argparse: parser aliases in subparsers stores alias in dest variable
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描述
| BPO | 36664 |
|---|---|
| Files |
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GitHub fields:
assignee = None
closed_at = None
created_at = <Date 2019-04-18.23:30:32.042>
labels = ['3.7', 'type-feature', 'library']
title = 'argparse: parser aliases in subparsers stores alias in dest variable'
updated_at = <Date 2019-11-01.01:51:18.147>
user = 'https://bugs.python.org/PeterMcEldowney'
bugs.python.org fields:
activity = <Date 2019-11-01.01:51:18.147>
actor = 'paul.j3'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2019-04-18.23:30:32.042>
creator = 'Peter McEldowney'
dependencies = []
files = ['48275']
hgrepos = []
issue_num = 36664
keywords = []
message_count = 5.0
messages = ['340515', '340525', '340595', '355759', '355779']
nosy_count = 3.0
nosy_names = ['paul.j3', 'nemeskeyd', 'Peter McEldowney']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue36664'
versions = ['Python 3.7']
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调研方向
从链接的 sample.py 开始,复现 argparse 子解析器别名是如何写入 dest 变量的。跟踪该行为进入 CPython 的 argparse 实现,并确定需要扩展的现有命令行解析测试;当别名行为与预期的 dest 值一致,且不会导致子解析器解析出现回归时,即视为完成。
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