How to use a list of floats

[snippsat]

As and addition to what @wavic say,there are bad stuff in this code.
Never use range(len(something),not gone give up on this
Also overwrite of the original filepaths,you are getting back byte size so do not call it filepaths.
So look at this:

# Bad
import os

filepaths = ['E:/1py_div/uni.txt', 'E:/1py_div/h.py', 'E:/1py_div/cloud9.txt']
for i in range(len(filepaths)):
    filepaths[i] = os.path.getsize(filepaths[i])

print(filepaths) # [22, 190, 42043]

# Good
import os

filepaths = ['E:/1py_div/uni.txt', 'E:/1py_div/h.py', 'E:/1py_div/cloud9.txt']
file_byte_size = []
for index,item in enumerate(filepaths):
    file_byte_size.append(os.path.getsize(item))

print(file_byte_size) #[22, 190, 42043]

Ahh come to think of this,it's easy to forget the the easiest solution.

# Best
import os

filepaths = ['E:/1py_div/uni.txt', 'E:/1py_div/h.py', 'E:/1py_div/cloud9.txt']
file_byte_size = []
for item in filepaths:
    file_byte_size.append(os.path.getsize(item))

print(file_byte_size) #[22, 190, 42043]

list comprehension is also okay.

import os

filepaths = ['E:/1py_div/uni.txt', 'E:/1py_div/h.py', 'E:/1py_div/cloud9.txt']
file_byte_size = [os.path.getsize(item) for item in filepaths] #[22, 190, 42043]