[Python] How to print out variable name instead of value?

If I have a list of variables and each variable is assigned to an equation, how can I print the variable itself from the list not the result of the equation

For example:

x = 1 + 1
y = 2 + 2
z = 3 + 3

list = [x, y, z]

print(list[0])
print(list[1])
print(list[2])


Should print out:

x
y
z


Instead of:

2
4
6

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