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SeepMystery
f09c94258c
* Starred arguments were not working as type variables. --------- Co-authored-by: Peter Bierma <zintensitydev@gmail.com> Co-authored-by: Kay Hayen <kay.hayen@gmail.com>
104 lines
2.5 KiB
Python
104 lines
2.5 KiB
Python
# Copyright 2026, Kay Hayen, mailto:kay.hayen@gmail.com find license text at end of file
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"""Generic annotations tests, cover most important forms of them."""
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# Tests are dirty on purpose.
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#
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# pylint: disable=not-an-iterable,unused-argument
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import sys
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from typing import Tuple, TypeVar, TypeVarTuple
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T = TypeVar("T")
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Ts = TypeVarTuple("Ts")
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print("Module level T=", T)
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print("Module level Ts=", Ts)
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print()
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print("[Part: 1] Unpacking a TypeVar tuple with star list arguments gives:")
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def func1(*args: *Ts) -> None:
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print("Function level Ts=", Ts)
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print("Function level *Ts=", *Ts)
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func1()
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print(func1.__annotations__, "\n")
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print("[Part: 2] Manually defining a Tuple[int,...] gives:")
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def func21(*args: *Tuple[int, ...]) -> None:
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pass
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func21()
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print("Annotations", func21.__annotations__, "\n")
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def func22(*args: *tuple[int, ...]) -> None:
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pass
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func22()
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print("Annotations", func22.__annotations__, "\n")
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print("[Part: 3] Unpacking a TypeVar tuple with star list arguments gives:")
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def func31(*args: Tuple[*Ts]) -> Tuple[*Ts]:
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print("Function level Ts=", Ts)
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print("Function level *Ts=", *Ts)
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func31()
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print("Annotations", func31.__annotations__, "\n")
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def func32(*args: tuple[*Ts]) -> tuple[*Ts]:
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print("Function level Ts=", Ts)
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print("Function level *Ts=", *Ts)
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func32()
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print("Annotations", func32.__annotations__, "\n")
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# TODO: Disabled for Python3.14, because the argument error for print(*T) is not
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# yet compatible, but TypeError is raised indeed.
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if sys.version_info < (3, 14):
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print(
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"[Part: 4] Unpacking a TypeVar with star list arguments should raise an error:"
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)
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try:
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def func4(*args: *T) -> T:
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print(T)
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print(*T)
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func4()
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print("Annotations", func4.__annotations__, "\n")
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except TypeError as e:
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print("Expected error:", e, "\n")
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# Python tests originally created or extracted from other peoples work. The
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# parts were too small to be protected.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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