fix support creation of union from generic class constructor #1134#4152
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asukaminato0721 wants to merge 1 commit into
Open
fix support creation of union from generic class constructor #1134#4152asukaminato0721 wants to merge 1 commit into
asukaminato0721 wants to merge 1 commit into
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Diff from mypy_primer, showing the effect of this PR on open source code: rotki (https://github.com/rotki/rotki)
- ERROR rotkehlchen/api/services/transactions.py:474:36-478:14: `dict[CHAINS_WITH_TRANSACTIONS_TYPE, list[BTCAddress | ChecksumAddress | SolanaAddress | SubstrateAddress]]` is not assignable to variable `blockchain_addresses` with type `dict[CHAINS_WITH_TRANSACTIONS_TYPE, ListOfBlockchainAddresses]` [bad-assignment]
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Summary
Fixes #1134
Generic constructors now expand union arguments against union type hints and union successful specializations, and all expansions must match, preventing unsafe mixed-argument cases.
Test Plan
add test