python – apply Operation on multiple variables

I know that this is a rather silly question and there are similar ones already answered, but they don’t quite fit, so… How can I perform the same operation on multiple variables in an efficient way, while “keeping” the individual variables? example:

a = 3
b = 4
c = 5
a,b,c *= 2  #(obviously this does not work)
print(a,b,c) 

What I want as the output in this scenario is 6, 8, 10. It is rather important that I can still use changed variables.

Thank you very much for your answers!

Answer

You can use numpy or python lambda function combined with map to do the same.

Using numpy:

In [17]: import numpy as np

In [18]: a = 3
    ...: b = 4
    ...: c = 5
    ...:

In [19]: a,b,c = np.multiply([a, b, c], 2)

In [20]: a
Out[20]: 6

In [21]: b
Out[21]: 8

In [22]: c
Out[22]: 10

Using lambda:

In [23]: a, b, c = list(map(lambda x: x*2, [a, b, c]))

In [24]: a
Out[24]: 12

In [25]: b
Out[25]: 16

In [26]: c
Out[26]: 20