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guard clause Sequence indexing

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A_D 2021-07-07 14:45:05 +02:00
parent 39eaf608a2
commit feb05c60d0
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1 changed files with 14 additions and 10 deletions
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24
killswitch.py
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@ -1,8 +1,10 @@
"""Fetch kill switches from EDMC Repo."""
from __future__ import annotations
from copy import deepcopy
from typing import Any, Dict, List, Mapping, MutableMapping, MutableSequence, NamedTuple, Optional, Sequence, TypedDict, Union, cast
from copy import deepcopy
from typing import (
Any, Dict, List, Mapping, MutableMapping, MutableSequence, NamedTuple, Optional, Sequence, TypedDict, Union, cast
)
import requests
import semantic_version
@ -72,16 +74,18 @@ def _apply(target: Union[MutableMapping, MutableSequence], key: str, to_set: Any
target[key] = to_set
elif isinstance(target, MutableSequence):
if (idx := _get_int(key)) is not None:
if delete:
if len(target) > idx:
target.pop(idx)
if (idx := _get_int(key)) is None:
raise ValueError(f'Cannot use string {key!r} as int for index into Sequence')
elif len(target) == idx:
target.append(to_set)
if delete:
if len(target) > idx:
target.pop(idx)
else:
target[idx] = to_set # this can raise, that's fine
elif len(target) == idx:
target.append(to_set)
else:
target[idx] = to_set # this can raise, that's fine
else:
raise ValueError(f'Dont know how to apply data to {type(target)} {target!r}')