379dc349-3a10-424f-b9d2-a0104f092359
commented
3 years ago Starting from the keyword-arguments example at https://docs.python.org/3/extending/extending.html#keyword-parameters-for-extension-functions, change the docstring of parrot to "parrot(voltage, state, action, type=1<<5)\n--\n\n" (yes, the documented default value for type does not correspond to the actual implementation, but that's irrelevant here). Compiling the extension module and running pydoc on it yields the following parsed signature for parrot: parrot(voltage, state, action) i.e. the type parameter got silently dropped. (Note that 1<<5 can legitimately occur, e.g. as a bitmask flag, especially given that one currently cannot refer to globals in __text_signature__ (https://bugs.python.org/issue37881).)
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: ```python assignee = None closed_at = None created_at =
labels = ['extension-modules']
title = '__text_signature__ parser silently drops arguments with certain unsupported default forms'
updated_at =
user = 'https://github.com/anntzer'
```
bugs.python.org fields:
```python
activity =
actor = 'Antony.Lee'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules']
creation =
creator = 'Antony.Lee'
dependencies = []
files = []
hgrepos = []
issue_num = 42976
keywords = []
message_count = 1.0
messages = ['385335']
nosy_count = 1.0
nosy_names = ['Antony.Lee']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue42976'
versions = []
```