Different ValueError for the same operation in List and Tuple

[HardikPatel]

BPO	36442
Nosy	@larryhastings, @serhiy-storchaka, @tirkarthi
Superseder	bpo-13349: Non-informative error message in index() and remove() functions

^{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 2019-03-31.17:10:26.651>
created_at = <Date 2019-03-26.17:11:24.906>
labels = ['interpreter-core', 'type-feature', '3.8']
title = 'Different ValueError for the same operation in List and Tuple'
updated_at = <Date 2019-03-31.17:10:26.651>
user = 'https://bugs.python.org/HardikPatel'

bugs.python.org fields:

activity = <Date 2019-03-31.17:10:26.651>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2019-03-31.17:10:26.651>
closer = 'serhiy.storchaka'
components = ['Interpreter Core']
creation = <Date 2019-03-26.17:11:24.906>
creator = 'HardikPatel'
dependencies = []
files = []
hgrepos = []
issue_num = 36442
keywords = []
message_count = 5.0
messages = ['338906', '338910', '339262', '339267', '339270']
nosy_count = 5.0
nosy_names = ['larry', 'SilentGhost', 'serhiy.storchaka', 'xtreak', 'HardikPatel']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '13349'
type = 'enhancement'
url = 'https://bugs.python.org/issue36442'
versions = ['Python 3.8']

[HardikPatel]

I am curious why ValueErrors are different in List and Tuple when I try to get an index.  ValueError of a list returns in well format with actual argument "ValueError: 'ITEM' is not in list", whereas tuple returns something like this "ValueError: tuple.index(x): x not in tuple". 
I think List and Tuple both are calling same index() method then why it is raising different ValueErrors? 
>>> jframe_li
['Angular', 'React', 'Vue.js', 'Ember.js', 'Mereor', 'Node.js', 'Backbone.js']
>>> jframe_tu
('Angular', 'React', 'Vue.js', 'Ember.js', 'Mereor', 'Node.js', 'Backbone.js')
>>> jframe_li.index('React')
1
>>> jframe_tu.index('React')
1
>>> jframe_li.index('react')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: 'react' is not in list

>>> jframe_tu.index('react')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: tuple.index(x): x not in tuple

[SilentGhost]

This seems to be related to argument clinic work (bpo-20186 and bpo-20185).

[serhiy-storchaka]

Thus is definitely is not related to Argument Clinic.

And seems that this issue is a duplicate of an old issue with a long discussion and an unfinished patch, but currently I cannot find that issue.

[tirkarthi]

And seems that this issue is a duplicate of an old issue with a long discussion and an unfinished patch, but currently I cannot find that issue.

possibly duplicate of bpo-13349 which was rejected ?

[serhiy-storchaka]

Yes, it is. Thank you Karthikeyan!