All TalkersCode Topics

Follow TalkersCode On Social Media

devloprr.com - A Social Media Network for developers Join Now ➔

Python Replace Multiple Characters In String

Last Updated : Jul 1, 2023

Python Replace Multiple Characters In String

In this article we will show you the solution of python replace multiple characters in string, every Python programmer has dealt with the problem of a character being replaced by another in the past. The requirement of a quick, one-line fix to complete this particular task does arise occasionally, though.

The replace(old, new) method of the Python String class (Str) allows you to change the substrings in a string.

It substitutes the new sub-string for all occurrences of an old substring.

The third argument is count, which determines, in terms of the number of characters to replace, how many characters should be in each string. Strings are types in Python, just like integers, floats, and booleans.

A string is data that is surrounded by single or double quotes. Character sequences are another name for a string.

Based on patterns, it replaces a string. A string or even a pattern are both acceptable first arguments.

The lambda function, which takes two arguments, extracts the matching substring from the input and then returns the dictionary value corresponding to it. As the third argument, it accepts the original string.

Step By Step Guide On Python Replace Multiple Characters In String :-

test_str = "abbabba"
# printing original string
print("The original string is : " + str(test_str))
# Using nested replace()
# Replace multiple characters at once
res = test_str.replace('a', '%temp%').replace('b', 'a').replace('%temp%', 'b')
# printing result
print("The string after replacement of positions : " + res)
  1. In the first step, we have initialized the string whose characters we would like to replace.
  2. After this, we have displayed the original string so that we can easily understand the difference between this and the expected output.
  3. Now we have used replace() and specified the characters that we wish to remove or change. It replaces all the occurrences of a sub-string with a new string by passing the old and new strings as parameters to the replace() function. To start replacing multiple substrings inside a string, call the function replace() more than once.
  4. There is also a third parameter that is optional in replace() which accepts an integer to set the maximum count of replacements to execute.
  5. On executing the program, the desired output is displayed.
  6. In the second program, we will see how translate() and maketrans() can be used to do the same.
  7. The users must keep this thing in their mind that it only works in Python 2.

Conclusion :-

As a result, we have successfully learned how to python replace multiple characters in string. Character data types are not recognized in Python.

In Python, a character is a string as well. Therefore, we can replace a string's multiple characters using the replace() method.

Changing characters in strings is possible with the help of the Python function replaces ().

The Python function replace() only accepts three arguments: the old string character, the new string character, and an optional third argument.

I hope this article on python replace multiple characters in string helps you and the steps and method mentioned above are easy to follow and implement.