How to stop inputs on the presence of CR

[sylas]

This program works very well with C++. I think it should be the same with python3. I modified a little my code Here thenew

# file4.py
import sys
def getvalue(value, sum):
    value=input("enter the value ")
    print("value entered : ", value)
    #if input=CR then return
    sum += value#put value into sum, (apparently correct for only integers)
    print("sum", sum)
    return ;#value;



size=40
print("here is the addition of many numers (even with a .) Maximum of numbers=",size)
print("once you have finished your list of numbers, just press ENTER to indicate the end\n")
sum=0.0
value=0.0
count=1
while (count != 0):
        getvalue(0,0)
        count=count +1