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Inform about no explicit export instead of attribute suggestions #9237

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merged 3 commits into from
Sep 13, 2020
Merged

Inform about no explicit export instead of attribute suggestions #9237

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cfd16de
Show information about no explicit export instead of suggestions
Jul 31, 2020
180ebe1
Append to message instead of overwriting
Jul 31, 2020
af9da27
Modify message to inform about disabled implicit reexport
Aug 14, 2020
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13 changes: 8 additions & 5 deletions mypy/semanal.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1802,11 +1802,14 @@ def report_missing_module_attribute(self, import_id: str, source_id: str, import
# Suggest alternatives, if any match is found.
module = self.modules.get(import_id)
if module:
alternatives = set(module.names.keys()).difference({source_id})
matches = best_matches(source_id, alternatives)[:3]
if matches:
suggestion = "; maybe {}?".format(pretty_seq(matches, "or"))
message += "{}".format(suggestion)
if not self.options.implicit_reexport and source_id in module.names.keys():
message += "; implicit reexport disabled"
else:
alternatives = set(module.names.keys()).difference({source_id})
matches = best_matches(source_id, alternatives)[:3]
if matches:
suggestion = "; maybe {}?".format(pretty_seq(matches, "or"))
message += "{}".format(suggestion)
self.fail(message, context, code=codes.ATTR_DEFINED)
self.add_unknown_imported_symbol(imported_id, context)

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20 changes: 16 additions & 4 deletions test-data/unit/check-flags.test
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Original file line number Diff line number Diff line change
Expand Up @@ -1210,7 +1210,7 @@ a = 5
[file other_module_2.py]
from other_module_1 import a
[out]
main:2: error: Module 'other_module_2' has no attribute 'a'
main:2: error: Module 'other_module_2' has no attribute 'a'; implicit reexport disabled

[case testNoImplicitReexportRespectsAll]
# flags: --no-implicit-reexport
Expand All @@ -1224,7 +1224,7 @@ from other_module_1 import a, b
__all__ = ('b',)
[builtins fixtures/tuple.pyi]
[out]
main:2: error: Module 'other_module_2' has no attribute 'a'
main:2: error: Module 'other_module_2' has no attribute 'a'; implicit reexport disabled

[case testNoImplicitReexportStarConsideredImplicit]
# flags: --no-implicit-reexport
Expand All @@ -1234,7 +1234,7 @@ a = 5
[file other_module_2.py]
from other_module_1 import *
[out]
main:2: error: Module 'other_module_2' has no attribute 'a'
main:2: error: Module 'other_module_2' has no attribute 'a'; implicit reexport disabled

[case testNoImplicitReexportStarCanBeReexportedWithAll]
# flags: --no-implicit-reexport
Expand All @@ -1248,7 +1248,19 @@ from other_module_1 import *
__all__ = ('b',)
[builtins fixtures/tuple.pyi]
[out]
main:2: error: Module 'other_module_2' has no attribute 'a'
main:2: error: Module 'other_module_2' has no attribute 'a'; implicit reexport disabled

[case textNoImplicitReexportSuggestions]
# flags: --no-implicit-reexport
from other_module_2 import attr_1

[file other_module_1.py]
attr_1 = 5
attr_2 = 6
[file other_module_2.py]
from other_module_1 import attr_1, attr_2
[out]
main:2: error: Module 'other_module_2' has no attribute 'attr_1'; implicit reexport disabled

[case testNoImplicitReexportMypyIni]
# flags: --config-file tmp/mypy.ini
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