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Title: Index out of range in get of message.EmailMessage.get()
Type: behavior Stage: resolved
Components: email Versions: Python 3.6
Status: closed Resolution: works for me
Dependencies: Superseder:
Assigned To: Nosy List: Michala, barry, maxking, r.david.murray, radar383
Priority: normal Keywords: patch

Created on 2017-09-13 09:53 by Michala, last changed 2022-04-11 14:58 by admin. This issue is now closed.

File name Uploaded Description Edit Michala, 2017-10-09 13:01
Pull Requests
URL Status Linked Edit
PR 6825 closed radar383, 2018-05-14 19:47
PR 6828 closed bfrosik, 2018-05-14 20:06
Messages (5)
msg302043 - (view) Author: (Michala) Date: 2017-09-13 09:53
This error occured when the email field "From" was demanded:

  File "/home/user/processing/Test/", line 84, in __init__
    self.field_from_full = msg.get("From")
  File "/usr/local/lib/python3.6/email/", line 471, in get
    return self.policy.header_fetch_parse(k, v)
  File "/usr/local/lib/python3.6/email/", line 162, in header_fetch_parse
    return self.header_factory(name, value)
  File "/usr/local/lib/python3.6/email/", line 586, in __call__
    return self[name](name, value)
  File "/usr/local/lib/python3.6/email/", line 197, in __new__
    cls.parse(value, kwds)
  File "/usr/local/lib/python3.6/email/", line 337, in parse
    kwds['parse_tree'] = address_list = cls.value_parser(value)
  File "/usr/local/lib/python3.6/email/", line 328, in value_parser
    address_list, value = parser.get_address_list(value)
  File "/usr/local/lib/python3.6/email/", line 2336, in get_address_list
    token, value = get_address(value)
  File "/usr/local/lib/python3.6/email/", line 2313, in get_address
    token, value = get_group(value)
  File "/usr/local/lib/python3.6/email/", line 2284, in get_group
    if value[0] != ';':
IndexError: string index out of range

I used EmailPolicy, so the message object was instance of EmailMessage.
Header field "From" had following form: 
"From: Bonifac Karaka :"
msg303948 - (view) Author: (Michala) Date: 2017-10-09 13:01
I added 2 lines into the file "email/"
into the function "get_mailbox_list(value)" before return value:

    if not value:
        value = ';'
    return mailbox_list, value

It is in attachments.
msg316565 - (view) Author: Randy Wong (radar383) * Date: 2018-05-14 19:47
Submitted pull request: 
fix-issue-31455: Changed by adding two lines in the module "email/" into the function "get_mailbox_list(value)" before return mailbox_list, value to avoid IndexError.
msg345629 - (view) Author: Abhilash Raj (maxking) * (Python committer) Date: 2019-06-14 18:52
I can't reproduce this issue on the latest master branch. This seems to be fixed as a part of a different PR I suppose.

    >>> import email
    >>> msg = email.message_from_string("From: Bonifac Karaka :")
    >>> msg['From']
    'Bonifac Karaka :'

This is very similar to bpo-32178, which also is now fixed.

@david, @barry, I think we can close this issue.
msg347589 - (view) Author: R. David Murray (r.david.murray) * (Python committer) Date: 2019-07-10 01:08
Note that the reporter indicated that the message was an instance of EmailMessage (the new API).  You'd need to use policy-default to get that using message_from_string.  But yes, this was fixed in another issue.
Date User Action Args
2022-04-11 14:58:52adminsetgithub: 75626
2019-07-10 01:08:34r.david.murraysetstatus: open -> closed

messages: + msg347589
stage: patch review -> resolved
2019-06-14 18:52:51maxkingsetnosy: + maxking
messages: + msg345629
2018-05-14 20:06:14bfrosiksetpull_requests: + pull_request6512
2018-05-14 19:47:22radar383setnosy: + radar383
messages: + msg316565
pull_requests: + pull_request6510

keywords: + patch
stage: patch review
2017-10-09 13:01:34Michalasetfiles: +
resolution: works for me
messages: + msg303948
2017-09-13 09:53:21Michalacreate