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Failing to parse header on simple example #1029

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robambalu opened this issue Jul 10, 2020 · 2 comments
Closed

Failing to parse header on simple example #1029

robambalu opened this issue Jul 10, 2020 · 2 comments
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acknowledged wont fix

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@robambalu
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@robambalu robambalu commented Jul 10, 2020

I just installed gitpython and on my very first attempt I'm hitting strange errors.
Simple example, NYC corona virus github:
git clone https://github.com/nychealth/coronavirus-data

in python, create repo:

r = Repo( 'coronavirus-data')

lets get the latest commit date ( poof )

r.head.commit.committed_date
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\robam\AppData\Local\Programs\Python\Python38\lib\site-packages\gitdb\util.py", line 253, in getattr
self.set_cache(attr)
File "C:\Users\robam\AppData\Local\Programs\Python\Python38\lib\site-packages\git\objects\commit.py", line 142, in set_cache
_binsha, _typename, self.size, stream = self.repo.odb.stream(self.binsha)
File "C:\Users\robam\AppData\Local\Programs\Python\Python38\lib\site-packages\git\db.py", line 42, in stream
hexsha, typename, size, stream = self._git.stream_object_data(bin_to_hex(sha))
File "C:\Users\robam\AppData\Local\Programs\Python\Python38\lib\site-packages\git\cmd.py", line 1085, in stream_object_data
hexsha, typename, size = self.__get_object_header(cmd, ref)
File "C:\Users\robam\AppData\Local\Programs\Python\Python38\lib\site-packages\git\cmd.py", line 1057, in __get_object_header
return self._parse_object_header(cmd.stdout.readline())
File "C:\Users\robam\AppData\Local\Programs\Python\Python38\lib\site-packages\git\cmd.py", line 1021, in _parse_object_header
raise ValueError("SHA %s could not be resolved, git returned: %r" % (tokens[0], header_line.strip()))
ValueError: SHA b'10004,Financial' could not be resolved, git returned: b'10004,Financial District,Manhattan,33,903.96,3650.61,1,27.39,6.75,489'
@robambalu
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@robambalu robambalu commented Jul 12, 2020

FYI this seems to be a problem when running from an interactive shell, running within a script seems to work ok
@Byron
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@Byron Byron commented Jul 12, 2020

I believe this is a shortcoming when there are multiple handles to objects at the same time. Depending on the order of operations, they may interfere with each other. Due to long-lived objects in an interactive shell, this issue may be more prominent than in scripts, where one more naturally works with one object at a time.

The only way to workaround this is to create a repository with a non-default object database implementation.

In the hopes that this helps, I am closing the issue on the grounds of it being know and that a fix is not possible, but a workaround. Please let me know if you think this is something else, or if the workaround doesn't seem effective.
@Byron Byron closed this Jul 12, 2020
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