Colab 

x = "the quick brown fox jumped over the lazy dog"
x.find("fox")
x[16:]


'fox jumped over the lazy dog'

x[16:19]


'fox'

x[0:19]


'the quick brown fox'

x[:19]


'the quick brown fox'

x[:]


'the quick brown fox jumped over the lazy dog'

x[::1]


'the quick brown fox jumped over the lazy dog'

x[16::-1]


'f nworb kciuq eht'