#4167: [0.91-bugfixes][patch] FormFields have list-mutability issues with validator_list argument -------------------------------------------+-------------------------------- Reporter: Tom Tobin <[EMAIL PROTECTED] | Owner: adrian Status: new | Component: Core framework Version: 0.91 | Keywords: Stage: Unreviewed | Has_patch: 1 -------------------------------------------+-------------------------------- In `0.91-bugfixes`, `FormFields` have list-mutability issues with the `validator_list` argument in their `__init__` methods; since `validator_list` has a default of `[]`, that very same list is mutated and re-used in future calls with a default value for `validator_list`. By setting the default value to `None` and replacing `None` with `[]` in the method body, we avoid this issue.
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