8000 Provide hint when Union type with None may not have been narrowed by angelawuuu · Pull Request #17178 · python/mypy · GitHub
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Provide hint when Union type with None may not have been narrowed #17178

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Provide hint when Union type with None may not have been narrowed #17178

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80f9788
added new circumstance of having NONE as the second object of a union…
Apr 23, 2024
8000
0c28fad
added new circumstance of having NONE as the second object of a union…
Apr 23, 2024
30493ba
Add back new circumstance of having NONE as the second object of a union
angelawuuu Apr 24, 2024
7f4ea67
add note to use None guard when an an error complaining about None ty…
angelawuuu Apr 24, 2024
9b15594
uses actual variable name in note to use None guard when error compla…
angelawuuu Apr 24, 2024
b743fa1
remove extraneous parenthesis around if block
angelawuuu Apr 24, 2024
2a2d50c
fixed issue with getting variable name for None guard hint
angelawuuu Apr 24, 2024
f4b905a
fixed variable name when expression is a NameExpr for adding None gua…
angelawuuu Apr 24, 2024
70d5669
Fixed variable name for hint if context.expr is an instance of NameExpr
angelawuuu Apr 24, 2024
a65ac35
updated tests to provide note to use None guard when accessing attrib…
angelawuuu Apr 24, 2024
f31cf9c
Added test case that checks for note when a union type with None does…
angelawuuu Apr 24, 2024
ab28935
fixed linter issues
angelawuuu Apr 25, 2024
a102f95
Added checks that context is a MemberExpr before accessing its expr a…
angelawuuu Apr 25, 2024
310e619
Merge branch 'master' into union
angelawuuu Apr 29, 2024
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Fixed variable name for hint if context.expr is an instance of NameExpr
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@angelawuuu
angelawuuu committed Apr 24, 2024
commit 70d5669410eb1e7b5dfac5deaf8fb9e454e67f45
2 changes: 2 additions & 0 deletions mypy/messages.py
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Original file line number Diff line number Diff line change
Expand Up @@ -534,6 +534,8 @@ def has_no_attr(
if typ_format == '"None"':
if isinstance(context, NameExpr):
var_name = f' {context.name}'
elif isinstance(context.expr, NameExpr):
var_name = f' {context.expr.name}'
elif isinstance(context.expr, MemberExpr):
var_name = f' {get_member_expr_fullname(context.expr)}'
else:
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