Getting “TypeError: pwd: expected bytes, got str” when extracting zip file with password

问题

I want to unzip a specific named file located in a specific directory.

The name of the file = happy.zip.
The location = C:/Users/desktop/Downloads.

I want to extract all the files to C:/Users/desktop/Downloads(the same location)

I tried:

import zipfile
import os
in_Zip = r"C:/Users/desktop/Downloads/happy.zip"
outDir = r"C:/Users/desktop/Downloads"
z = zipfile.ZipFile(in_Zip, 'r')
z.extractall(outDir, pwd='1234!')
z.close

But I got:

"TypeError: pwd: expected bytes, got str"

回答1:

In Python 2: '1234!' = byte string

In Python 3: '1234!' = unicode string

Assuming you are using Python 3, you need to either use b'1234!' or encode the string to get byte string using str.encode() this is useful if you have the password saved as a string passwd = '1234!' then you can use:

z.extractall(outDir, pwd=passwd.encode())

or use byte string directly:

z.extractall(outDir, pwd=b'1234!')

来源：https://stackoverflow.com/questions/46266555/getting-typeerror-pwd-expected-bytes-got-str-when-extracting-zip-file-with