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Python String join() Method

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  • Difficulty Level : Basic
  • Last Updated : 10 Jun, 2022

join() is an inbuilt string function in Python used to join elements of the sequence separated by a string separator. This function joins elements of a sequence and makes it a string. 




string_name- It can be any string, character, digit or special character. 

The join() method takes iterable – objects capable of returning their members one at a time. Some examples are List, Tuple, String, Dictionary, and Set

Return Value: 

The join() method returns a string concatenated with the elements of iterable

Type Error:

If the iterable contains any non-string values, it raises a TypeError exception. 

Example 1: Working of join() method


# Python program to demonstrate the
# use of join function to join list
# elements with a character.
list1 = ['1','2','3','4']
s = "-"
# joins elements of list1 by '-'
# and stores in string s
s = s.join(list1)
# join use to join a list of
# strings to a separator s



Example 2: Joining with an empty string


# Python program to demonstrate the
# use of join function to join list
# elements without any separator.
# Joining with empty separator
list1 = ['g','e','e','k', 's']



Example 3: Joining String with multiple parameters


#Joining string character to string
#Joining special symbols with string
#Joining digits with string
#Joining special character with dictionary



Note: When joining a string with a dictionary,  it will join with the keys of a dictionary, not with values.

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