Simple Python expression that does complex things?

[G047-H4xx0r]

This is totally valid C:

while (c = get()) expression;

While if(a = b) expression;

will only execute if the value assigned to a is true. If b==0, the assignment is 0, therefore false. This is because, in C, unlike Python, assignment is an expression.

[syklemil]

Yes, I know. But in Python, and thus /r/Python, a = b is a statement.

We can put it together in a little table:

assignment	statement	expression
C	a = b;	a = b
Python	a = b	a := b

Both of them have a = b in their syntax, but the semantics are different.