Summary of common Python string operation functions [split (), join (), strip ()], pythonstrip
This example describes common Python string operation functions. We will share this with you for your reference. The details are as follows:
Str. split ('')
1. Split by a certain character, such '.'
>>> s = ('www.google.com')>>> print(s)www.google.com>>> s.split('.')['www', 'google', 'com']
2. Split by a character and divide it n times. For example, split one time by '.'. The number of times the maxsplit bit is cut.
>>> s = 'www.google.com'>>> s'www.google.com'>>> s.split('.', maxsplit=1)['www', 'google.com']
3. Split by a string. For example, '|'
>>> s = 'WinXP||Win7||Win8||Win8.1'>>> s'WinXP||Win7||Win8||Win8.1'>>> s.split('||')['WinXP', 'Win7', 'Win8', 'Win8.1']>>>
''. Join (str)
Python hasjoin()
Andos.path.join()
The functions are as follows:
Join (): concatenate a string array. Concatenates string, tuples, and list elements with specified characters (delimiters) to generate a new string.
OS. path. join (): returns the result after combining multiple paths.
Operate the sequence (use ''and ':' as separators respectively)
>>> seq1 = ['hello','good','boy','doiido']>>> print ' '.join(seq1)hello good boy doiido>>> print ':'.join(seq1)hello:good:boy:doiido
Operate on strings
>>> seq2 = "hello good boy doiido">>> print ':'.join(seq2)h:e:l:l:o: :g:o:o:d: :b:o:y: :d:o:i:i:d:o
Operate on tuples
>>> seq3 = ('hello','good','boy','doiido')>>> print ':'.join(seq3)hello:good:boy:doiido
Operate dictionaries
>>> seq4 = {'hello':1,'good':2,'boy':3,'doiido':4}>>> print ':'.join(seq4)boy:good:doiido:hello
Merge Directories
>>> import os>>> os.path.join('/hello/','good/boy/','doiido')'/hello/good/boy/doiido'
Str. strip ()
Declaration: "s" is a string and "rm" is the sequence of characters to be deleted.
S. strip (rm) deletes the characters starting and ending in the s string and located in the rm deletion sequence;
S. lstrip (rm) Delete the characters starting from the s string and located in the rm Delete sequence;
S. rstrip (rm) deletes the characters at the end of the s string in the rm deletion sequence;
1. When rm is blank, blank spaces (including '\ n',' \ R', '\ t', '') are deleted by default ','')
For example:
>>> A = '123abc' >>> a. strip ('21') '3abc' returns the same result >>> a. strip ('12') '3abc'
2. Here, the rm Delete sequence is deleted as long as the characters on the edge (beginning or end) are in the delete sequence.
For example:
>>> A = '123abc' >>> a. strip ('21') '3abc' returns the same result >>> a. strip ('12') '3abc'