Split && Join && Append

These three methods of personal feeling is very practical, and very similar, so put together:

Split && Join
	Split	Note 1	NOTE 2
	Function: Splits a string; Returns a list	1. You can split characters that do not exist in the string and return to the full list: string = ' Sadhjfhdj ' Print String.Split ("5") >>>[' SADHJFHDJ ']	But you can't leave the separator blank!
		2. Can be used in conjunction with various methods of the list, such as slicing
		3. You can add a parameter to determine how many splits are made: string = ' 121212121 ' Print String.Split ("2", 1) >>>[' 1 ', ' 1212121 ']
	Os.path.split ()	Ex: Import OS Print Os.path.split ("C://documents and Xxx/junzhou/what/file.txt") >>> (' c://documents and Xxx/junzhou/what ', ' file.txt ')
	Function: Divides the path from the file name; returns a tuple
	join	ex: A = (' A ', ' B ', ' C ', ' d ') print ". Join (a) >>>ABCD b = [' 1 ', ' 2 ', ' 3 ', ' 4 '] print '. Join (b) >>>123456 C = ' 123456 ' print '. '. Join© >>>1.2.3.4.5.6
	Os.path.join ()	Ex print os.path.join (' windows\temp ', ' c:\\ ', ' csv ', ' test.csv ') >>>c:\csv\test.csv Print Os.path.join (' c:\\ ', ' csv ', ' test.csv ') >>>c:\csv\test.csv	Parameters before the first absolute path will be ignored!

Append

Append is the list method that will add elements to the list tail:

A = [' 1 ', ' 2 ', ' 3 ']
A.append (4)
Print a

>>>[' 1 ', ' 2 ', ' 3 ', ' 4 ']

Here's a little bit to do with the join: Append is for list, so no matter what list can be implemented, and join only for the STR type, if you need to connect to a list, each item in this list must be str type

Such as:

A = [1,2,3,4]

print '. '. Join (a)

>>> Error exception because the item in list A is of type int