s = "Artificial Intelligence with Python by Prateek Joshi" 
print("1: ",s[0:5]) 
 
print("2: ",s[-9:])  

print("3: ",s[0::2])

print("4: ",s[::-1])

print("5: ",s[10:29:3])

print("6: ",s[26:])

print("7: ",s[5:-6])