program-
count=0
print("Enter number to count in between 1 and 100")
n=input()
for i in range(1,101):
count=count+str(i).count(n)
print("Number of 7 in between 1 and 100 is:",count)
Enter number to count in between 1 and 100
7
Number of 7 in between 1 and 100 is: 20
Enter number to count in between 1 and 100
0
Number of 7 in between 1 and 100 is: 11