Add command-line interface for the ast module

[serhiy-storchaka]

BPO	38049
Nosy	@brettcannon, @rhettinger, @benjaminp, @serhiy-storchaka, @1st1
PRs	bpo-38049: Add command-line interface for the ast module. #15724
Dependencies	bpo-37995: Multiline ast.dump()

^{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 2019-09-09.20:42:56.014>
created_at = <Date 2019-09-07.09:31:33.173>
labels = ['type-feature', 'library', '3.9']
title = 'Add command-line interface for the ast module'
updated_at = <Date 2019-09-09.20:42:56.013>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2019-09-09.20:42:56.013>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2019-09-09.20:42:56.014>
closer = 'serhiy.storchaka'
components = ['Library (Lib)']
creation = <Date 2019-09-07.09:31:33.173>
creator = 'serhiy.storchaka'
dependencies = ['37995']
files = []
hgrepos = []
issue_num = 38049
keywords = ['patch']
message_count = 2.0
messages = ['351297', '351550']
nosy_count = 5.0
nosy_names = ['brett.cannon', 'rhettinger', 'benjamin.peterson', 'serhiy.storchaka', 'yselivanov']
pr_nums = ['15724']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue38049'
versions = ['Python 3.9']

[serhiy-storchaka]

The proposed PR adds a simple command-line interface to the ast module, similar to CLI of the tokenize and dis modules. It reads the content of a specified file (or stdin), parses it with ast.parse() and outputs the tree with ast.dump().

It can be used for learning internals of the Python compiler, in addition to tokenize and dis.

[serhiy-storchaka]

New changeset 832e864 by Serhiy Storchaka in branch 'master':
bpo-38049: Add command-line interface for the ast module. (GH-15724)
832e864