Nrthugu

I have an inbox and I need to write a code that triggers every time a new message arrives, and extracts a body of that email.

I have this code so far:

import poplib, email

from email import parser



pop_conn = poplib.POP3_SSL('pop.gmail.com')

email_user = 'email@gmail.com'

email_pass = 'password'



pop_conn.user(email_user)

pop_conn.pass_(email_pass)



#Get messages from server:

messages = [pop_conn.retr(i) for i in range(1, 

len(pop_conn.list()[1]) + 1)]



#Parse message intom an email object:

messages = [parser.Parser().parsestr(mssg) for mssg in messages]

for message in messages:

    print(message.get_payload(None, True))



pop_conn.quit()

The error I am getting is:

---------------------------------------------------------------------------

TypeError                                 Traceback (most recent call last)

<ipython-input-6-2a08d6a8ccf9> in <module>()

  2 #Parse message intom an email object:

  3 #messages = [email.message_from_bytes(mssg) for mssg in messages]

----> 4 messages = [parser.Parser().parsestr(mssg) for mssg in messages]

  5 for message in messages:

  6 #    print(message['body'])



<ipython-input-6-2a08d6a8ccf9> in <listcomp>(.0)

  2 #Parse message intom an email object:

  3 #messages = [email.message_from_bytes(mssg) for mssg in messages]

----> 4 messages = [parser.Parser().parsestr(mssg) for mssg in messages]

  5 for message in messages:

  6 #    print(message['body'])



/Applications/anaconda3/lib/python3.6/email/parser.py in parsestr(self, text, headersonly)

 66         the file.

 67         """

---> 68         return self.parse(StringIO(text), headersonly=headersonly)

 69 

 70 



TypeError: initial_value must be str or None, not tuple



TypeError: initial_value must be str or None, not tuple

Why am I getting a tuple? How do I extract a body from the messages[n]?

The return value from retr() is a tuple. The second value in the tuple is a list of lines which comprise the actual message. See the Python poplib documentation for details.

# Get messages from server

popped = ['n'.join(pop_conn.retr(i)[1])

    for i in range(1, len(pop_conn.list()[1]) + 1)]



# Parse message into an email object

messages = [parser.Parser().parsestr(mssg) for mssg in popped]

Notice also how we avoid reusing the same variable name for objects of different types.