Cousera 上的一个课程作业，目的是允许用户连续输入几个整数、比较它们的大小。

这里我定义了两个函数来进行比较，结果显示一直是 none，不知道是哪一步错了，望各位不吝赐教

initiate the min/max value

largest = None smallest = None

we could define the function of comparison with def()

def larger(largest, fnum): if largest is None: largest = fnum else: if largest < fnum: largest = fnum return smallest

def smaller(smallest, fnum): if smallest is None: smallest = fnum else: if smallest > fnum: smallest = fnum return smallest

use while to make loop

while True:

let user input the numbers

snum = input('Enter a number: ')

insert the if (done)

if snum == "done":
    break

Transfer to float type

we use try/except to aviod explosion

try:
    fnum = int(snum)
except:
    print ("Invalid input")
    continue

make comparison (MAX)

larger(largest, fnum)

make comparison (MIN)

smaller(smallest, fnum)

print the result

print ("Maximum is", largest) print ("Minimum is", smallest)