக அகரமுதலியில்  [http://www.tamilvu.org/slet/servlet/o33.o33searh?CboSelect=1&TxtSearch=abdominal+muscle&OptSearch=&id=All abdominal muscle]'''

# part1 is a line of  'starts with'
part1 = '* தமிழ் இணையப் பல்கலைக்கழக அகரமுதலியில் '
part2 = '[http://www.tamilvu.org/slet/servlet/o33.o33searh?CboSelect=1&TxtSearch=abdominal+muscle&OptSearch=&id=All abdominal muscle]'
print(wikiPage.replace('part1',''))

How to delete part2 too? Please note that part2 is a url which differs fro every wiki page.

Answer 1

Create a new list (or however you store lines) of lines, then iterate through the old list, and only add lines that don't start with that string.

START_OF_LINE = "*தமிழ் இணையப் பல்கலைக்கழக அகரமுதலியில்"
new_lines = [] # or however you store lines

for line in lines:
    if line.startswith(START_OF_LINE):
        pass
    else:
        new_lines.append(line)

Answer 2

s_line = '*தமிழ் இணையப் பல்கலைக்கழக அகரமுதலியில்'

lines = [line for line in lines if not line.startswith(s_line)]