Object of type io textiowrapper has no len ошибка

Hey, i’ve got a list inside a file like [«one», «two», «three»], which i’d like to import into my python script. I’ve tried it with
list1 = open(«list1.txt», «r») but that didn’t work. Could somebody help me with this please? I’m new to python and i just need to fix this one last problem.

This is the whole script.

import random, time, tweepy

list1 = open("list1.txt", "r")
list2 = open("list2.txt", "r")
list3 = open("list3.txt", "r")

def one():
    return random.choice(list1) + random.choice(list2)

def two():
    return random.choice(list2) + random.choice(list3)

#I'm working on a Twitter bot, that's just some twitter stuff down here 
consumer_key = 'XXX'
consumer_secret = 'XXX'
access_token = 'XXX'
access_token_secret = 'XXX'
auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_token_secret)
api = tweepy.API(auth)

while True:
    postthis = random.choice([one,two])()
    if len(postthis) <= 140:
        api.update_status(status=postthis)
        time.sleep(10)

And the error message:

Traceback (most recent call last):
  File "C:/Users/User/Desktop/Example/example.py", line 22, in <module>
    postthis = random.choice([one,two])()
  File "C:/Users/User/Desktop/Example/example.py", line 11, in two
    return random.choice(list2) + random.choice(list3)
  File "C:UsersUserAppDataLocalProgramsPythonPython36-32librandom.py", line 256, in choice
    i = self._randbelow(len(seq))
TypeError: object of type '_io.TextIOWrapper' has no len()
>>>

I also don’t understand the error has no len(). The content of my files are just very long lists, nothing else included. Maybe somebody has an alternative solution? Thanks so much

You need to change this:

with open(name, mode = "r") as self.message_plain:
    self.message_plain.read().encode("utf-8")

into this:

with open(name, mode="r") as input_file:
    self.message_plain = input_file.read().encode("utf-8")

The 1st with block is functionally equivalent to this:

self.message_plain = open(name, mode = "r")
self.message_plain.read().encode("utf-8")
self.message_plain.close()

which does not make sense because it just makes self.message_plain into a file object and does not save the actual contents read().

The 2nd with block is functionally equivalent to this:

input_file = open(name, mode = "r")
self.message_plain = input_file.read().encode("utf-8")
input_file.close()

which makes more sense.

Basically, you were using the with statement incorrectly, because you changed the type of self.message_plain to <class '_io.TextIOWrapper'>. You can check this by printing type(self.message_plain) after/outside of the with statement. But the encrypt_and_digest method is expecting a bytes-like sequence:

>>> help(cipher.encrypt_and_digest)
Help on method encrypt_and_digest in module Crypto.Cipher._mode_gcm:

encrypt_and_digest(plaintext, output=None) method of Crypto.Cipher._mode_gcm.GcmMode instance
    Perform encrypt() and digest() in one step.

    :Parameters:
      plaintext : bytes/bytearray/memoryview
        The piece of data to encrypt.
...

I’d like to also suggest improvements to your coding style.

1. Put spaces after commas.

   Instead of this:

   self.cipher_text,self.tag_mac,self.salt,self.nonce = received_message
   

   Write it like this:

   self.cipher_text, self.tag_mac, self.salt, self.nonce = received_message
   

2. Class names should use the CapWords convention.
   Instead of:

   class transmitter
   

   Change it to

   class Transmitter
   

3. Initialize your variables to the same type you expect them to be.

   Instead of this:

   self.message_plain = True
   

   Initialize it to an empty string ("") or (None) instead.

