no-redundant-lambda¶

Collection: fixit-extra Autofix: Yes Python: Any

Replace simple lambdas that only forward their arguments to another callable. The replacement can change callback signature, arity, or introspection behavior.

Message¶

The lambda that wraps {function} is redundant and can be replaced by the callable.

Valid examples¶

lambda x: foo(y)

lambda x: foo(x, y)

lambda x, y: foo(x)

lambda *, x: foo(x)

lambda x = y: foo(x)

lambda x, y: foo(y, x)

lambda self: self.func()

lambda x, y: foo(y=x, x=y)

lambda x, y, *z: foo(x, y, z)

lambda x, y, **z: foo(x, y, z)

lambda: self.func()

lambda x, y, z: (t + u).math_call(x, y, z)

lambda x: obj.method(x)

class C:
    callback = lambda x: foo(x)

Invalid examples¶

lambda x: foo(x)

Suggested fix

foo