5 ways to handle one character at a time in Python

This article mainly introduces 5 methods of each character in Python, that is, to split the string into a character array or to cut the string into individual characters, a friend can refer to the

Objective

Each character of a string is processed, in fact, each character (Char) is a string of length 1.

Method

1. Use the built-in function list ()

The code is as follows:

>>> a_string= ' Python '

>>> char_list=list (a_string)

>>> char_list

[' P ', ' y ', ' t ', ' h ', ' o ', ' n ']

2. Use a For statement to traverse a string

The code is as follows:

>>> for C in a_string:

C.upper ()

P

Y

T

H

O

N

3. List resolution

The code is as follows:

>>> Char_list=[c.title () for C in a_string]

>>> char_list

[' P ', ' Y ', ' T ', ' H ', ' O ', ' N ']

4.map () function

The code is as follows:

>>> map ((Lambda C:c.lower ()), a_string)

[' P ', ' y ', ' t ', ' h ', ' o ', ' n ']

5. Use Set Set ()

The code is as follows:

b_string= ' Hello,world '

>>> set (a_string). Difference (set (b_string))

Set [' Y ', ' h ', ' t ', ' P ', ' n ']