Python | String translate()

Last Updated : 24 Jul, 2020

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

There are two ways to translate :

Providing a mapping as a dictionary

Parameters :

string.translate(mapping)

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.

# 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

One more example:

# 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

Providing a mapping using maketrans()

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 needs to be deleted.

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

# 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

Output :

Original string: geeks
Translated string: ks

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