python string indexof

1s = "mouse"
2animal_letter = s.find('s')
3print animal_letter

1string = "Hello World"
2string_slice = string[1:10] # "ello Worl" (index 1 up to 10)
3string_last_chars = string[-5:] # "World" (5th index from last to the end)
4H = string[0] # "H"

1sentence = 'Python programming is fun.'
2
3result = sentence.index('is fun')
4print("Substring 'is fun':", result)
5
6result = sentence.index('Java')
7print("Substring 'Java':", result)

1# Start from zero and the return value is exact index of first letter

1str.index(sub[, start[, end]] )