40 lines
921 B
Plaintext
40 lines
921 B
Plaintext
Developers can use type hints to specify which type a function is expected to return. These annotations are not enforced at runtime and returning a different type might not fail. It is however likely to be unintended and will lead to maintainability issues, if not bugs.
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This rule raises an issue when a function or method returns a value that contradicts its type hint.
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== Noncompliant Code Example
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[source,python]
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----
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def hello() -> str:
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return 42 # Noncompliant. Function's type hint asks for a string return value
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----
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== Compliant Solution
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[source,python]
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----
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def hello() -> str:
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return "Hello"
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----
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== See
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* https://docs.python.org/3/library/typing.html[Python documentation - Support for type hints]
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ifdef::env-github,rspecator-view[]
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'''
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== Implementation Specification
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(visible only on this page)
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include::message.adoc[]
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include::highlighting.adoc[]
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endif::env-github,rspecator-view[]
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