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bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700)

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Serhiy Storchaka 2019-06-01 11:00:15 +03:00 • committed by GitHub
parent 4a686504eb
commit 2085bd0877
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34 changed files with 126 additions and 261 deletions
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9
Lib/dataclasses.py
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@ -962,10 +962,7 @@ def _process_class(cls, init, repr, eq, order, unsafe_hash, frozen):
return cls
# _cls should never be specified by keyword, so start it with an
# underscore. The presence of _cls is used to detect if this
# decorator is being called with parameters or not.
def dataclass(_cls=None, *, init=True, repr=True, eq=True, order=False,
def dataclass(cls=None, /, *, init=True, repr=True, eq=True, order=False,
unsafe_hash=False, frozen=False):
"""Returns the same class as was passed in, with dunder methods
added based on the fields defined in the class.
@ -983,12 +980,12 @@ def dataclass(_cls=None, *, init=True, repr=True, eq=True, order=False,
return _process_class(cls, init, repr, eq, order, unsafe_hash, frozen)
# See if we're being called as @dataclass or @dataclass().
if _cls is None:
if cls is None:
# We're called with parens.
return wrap
# We're called as @dataclass without parens.
return wrap(_cls)
return wrap(cls)
def fields(class_or_instance):