45 lines
1.1 KiB
Plaintext
45 lines
1.1 KiB
Plaintext
== Why is this an issue?
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By contract, every Python function returns something, even if it's the ``++None++`` value, which can be returned implicitly by omitting the ``++return++`` statement, or explicitly.
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The ``++__init__++`` method is required to return ``++None++``. A ``++TypeError++`` will be raised if the ``++__init__++`` method either ``++yield++``s or ``++return++``s any expression other than ``++None++``. Returning some expression that evaluates to ``++None++`` will not raise an error, but is considered bad practice.
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=== Noncompliant code example
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[source,python]
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----
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class MyClass(object):
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def __init__(self):
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self.message = 'Hello'
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return self # Noncompliant
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----
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=== Compliant solution
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[source,python]
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----
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class MyClass(object):
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def __init__(self):
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self.message = 'Hello'
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----
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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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'''
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== Comments And Links
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(visible only on this page)
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include::comments-and-links.adoc[]
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endif::env-github,rspecator-view[]
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