How to stop inputs on the presence of CR

[sylas]

I come back to my old problem

my co# file7.py

def getvalue():
    value = input("enter the value ")
    print("value entered : ", value)
    if value.strip == '':
        exit(0)
    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()
    sum=sum+value
    print("sum", sum)
    count = count + 1

de here