Python exercise: Sum values from text file and print the result

Python exercise
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Episode: 7 
Level: Beginner 

Let's say you have some text file and this file have different number on every line. 

input.txt

1:  223.5  
2:  -12.1  
3:  4308  
4:  -449.8  
5:  18.9  
6:  1  
7:  2209  
8:  -1890  
9:  14.45  

Your task is to sum all values from that file and print the result.

One solution is to use list comprehensions to make a list of values and then sum the list.

Solution:

1:  with open("input.txt", "r") as tf:  
2:    numbers = [float(line) for line in tf]  
3:    total = sum(numbers)  
4:    print(total)  

With numbers above what is your result?

o_o