NameError: name ‘write’ is not defined
改为
f_new.write(line)
正确
完整代码
import os
f = open("1.txt", "r", encoding="utf-8")
f_new = open("2.txt", "w", encoding="utf-8")
find_str = "\'"
replace_str = "\""
for line in f:
if find_str in line:
line = line.replace(find_str, replace_str)
f_new.write(line)
f.close()
f_new.close()
os.remove("1.txt")
os.rename("2.txt", "1.txt")