for in range()

for x in range(10): #Print x 10 times.
    print(x)

print("----------------------") #Seperate

for y in range(5, 20): #Start at 5 and print up to 20.
    print(y)

print("----------------------") #Seperate

for i in range(10, 40, 5): #Start at 10 and print up to 40, and count by 5.
    print(i)