“str”对象不可调用错误

Question

如何修复下面代码中的运行时错误？

#!/usr/bin/env python3
import zipfile
def extract(zipf, pwd):
    try:
        zipf.extractall(psw=(pwd))
        return
    except :
        return
def main():
    zipf = zipfile.is_zipfile("dave.zip")
    pwdfile=open("pwdlist.txt", "r")
    for line in pwdfile.readlines():
        psw = line.strip()("\n")
        guess = extract(zipf, psw)
        if guess:
            print ("[+] Password is : %s"%(psw) + ("\n"))
            exit(0)
if __name__ == '__main__':
    main()

错误：

psw = line.strip()("\n") TypeError: 'str' object is not callable

Answer 1

变化：

psw = line.strip()("\n") 

到

psw = line.strip("\n")

注意，line.strip() 返回一个字符串，然后您尝试调用它，所以它类似于：

>>> "I'm a string"()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'str' object is not callable

或许更清楚：

>>> string_object = "I'm a string"
>>> string_object()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'str' object is not callable

Answer 2

line.split() 是一个返回字符串的函数调用。然后，您尝试将该字符串 作为函数调用，参数为“\n”。

如果你想在换行符处拆分，你需要

line.split("\n")