求任意位数的水仙花数。

实现

#!/usr/bin/env python3
#-*- coding:utf-8 -*-
import math
from functools import reduce
#---------------------
def returnReverseNumber(ls):
    ls.reverse()
    return eval(reduce(lambda x,y:x+y,ls))
#Tip:Need a string number    
def returnNumberCharList(x):
    resultList=[]
    for temp in x:
        resultList.append(temp)
    return resultList
#Checking water god flower        
def checkNumber(num,n):
    ls=[]
    ls=map(lambda x:math.pow(int(x),n),returnNumberCharList(str(num)))
    if reduce(lambda x,y:x+y,ls)==num:
        return True
    else:
        return False




def main():
    result=[]
    n=0
    try:
        n=eval(input("Please input the number count:"))
        #range function: start,stop[,step]
        for x in list(range(10**(n-1),10**n-1,1)):
            if checkNumber(x,n):
                result.append(x)
        print(f"{n}-digit number's water god numbers:{result}")
    except Exception as e:
        print("The data's type of inputing is bad!")
        print("Error:",e)
    finally:
        pass
#---------------------
main()

输出

Please input the number count:3
3-digit number's water god numbers:[153, 370, 371, 407]

Q.E.D.