字符串操作

Python 中的正则表达式

Maria Eugenia Inzaugarat

Data Scientist

调整大小写

my_string = "tHis Is a niCe StriNg"

print(my_string.lower())

this is a nice string

print(my_string.upper())

THIS IS A NICE STRING

my_string = "tHis Is a niCe StriNg"

print(my_string.capitalize())

This is a nice string

my_string = "This string will be split"

my_string.split(sep=" ", maxsplit=2)

['This', 'string', 'will be split']

my_string.rsplit(sep=" ", maxsplit=2)

['This string will', 'be', 'split']

my_string = "This string will be split\nin two"

print(my_string)

This string will be split
in two

my_string = "This string will be split\nin two"

my_string.splitlines()

['This string will be split', 'in two']

my_list = ["this", "would", "be", "a", "string"]
print(" ".join(my_list))

this would be a string

my_string = " This string will be stripped\n"

my_string.strip()

'This string will be stripped'

my_string = " This string will be stripped\n"

my_string.rstrip()

' This string will be stripped'

my_string.lstrip()

'This string will be stripped\n'

Python 中的正则表达式