Why does the body part of email is not found Python imap? - python-3.x

Question

Found an article about reading email with Python. The sender of the letter and the subject are found but there are problems with body of the mail - it is not found. Maybe there are some other ways to read body?
import imaplib
import email
from email.header import decode_header
import webbrowser
import os
# account credentials
username = "username#mail.ru"
password = "password"
def clean(text):
return "".join(c if c.isalnum() else "_" for c in text)
imap = imaplib.IMAP4_SSL("imap.mail.ru")
imap.login(username, password)
# it is spam folder id
status, messages = imap.select("&BCEEPwQwBDw-")
messages = int(messages[0])
for i in range(messages, 0, -1):
res, msg = imap.fetch(str(i), "(RFC822)")
for response in msg:
if isinstance(response, tuple):
msg = email.message_from_bytes(response[1])
subject, encoding = decode_header(msg["Subject"])[0]
if isinstance(subject, bytes):
subject = subject.decode(encoding)
From, encoding = decode_header(msg.get("From"))[0]
if isinstance(From, bytes):
From = From.decode(encoding)
print("Subject:", subject)
print("From:", From)
if msg.is_multipart():
for part in msg.walk():
# extract content type of email
content_type = part.get_content_type()
content_disposition = str(part.get("Content-Disposition"))
try:
body = part.get_payload(decode=True).decode()
except:
pass
if content_type == "text/plain" and "attachment" not in content_disposition:
print(body)
elif "attachment" in content_disposition:
filename = part.get_filename()
if filename:
folder_name = clean(subject)
if not os.path.isdir(folder_name):
os.mkdir(folder_name)
filepath = os.path.join(folder_name, filename)
open(filepath, "wb").write(part.get_payload(decode=True))
else:
content_type = msg.get_content_type()
body = msg.get_payload(decode=True).decode()
if content_type == "text/plain":
print(body)
if content_type == "text/html":
folder_name = clean(subject)
if not os.path.isdir(folder_name):
os.mkdir(folder_name)
filename = "index.html"
filepath = os.path.join(folder_name, filename)
open(filepath, "w").write(body)
webbrowser.open(filepath)
imap.close()
imap.logout()
For some reason, the body is not located and because of this, an error appears.
NameError: name 'body' is not defined

Answer 1

body is not defined because of this:
try:
body = part.get_payload(decode=True).decode()
except:
pass
You tried to define body, but failed due to some kind of error that you allowed to pass silently (hint: don't do that!). Then the next blocks of code assumed that body had already been assigned when it hadn't.
Solution: define body outside of the try/except clause:
body = None
try:
body = part.get_payload(decode=True).decode()
except:
# pass
import traceback
traceback.print_exception()
# this way you'll at least know what the error was