Reflect AST changes in Python 3.8. #616
Merged
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Steps
Description
There will be several changes in AST in Python 3.8.
ast.Num
,ast.Str
,ast.Bytes
,ast.Ellipsis
andast.NameConstant
are replaced withast.Constant
.(https://bugs.python.org/issue32892)
ast.Constant
can be used since Python 3.6, it is just thatast.parse()
didn't produce it.This PR adds a handler for
ast.Constant
inTreeRebuilder
.Simplified AST for subscriptions.
ast.Index
is replaced with its value,ast.ExtSlice
is replaced withast.Tuple
.(https://bugs.python.org/issue34822)
This change is not merged yet.
Since the code like
a[(::1, 1:)]
is invalid syntax, tuples should be handled specially inas_string()
when used as indices in subscription. As side effect, a comma with a space instead of a just comma is now used for separating slices in theas_string()
output.Type of Changes
Closes #617.