Python: setting two variable values separated by a comma in python -

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what difference in python between doing:

a, b = c, max(a, b)

and

a = c b = max(a, b)

what having 2 variable assignments set on same line do?

your 2 snippets different things: try a, b , c equal 7, 8 , 9 respectively.

the first snippet sets 3 variables 9, 8 , 9. in other words, max(a, b) calculated before a assigned value of c. essentially, a, b = c, max(a, b) push 2 values onto stack; variables a , b assigned these values when popped off.

on other hand, running second snippet sets 3 variables 9. because a set point value of c before function call max(a, b) made.


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