Check duplicate bases when defining TypedDict - #11485
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| typeddict_bases = [] | ||
| typeddict_bases_set = set() | ||
| for expr in defn.base_type_exprs: | ||
| if (not isinstance(expr, RefExpr) or |
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I feel like there's two many nots here for this code to be readable. It looks like there are three cases: (1) the base class is TypedDict of some sort (expr.fullname in TPDICT_NAMES); (2) the base class is another TypedDict; (3) anything else, which produces an error. The code would be more readable if we covered those three cases in order, without any nots.
JelleZijlstra
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Nov 8, 2021
tushar-deepsource
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Jan 20, 2022
### Description Closes python#3673 Adds a trivial for-loop and a helper set to check duplicates of `typeddict_bases`. ## Test Plan Adds a new test case `testCannotCreateTypedDictWithDuplicateBases`
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Description
Closes #3673
Adds a trivial for-loop and a helper set to check duplicates of
typeddict_bases.Test Plan
Adds a new test case
testCannotCreateTypedDictWithDuplicateBases