Python String Replace

The Python string replace function is one of the Python String Method which is used to replace all occurrence of an existing string or character(s) with a new substring.

In this article we will show you, How to replace string in Python Programming with example.

Python Replace Syntax

The basic syntax of the Python replace function is as shown below:

String_Value.replace(old_string, new_string, count)

• String_Value: Please select a valid String literal.
• Old_string: Specify the substring that you want to replace.
• New_string: This is the new substring that would replace the Old_string.
• Count: This is an optional argument. Specify the number of times you want to replace the old_string with new_string. If you Omit this parameter, Python replace Function will replace all occurrence of old_string with new_string.

Python Replace String Example

In this example, we are using this replace function to replace all occurrence of t with X. Remember, replace function replaces case sensitive. It means, it will replace only t characters, not T.

# Python String Replace Example
 
string = 'Tutorial Gateway Provides Python Programming Tutorial'
 
x = string.replace('t', 'X')
 
print(x)

OUTPUT

This is an extension to the first example. Within the first statement, we are replacing t with X. In the second statement, a was replaced by W. Next, the third statement replace e with Z.

string = 'tutorial gateway provides python programming tutorial'
print(string)
 
x = string.replace('t', 'X')
print(x)
 
y = string.replace('a', 'W')
print(y)
 
z = string.replace('e', 'Z')
print(z)

OUTPUT

Python String Replace Multiple Characters Example

In this example, first, we are replacing tutorial with Alpha. Next, we are replacing pro with Di and assigned the result to y.

string = 'tutorial gateway provides python programming tutorial'
print(string)
 
x = string.replace('tutorial', 'Alpha')
print(x)
 
y = string.replace('pro', 'Di')
print(y)

OUTPUT

Python Replace Character in String at index Example

In this example, we are using this replace function along with count argument. The second statement replaces the first occurrence of abc with XYZ. The third statement replaces the first two occurrence of abc with substring XYZ. And the fourth statement replaces the first three instance of abc with XYZ.

string = 'we are abc working at abc company in abc position'
print(string)
 
x = string.replace('abc', 'XYZ')
print(x)
 
y = string.replace('abc', 'XYZ', 1)
print(y)
 
z = string.replace('abc', 'XYZ', 2)
print(z)
 
m = string.replace('abc', 'XYZ', 3)
print(m)

OUTPUT

Practical Python Replace Example

This program allows the user to enter the string, string to be replaced, and the new string to replace with. Next, we used the replace function to replace the old string with new.

string = input("Please enter any String :  ")
old_string = input("Please enter the String to replace : ")
new_string = input("Please enter the new String : ")
 
x = string.replace(old_string, new_string)
print(x)
 
y = string.replace(old_string, new_string, 1)
print(y)
 
z = string.replace(old_string, new_string, 2)
print(z)

OUTPUT

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