msg.walk memory leak?

[falon]

BPO	39628
Nosy	@warsaw, @bitdancer, @maxking, @falon

^{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 = <Date 2020-02-21.10:08:22.769>
created_at = <Date 2020-02-13.15:05:28.453>
labels = ['invalid', 'expert-email', 'performance']
title = 'msg.walk memory leak?'
updated_at = <Date 2020-02-21.10:08:22.768>
user = 'https://github.com/falon'

bugs.python.org fields:

activity = <Date 2020-02-21.10:08:22.768>
actor = 'falon'
assignee = 'none'
closed = True
closed_date = <Date 2020-02-21.10:08:22.769>
closer = 'falon'
components = ['email']
creation = <Date 2020-02-13.15:05:28.453>
creator = 'falon'
dependencies = []
files = []
hgrepos = []
issue_num = 39628
keywords = []
message_count = 2.0
messages = ['361959', '362401']
nosy_count = 4.0
nosy_names = ['barry', 'r.david.murray', 'maxking', 'falon']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'resource usage'
url = 'https://bugs.python.org/issue39628'
versions = ['Python 3.6']

[falon]

Hello,

if I write

msg = email.message_from_bytes(...)
for part in msg.walk():
  content_type = part.get_content_type()
  if not part.get_content_maintype() == 'multipart':
     filename = part.get_filename(None)
     attachment = part.get_payload(decode=True)

if the mime parts are more than one, then the memory increases at each iteration and will never be released.

[falon]

uhm, no.
I can no more reproduce this. I was wrong. Sorry for the noise.