Python | String translate()

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