[abhirag]

Not the OP but I think he was referring to the restrictions python puts on lambda expressions:

- they can only contain a single expression

- they cannot contain statements

[Sohcahtoa82]

Python has lambdas that have multiple expressions and statements.

They're called functions.

[yen223]

Python functions aren't anonymous

[jmiserez]

For precondition checking, shouldn’t that suffice?

[baq]

Depends on the precondition.