Python String join() Method

​The join() function is a Python built-in function used to join elements of a sequence. It returns a new string. It can be used with many data types List , Tuple , String , etc.

string_name .join (iterable)

Example:

# Joining with empty separator
list = ['a', 'h', 'm', 'e', 'd']
print("".join(list))

The output will be:

ahmed

In the previous example, we use the join() function to join the elements of a list. with an empty string " " . and returns a new string

You can replace the empty string with any character or symbol

Example :

list = {'1', '2', '3', '4', '5','6','6'}
# put any characher to join
string = "_"
# joins elements of list by '_'
# and stores in string a
a = string.join(list)
# join use to join a list of
# strings to a separator a
print(a)

The output will be:

3_4_2_5_1_6

Note: The array must contain unique values ​​only so the repeating number 6 is not printed. Note also that the collection produces different outputs each time

 Example: 

# Joining with string
dic = {'Java': 1, 'C #': 2, 'Python': 3}
print(">".join(dic))

 The output will be:

Java>C #>Python

 In the previous example, we use the join() function to join the elements of a Dictionary. with a string containing a special character “<”. and returns a new string

 External sources:

 Built-in functions - official Python documentation

 If you have any questions or concerns, leave them in the comments