擅长:python、mysql、java
<p>这是完成这项任务的一种方法</p>
<pre><code>infile = open('infile.txt','r')
outfile = open('outfile.txt', 'w+')
line_number = 0
for line in infile.readlines():
outfile.write(f'{line_number} {line}')
line_number += 1
# infile text
# line 0
# line 1
# line 2
# line 3
# line 4
# line 5
# outfile text
# 0 line 0
# 1 line 1
# 2 line 2
# 3 line 3
# 4 line 4
# 5 line 5
</code></pre>