print variable string python

1name = "Bob"
2print(f"hello {name}!")

1var = "Python printing is amazing!"
2print(var)

1>>> print("{:d} {:03d} {:>20f}".format(1, 2, 1.1))
21 002             1.100000
3  ^^^
4  0's padded to 2
5

1print("If there was a birth every 7 seconds, there would be: {} births".format(births))
2