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Collections.UserString in Python

  • Difficulty Level : Basic
  • Last Updated : 31 Aug, 2021

Strings are the arrays of bytes representing Unicode characters. However, Python does not support the character data type. A character is a string of length one. 
Example:

Python3




# Python program to demonstrate
# string
 
# Creating a String 
# with single Quotes
String1 = 'Welcome to the Geeks World'
print("String with the use of Single Quotes: ")
print(String1)
   
# Creating a String
# with double Quotes
String1 = "I'm a Geek"
print("\nString with the use of Double Quotes: ")
print(String1)

Output:

String with the use of Single Quotes: 
Welcome to the Geeks World

String with the use of Double Quotes: 
I'm a Geek

Note: For more information, refer to Python String
 

Collections.UserString

Python supports a String like a container called UserString present in the collections module. This class acts as a wrapper class around the string objects. This class is useful when one wants to create a string of their own with some modified functionality or with some new functionality. It can be considered as a way of adding new behaviors for the string. This class takes any argument that can be converted to string and simulates a string whose content is kept in a regular string. The string is accessible by the data attribute of this class.
Syntax: 

collections.UserString(seq)

Example 1:



Python3




# Python program to demonstrate
# userstring
 
 
from collections import UserString
 
 
d = 12344
 
# Creating an UserDict
userS = UserString(d)
print(userS.data)
 
 
# Creating an empty UserDict
userS = UserString("")
print(userS.data)

Output: 

12344

Example 2:

Python3




# Python program to demonstrate
# userstring
  
 
from collections import UserString
  
 
# Creating a Mutable String
class Mystring(UserString):
     
    # Function to append to
    # string
    def append(self, s):
        self.data += s
         
    # Function to remove from
    # string
    def remove(self, s):
        self.data = self.data.replace(s, "")
     
# Driver's code
s1 = Mystring("Geeks")
print("Original String:", s1.data)
 
# Appending to string
s1.append("s")
print("String After Appending:", s1.data)
 
# Removing from string
s1.remove("e")
print("String after Removing:", s1.data)

Output:

Original String: Geeks
String After Appending: Geekss
String after Removing: Gkss

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