Python Advanced---python Strip () split () function combat

Let's look at an example:

>>> ipaddr = 10.122.19.10File"", Line 1ipaddr= 10.122.19.10 ^syntaxerror:invalid Syntax>>> ipaddr ="10.122.19.10">>>Ipaddr.strip ()'10.122.19.10'>>> ipaddr ='10.122.19.10'>>>Ipaddr.strip ()'10.122.19.10'>>> Ipaddr.split ('.')['Ten','122',' +','Ten']>>> Ipaddr.strip (). Split ('.')['Ten','122',' +','Ten']>>>

Description of the Python strip () function

Function prototypes

Declaration: S is a string, RM is a sequence of characters to be deleted

S.strip (RM) Remove the characters from the beginning and end of the S string in the RM delete sequence

S.lStrip (RM) Delete the characters at the beginning of the S string in the RM delete sequence

S.rStrip (RM) Delete the character at the end of the S string in the RM delete sequence

Attention:

1. When RM is empty, the default is to remove the whitespace characters (including ' \ n ', ' \ R ', ' \ t ', ')

For example:

Copy CodeThe code is as follows:

'      123'>>> a.strip ()'123'>>> a='  \t\tabc'ABC'sdff\r\n' >>> a.strip ()'sdff'

2. The RM delete sequence here is deleted as long as the character on the edge (beginning or end) is within the delete sequence.

For example:

Copy CodeThe code is as follows:

' 123ABC ' >>> a.strip ('3abc ')'    The result is the same >>> A.strip ('a ')'  3ABC'

A summary of the usage of the Python split function (

Split usage of strings

Description
There is no character type in Python, only a string, the character here is a string that contains only one character!!!
The reason for writing here is just for the convenience of understanding, that's all.

1. Divide by a character, such as '. '

1 str = ('www.google.com')2print  str3 str_split = str.split ('. ' )4print str_split

The results are as follows:

2. Divide by one character and divide n times. If you press '. ' Split 1 times

1 str = ('www.google.com')2print  str3 str_split = str.split ('. ', 1)4print str_split

The results are as follows:

3. Split by a string. such as: ' | | '

1 str = ('winxp| | win7| | win8| | Win8.1')2print  str3 str_split = Str.split (' || ' )4print str_split

The results are as follows:

4. Divide by a string and divide n times. such as: Press ' | | ' Split 2 times

1 str = ('winxp| | win7| | win8| | Win8.1')2print  str3 str_split = Str.split (' || ', 2)4print str_split

The results are as follows:

5. Divide by a character (or string), divide n times, and assign the completed string (or character) of the partition to a new (n+1) variable. (Note: See opening instructions)
such as: Press '. ' Splits the character, splits it 1 times, and assigns the split string to 2 variables Str1,str2

1 url = ('www.google.com')2 str1, str2 = Url.split (' . ', 1)3print  str14print str2

The results are as follows:

An example of a regular match:

>>> str= "xxxxxxxxxxxx5 [50,0,50]>,xxxxxxxxxx"

>>> lst = Str.split ("[") [1].split ("]") [0].split (",")

>>> Print LST

[' 50 ', ' 0 ', ' 50 ']

Decomposition is as follows

>>> list =str.split ("[") divided by left

>>> Print List

[' xxxxxxxxxxxx5 ', ' 50,0,50]>,xxxxxxxxxx ']

>>> list =str.split ("[") [1].split ("]") contains and then splits on the right

Then the desired string is stored in the list according to the split pair.

>>> List

[' 50,0,50 ', ' >,xxxxxxxxxx ']

>>> str.split ("[") [1].split ("]") [0]

' 50,0,50 '

>>> str.split ("[") [1].split ("]") [0].split (",")

[' 50 ', ' 0 ', ' 50 ']

Transferred from: http://blog.csdn.net/feeltouch/article/details/49404671

Python Advanced---python Strip () split () function combat (GO)