[Solved] How to fix AttributeError: “NoneType” object has no attribute “encode” using smtplib

I tried to make a script to allow a user to send the contents of a file via gmail.

This is is my code:

if input1 == 'mail':
    path = input("open -- ")
    with open(path, "r") as file:
        addr = os.environ.get("email")
        pw = os.environ.get("pass")
        server = smtplib.SMTP("smtp.gmail.com", 587)
        server.login(addr, pw)
        reading = file.read()
        subject = path
        body = reading
        msg = f'Subject {subject}nn{body}'
        input3 = ('recipient -- ')
        server.sendmail(email, input3, msg)'

and it’s giving me this error:

  File "C:/Users/Whit/PycharmProjects/rps/venv/Scripts/maxnum.py", line 36, in <module>
    server.login(addr, pw)
  File "C:UsersWhitAppDataLocalProgramsPythonPython37-32libsmtplib.py", line 721, in login
  File "C:UsersWhitAppDataLocalProgramsPythonPython37-32libsmtplib.py", line 638, in auth
    authobject(challenge).encode('ascii'), eol='')
AttributeError: 'NoneType' object has no attribute 'encode'

Solution #1:

You are doing server.login(addr, pw), but getting addr and pw through environment variables. It seems you have not actually passed them like that.

Respondent: Akshay Maldhure

Solution #2:

This usually occurs when you create the environment variables but forget to restart your editor. So a simple restart should fix the problem.

Respondent: Michael J

Solution #3:

Some value you provided to smtplib is None. Most likely is I’d the result of one or both of the calls to getent.

What is your program expected to do if email or pass environment variables are not set? You should probably check the result of getent before continuing.

Respondent: Jonathon Reinhart

The answers/resolutions are collected from stackoverflow, are licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0 .

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