How to force a integer to have a 1 decimal place in python

i have a list of integers and floats, let’s say

a = [1,2,3,4.1,5.2]

how do I parse them so that they return

[1.0,2.0,3.0,4.1,5.2]

I need them to be one decimal place because this is the way the files are named.

>Solution :

a = [1,2,3,4.1,5.2]
for i in range(0,len(a)):
  a[i] = "{:0.1f}".format(a[i])