Полный код выглядит следующим образом:

from Crypto.Protocol.KDF import scrypt
from Crypto.Cipher import AES
from Crypto.Random import get_random_bytes

class transmitter():

    def __init__(self):

        self.random_password = None
        self.message_plain = True
        self.key = None
        self.salt = None

        self.password_option()
        self.text_option()
        self.encrypt()


    def password_option(self):

        while ( self.random_password == None ):

            random = input("nDo you want to generate a random symmetric key? (y/n)nn>>> ").strip().lower()

            if random == "y":
                self.random_password = True
                self.random()

            elif random == "n":
                self.random_password = False
                self.random()

            else:
                pass

    def text_option(self):

        if self.message_plain:

            question = input("nHow will you enter your message?nn[1] filenn[2] directly in the programnn>>> ").strip()

            if question == "1":
                path = input("nEnter the file pathnn>>> ")
                name = path.split("\")[-1]
                with open(name,mode = "r") as self.message_plain:
                    self.message_plain.read().encode("utf-8")

            elif question == "2":
                self.message_plain = input("nEnter your messagenn>>> ").strip()
                self.message_plain = self.message_plain.encode("utf-8")


    def random(self):

        if self.random_password:
            password = "password".encode("utf-8")
            self.salt = get_random_bytes(16)
            self.key = scrypt(password, self.salt, 16, N=2**14, r=8, p=1)

        else:
            password = input("nEnter your passwordnn>>> ").strip()
            self.salt = get_random_bytes(16)
            self.key = scrypt(password.encode("utf-8"), self.salt, 16, N=2**14, r=8, p=1)


    def encrypt(self):

        cipher = AES.new(self.key,AES.MODE_GCM)
        cipher.update(b"header")
        cipher_text,tag_mac = cipher.encrypt_and_digest(self.message_plain)
        transmitted_message = cipher_text,tag_mac,self.salt,cipher.nonce
        Receptor(transmitted_message)

class receiver():

    def __init__(self,received_message):
        # nonce = aes_cipher.nonce
        self.cipher_text,self.tag_mac,self.salt,self.nonce = received_message
        self.decrypt(self.cipher_text,self.tag_mac,self.salt,self.nonce)

    def decrypt(self,cipher_text,tag_mac,salt,nonce):

        try:
            password = input("nEnter your passwordnn>>> ").strip()
            decryption_key = scrypt(password.encode("utf-8"), salt, 16, N=2**14, r=8, p=1)
            cipher = AES.new(decryption_key,AES.MODE_GCM,nonce)
            cipher.update(b"header")
            plain_text = cipher.decrypt_and_verify(cipher_text,tag_mac)
            plain_text = plain_text.decode("utf-8")
            print(f"nText -> {plain_text}n")

        except ValueError:
            print("nAn error has occurred..n")

if __name__ == '__main__':
    init = transmitter()

И ошибка следующая:

Traceback (most recent call last):
  File ".crypto.py", line 109, in <module>
    init = Emisor()
  File ".crypto.py", line 16, in __init__
    self.encrypt()
  File ".crypto.py", line 74, in encrypt
    cipher_text,tag_mac = cipher.encrypt_and_digest(self.message_plain)
  File "C:UsersEQUIPOAppDataLocalProgramsPythonPython37-32libsite-packagesCryptoCipher_mode_gcm.py", line 547, in encryp
t_and_digest
    return self.encrypt(plaintext, output=output), self.digest()
  File "C:UsersEQUIPOAppDataLocalProgramsPythonPython37-32libsite-packagesCryptoCipher_mode_gcm.py", line 374, in encryp
t
    ciphertext = self._cipher.encrypt(plaintext, output=output)
  File "C:UsersEQUIPOAppDataLocalProgramsPythonPython37-32libsite-packagesCryptoCipher_mode_ctr.py", line 189, in encryp
t
    ciphertext = create_string_buffer(len(plaintext))
TypeError: object of type '_io.TextIOWrapper' has no len()

Все перепробовал, но, честно говоря, не знаю, что еще делать. Кто-нибудь знает, что может быть не так?

По сути, я хочу сохранить результат чтения определенного файла в переменной. Чтобы я мог его зашифровать. К счастью, остальная часть кода работает хорошо, только один блок кода (первый, который я задал вопросом), который представляет ошибку.