[Python-Dev] Let's just keep lambda

Thu Feb 9 15:52:19 CET 2006

 >> Hmm. Can you give real-world examples (of existing code) where you
 >> needed this?
 Jiwon> Apparently, simplest example is,
 Jiwon> collection.visit(lambda x: print x)
Sure, but has several other people have indicated, statements are not
expressions in Python as they are in C (or in Lisp, which doesn't have
statements). You can't do this either:
 if print x:
 print 5
because "print x" is a statement, while the if statement only accepts
expressions.
Lambdas are expressions. Statements can't be embedded in expressions. That
statements and expressions are different is a core feature of the language.
That is almost certainly not going to change.
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[Python-Dev] Let's just *keep* lambda

[Python-Dev] Let's just keep lambda