python / python/cpython

smtplib send_message should gives more clear exception if the msg is None

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3.10 stdlib topic-email type-feature
Dominant language
Python
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Description

BPO 42807
Nosy @warsaw, @terryjreedy, @bitdancer, @maxking, @oonid

Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-01-02.04:23:16.263>
labels = ['type-feature', 'library', '3.10']
title = 'smtplib send_message should gives more clear exception if the msg is None'
updated_at = <Date 2021-01-08.21:34:29.403>
user = 'https://github.com/oonid'

bugs.python.org fields:

activity = <Date 2021-01-08.21:34:29.403>
actor = 'terry.reedy'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-01-02.04:23:16.263>
creator = 'oon'
dependencies = []
files = []
hgrepos = []
issue_num = 42807
keywords = []
message_count = 2.0
messages = ['384216', '384692']
nosy_count = 5.0
nosy_names = ['barry', 'terry.reedy', 'r.david.murray', 'maxking', 'oon']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'test needed'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue42807'
versions = ['Python 3.10']

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating smtplib.send_message and inspect how it handles a None message. Check the existing smtplib tests, add coverage for this input, and confirm that the resulting exception is clearer without changing other send_message behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
networking
Issue type
Feature
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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