Python string handler function

Returns a string that is stripped of the specified character

Remove whitespace characters by default
Remove the kinsoku characters: Str.strip ([char])
Delete First character: Str.lstrip ([char])
Delete tail character str.strip ([char])

To determine whether to match the first and last characters

Match success returns true, otherwise false
Match first character: Str.startswith (char[, start[, end]])
Match last character: Str.endswith (char[, start[, end]])

Find character, find return character position, otherwise return-1

Find Str.find (char[, start[, end]) from the beginning of the string
Find Str.find (char[, start[, end]) from the end of the string

Explode characters

Str.split ([Sep [, Maxsplit]])

Connection character

Str.join (iterable)
"Str" is a concatenated character, "Iterable" is a concatenated, iterated string

Replace character

Str.replace (old, new [, Count])
Returns the replaced string, count identifies the number of substitutions, and all characters are replaced by default

Break string by newline character, return row list

Str.splitlines ([keepends])
The result does not preserve newline characters unless keepends is true.

Uppercase and lowercase conversions

Case swap: Str.swapace ()
Convert to uppercase: Str.upper ()
Convert to lowercase: str.lower ()

Python string handler function