Python TypeError: 'float' object is not callable when using Min() Max()

Question

I kept getting TypeError: 'float' object is not callable when I try to get the Min and Max value from my list using min() and max(). Any idea how to fix this please?

Here is my code:

count=0
sum=0.0
max=0.0
min=0.0
list=[]

while True:
    sval=input('enter a number: ')
    if sval=='done':
        break

    try:
        fval=float(sval)
    except:
        print('invalid number')
        continue
    sum = sum+fval
    count=count+1
    list.append(fval)
    print(list)
max_number = max(list)
min_number = min(list)

print(sum, count, sum/count, max_number, min_number)