s = "mouse"
animal_letter = s.find('s')
print animal_letter
string = "Hello World"
string_slice = string[1:10] # "ello Worl" (index 1 up to 10)
string_last_chars = string[-5:] # "World" (5th index from last to the end)
H = string[0] # "H"
kardiz = "Python"
kardiz[0]
'P'