Assign several variables at once in Python

Python lets you assign more than one variable in a single line. There are two different forms.

The program

x = y = z = 100
a, b, c = 1, 2, 3

print(x, y, z)
print(a, b, c)

100 100 100
1 2 3

How it works

• x = y = z = 100 gives the same value to all three names.
• a, b, c = 1, 2, 3 gives a different value to each name, in order. The number of names on the left must match the number of values on the right.
• print() with several values separates them with a space.

When the counts don't match

try:
    a, b = 1, 2, 3
except ValueError as error:
    print(error)

too many values to unpack (expected 2)

The ValueError: too many values to unpack page explains this error in detail.