Python Programming On Win32

Sequence Types

There are three sequence types: strings , lists, and tuples . String literals are written in single or double quotes: 'xyzzy', "frobozz". See Chapter 2 of the Python reference manual for more about string literals. Lists are constructed with square brackets, separating items with commas: [a, b, c]. Tuples are constructed by the comma operator (not within square brackets), with or without enclosing parentheses, but an empty tuple must have the enclosing parentheses, e.g., a, b, c or (). A single item tuple must have a trailing comma, e.g., (d,).

Sequence types support the following operations. The in and not in operations have the same priorities as the comparison operations. The + and * operations have the same priority as the corresponding numeric operations.^[2]

The following table lists the sequence operations sorted in ascending priority (operations in the same box have the same priority). s and t are sequences of the same type; n, i, and j are integers.

Operation	Result	Notes
x in s	1 if an item of s is equal to x, else 0
x not in s	0 if an item of s is equal to x, else 1
s + t	The concatenation of s and t
s * n , n * s	n copies of s concatenated	3
s[i]	i‘th item of s, origin 0	1
s[i:j]	Slice of s from i to j	1, 2
len(s)	Length of s
min(s)	Smallest item of s
max(s)	Largest item of s

Notes

1. If i or j is negative, the index is relative to the end of the string; i.e., len(s) + i or len(s) + j is substituted. ...