string manipulation in Python

There is no separate string type in Python, and a string is a string of length 1. The string can be specified by the number of (slice), and the fragment is two subscripts separated by a colon:

>>>word= ' help ' + ' A '

>>>word

' Helpa '

>>>word[0:2]

Default value for fragment: The first subscript defaults to zero, and the second subscript is the length of the string when omitted.

The subscript is allowed to be negative, right-to-left numbers.

>>>WORD[-1]

A

>>>WORD[-2:0]

' PA '

>>>word[:-2]

' Hel '

An out-of-range subscript fragment is truncated, but in the case of a non-fragment, this is wrong.

>>>WORD[-100:]

' Helpa '

>>>WORD[-10] #error

Built-in function Len () returns the length of a string

String-related built-in methods:

String.lstrip ("pattern")

String.rstrip ("pattern")

String.strip ("pattern")

String.Split ("pattern")

string manipulation in Python