num=int(input("Enter your range"))
for i in range(0,num):
power=len(str(i))
temp=i
s=0
while(temp>0):
d=temp%10
s=s+d**power
temp=temp//10
if(i==s):
print("This number is armstrong",s)
We just need to input from user the range. To know more or understand in simple way without range "Click" - for simple armstrong number program.