带有‘`argparse`’的AttributeError

Question

所以我正在重写一个ZIP破解器，它是由TJ‘’Connor在Python2.7上发布的。作者使用了optparse，但我和argparse一起去了。

我的代码如下：

import argparse
from threading import Thread
import zipfile
import io

parser = argparse.ArgumentParser(description="Unzips selected .zip using a dictionary attack", usage="CRARk.py -z zipname.zip -f file.txt")

# Creates -z arg
parser.add_argument("-z", "--zip", metavar="", required=True, help="Location and the name of the .zip file.")

# Creates -f arg
parser.add_argument("-f", "--file", metavar="", required=True, help="Location and the name of the word-list/dictionary-list/password-list.")
args = parser.parse_args()


def extract_zip(zipFile, password):
    try:
        zipFile.extractall(pwd=password.encode())
        print("[+] Password for the .zip: {0}".format(password) + "\n")
    except:
        pass


def main(zip, dictionary):
    if (zip == None) | (dictionary == None):
        print(parser.usage)
        exit(0)
    zip_file = zipfile.ZipFile(zip)
    pass_file = io.open(dictionary, mode="r", encoding="utf-8")
    for line in pass_file.readlines():
        password = line.strip("\n")
        t = Thread(target=extract_zip, args=(zip_file, password))
        t.start()


if __name__ == '__main__':
    # USAGE - Project.py -z zipname.zip -f file.txt
    main(args.zip, args.dictionary)

我所犯的错误是：

Traceback (most recent call last):
  File "C:\Users\User\Documents\Jetbrains\PyCharm\Project\Project.py", line 39, in <module>
    main(args.zip, args.dictionary)
AttributeError: 'Namespace' object has no attribute 'dictionary'

现在我有点不确定那是什么意思。我尝试将args.dictionary重命名为args.file或类似的，但是当我运行代码时，它最终在我的终端上返回一个空响应。如下图所示，当我正确运行.py时，没有响应/输出等。

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我怎么才能解决这个问题？

Answer 1

使用代码中的part解析部分：

import argparse
parser = argparse.ArgumentParser(description="Unzips selected .zip using a dictionary attack", usage="CRARk.py -z zipname.zip -f file.txt")

# Creates -z arg
parser.add_argument("-z", "--zip", metavar="", required=True, help="Location and the name of the .zip file.")

# Creates -f arg
parser.add_argument("-f", "--file", metavar="", required=True, help="Location and the name of the word-list/dictionary-list/password-list.")
args = parser.parse_args()
print(args)

样本运行：

2033:~/mypy$ python3 stack54431649.py -h
usage: CRARk.py -z zipname.zip -f file.txt

Unzips selected .zip using a dictionary attack

optional arguments:
  -h, --help    show this help message and exit
  -z , --zip    Location and the name of the .zip file.
  -f , --file   Location and the name of the word-list/dictionary-
                list/password-list.
1726:~/mypy$ python3 stack54431649.py
usage: CRARk.py -z zipname.zip -f file.txt
stack54431649.py: error: the following arguments are required: -z/--zip, -f/--file
1726:~/mypy$ python3 stack54431649.py -z zippy -f afile
Namespace(file='afile', zip='zippy')

这意味着我可以使用

args.file    # 'afile'
args.zip     # 'zippy'
main(args.zip, args.file)

在main中

if zip is None:    # better than zip == None

但是，由于这两个参数是必需的，所以它们永远不会是None。

接下来的问题是，zip的值是否是有效zip文件的名称，以及是否可以打开dictionary。