from math import pi as PI
defCircleArea(r):ifisinstance(r,(int,float)):#确保接收的参数为数值return PI*r*r
else:print('You must give me an integer or float as radius.')
CircleArea(10)
defdemo(lst):
m =min(lst)
r =[m]for i in lst:print(i,'tttttt')if i == m:#r.append(lst.index(i))print(lst.index(i))#??????????????????return r
demo([1,2,3,3,3,1,1,1])
import random
defdemo(lst):
m =min(lst)
result =[m]for index, value inenumerate(lst):if value == m:
result.append(index)return result
x =[random.randint(1,20)for i inrange(20)]print(x)print(demo(x))