我想写一个文件,然后通过在文件的开头和结尾插入一些其他内容来修改它。如何在文本文件的开头插入内容?
我的代码:
f = open('Blowing in the wind.txt', 'w+')
f.seek(0)
f.truncate()
f.write('''
How many roads must a man walk down
Before they call him a man
How many seas must a white dove sail
Before she sleeps in the sand
''')
content= f.read()
f.seek(0)
f.write('Blowing in the wind\n' + 'Bob\n'+content)
f.seek(0,2)
f.write('\n1962 by Warner Bros.Inc.')
f.seek(0,0)
txt= f.read()
print(txt)
结果:
Blowing in the wind
Bob
n walk down
Before they call him a man
How many seas must a white dove sail
Before she sleeps in the sand
1962 by Warner Bros.Inc.
如何防止覆盖原始文本的第一行添加的内容?
检查此[post](https://stackoverflow.com/questions/5914627/prepend-line-to-beginning-of-a-file) – PRMoureu