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bpo-40334: PEP 617 implementation: New PEG parser for CPython (GH-19503)

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Co-authored-by: Guido van Rossum <guido@python.org>
Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
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Pablo Galindo 2020-04-22 23:29:27 +01:00 • committed by GitHub
parent a81849b031
commit c5fc156852
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91 changed files with 27057 additions and 146 deletions
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15
Lib/test/test_unpack_ex.py
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@ -158,14 +158,15 @@ List comprehension element unpacking
...
SyntaxError: iterable unpacking cannot be used in comprehension
Generator expression in function arguments
# Pegen is better here.
# Generator expression in function arguments
>>> list(*x for x in (range(5) for i in range(3)))
Traceback (most recent call last):
...
list(*x for x in (range(5) for i in range(3)))
^
SyntaxError: invalid syntax
# >>> list(*x for x in (range(5) for i in range(3)))
# Traceback (most recent call last):
# ...
# list(*x for x in (range(5) for i in range(3)))
# ^
# SyntaxError: invalid syntax
>>> dict(**x for x in [{1:2}])
Traceback (most recent call last):