Python String translate() Method

Python String translate() returns a string that is a modified string of givens string according to given translation mappings. 

There are two ways to translate.

• Python String translate() with mapping as a dictionary
• Mapping using maketrans()

Method 1. Providing a mapping as a dictionary

Syntax: string.translate(mapping)

Parameter: mapping: A dictionary having mapping between two characters. 

Returns: Returns modified string where each character is mapped to its corresponding character according to the provided mapping table. 

Example 1:

In this example, we are going to see how to use Python string translate() methods with a dictionary.

Python3

# Python3 code to demonstrate
# translations without
# maketrans()

# specifying the mapping
# using ASCII
table = { 119 : 103, 121 : 102, 117 : None }

# target string
trg = "weeksyourweeks"

# Printing original string
print ("The string before translating is : ", end ="")
print (trg)

# using translate() to make translations.
print ("The string after translating is : ", end ="")
print (trg.translate(table))

Output:

The string before translating is : weeksyourweeks
The string after translating is : geeksforgeeks

Example 2:

Python3

# Python 3 Program to show working
# of translate() method

# specifying the mapping
# using ASCII
translation = {103: None, 101: None, 101: None}

string = "geeks"
print("Original string:", string)

# translate string
print("Translated string:",
       string.translate(translation))

Output:

Original string: geeks
Translated string: ks

Method 2. Providing a mapping using maketrans()

In this method, we will use mapping with maketrans() methods.

Syntax: maketrans(str1, str2, str3) 

Parameters: 

• str1: Specifies the list of characters that need to be replaced. 
• str2: Specifies the list of characters with which the characters need to be replaced. 
• str3: Specifies the list of characters that need to be deleted.

Returns: Returns the translation table which specifies the conversions that can be used by translate()

Python3

# Python 3 Program to show working
# of translate() method

# First String
firstString = "gef"

# Second String
secondString = "eks"

# Third String
thirdString = "ge"

# Original String
string = "geeks"
print("Original string:", string)

translation = string.maketrans(firstString,
                               secondString,
                               thirdString)

# Translated String
print("Translated string:",
       string.translate(translation))

Output:

Original string: geeks
Translated string: ks