Python String join() method

Python String join() method

The String.join() method in Python concatenates each element of an iterable (such as list, string and tuple) to the given string and returns the concatenated string.

Syntax

string.join(seq)

Parameter

Seq: This parameter represents any iterable object where all the returned values are strings.

Return

This method returns the concatenated string.

Example 1

 # Python program explaining
 # the string.join() method
 # initializing the list with integer values
 List = ['11', '12', '13', '14']
 print("List:",List)
 comma = ', '
 # concatenating the comma with the list
 print("After join() method...")
 print("List:",comma.join(List))
 string1 = 'Hello'
 string2 = '!!!'
 # concatenating each character of string2 to the front of string1
 print('\nstring1.join(string2):', string1.join(string2))
 # concaneting each character of string1 to the front of string1
 print('string2.join(string1):', string2.join(string1)) 

Output

 List: ['11', '12', '13', '14']
 After join() method...
 List: 11, 12, 13, 14
 string1.join(string2): !Hello!Hello!
 string2.join(string1): H!!!e!!!l!!!l!!!o 

Example 2 

 # Python program explaining
 # the string.join() method
 # initializing the list with interger values
 List =  {'2', '1', '3'}
 seperator = ', '
 print(seperator.join(List))
 # initializing set 
 Set = {'Python', 'Java', 'Ruby'}
 seperator = '->->'
 # concanating each value of set at the front of the seperator
 print(seperator.join(Set)) 

Output

1, 3, 2
Ruby->->Python->->Java