如何通过python删除文本文件中的所有字符

Question

I have a text file namefile.txt which has more character. I want to delete all text and keep the file in order to see nothings when we open namefile.txt after run the python script?

Answer 1

This will do it. Opening a file with write permission conceptually clears previous data.

open('namefile.txt', 'w').close()

Answer 2

Simply open the file in write mode and close it

f = open('myfile.dat', 'w')
f.close()

Answer 3

如果要保持文件打开，也可以调用：file.truncate（）