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The ellipsis literal (`...`) can be used in multiple contexts: - Placeholders: `class Foo: ...` - Containers: `Tuple[int, ...]` - Assignments: `x = ...` This is a trickier pattern to match because we can't rely on keyword boundaries, so we instead look for exactly three dots (`...`). This does mean that we will match the `...` portion of `x...x`, which isn't valid Python syntax, but I think that's an acceptable trade-off that avoids making this pattern much more complex. Reference: - https://docs.python.org/3/library/constants.html#Ellipsis closes: #18107 Signed-off-by: Jon Parise <jon@indelible.org> Signed-off-by: Christian Brabandt <cb@256bit.org>
44 lines
641 B
Python
44 lines
641 B
Python
# Ellipsis Literal
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# https://docs.python.org/3/library/constants.html#Ellipsis
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# Placeholders
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...
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...
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x = ...
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y = ... # Comment
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class C: ...
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lambda: ...
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# Annotations
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numbers: Tuple[int, ...]
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# Doctests
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"""A doctest
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>>> class A:
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... def __init__(self):
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... ...
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>>> class B: ...
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>>> x = ...
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>>> raise ValueError('multi\n line\ndetail')
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Traceback (most recent call last):
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...
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ValueError: multi
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line
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detail
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>>> print(list(range(20))) # doctest: +ELLIPSIS
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[0, 1, ..., 18, 19]
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>>> exec(s) #doctest: +ELLIPSIS
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-3.21716034272e-0...7
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"""
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class C:
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"""
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>>> class C:
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... def __init__(self):
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... ...
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"""
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# Numpy
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x[..., 0]
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