how to multiply the element of list?

Question

how can i multiply any element of list because

a=[1,2,34,67]

and i wrote there a=a*2 give
a=[1,2,34,67,1,2,34,67]

how i can get this output

a=[2,4,68,134]

Answer 1

This is the quickest code I could come up with.

a=[1,2,34,67]
for i in range(len(a)):
a[i]=a[i]*2

print(a)

# Output [2, 4, 68, 134]

I'll edit this answer if I can find a shorter way.

EDIT: This is the shorter way

a=[i*2 for i in [1,2,34,67]]
print(a)

# Output [2, 4, 68, 134]