Python string translate














































Python string translate



Python String : translate()


This article demonstrates how to use of translate() method in string.

The string translate() method returns a string where each character is mapped to its corresponding character in the translation table.

The translate() method takes the translation table to replace/translate characters in the given string as per the mapping table.

The translation table is created by the static method maketrans() .


Syntax :

string.translate(table)


Parameter Values :

table - a translation table containing the mapping between two characters; usually created by maketrans()


Returns :

The translate() method returns a string where each character is mapped to its corresponding character as per the translation table.




Sample Code :

1.
firstString = "abc"
secondString = "ghi"
thirdString = "ab"

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

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

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

Output :
Original string: abcdef 
Translated string: idef 

Here, the translation mapping translation contains the mapping from a, b and c to g, h and i respectively.

But, the removal string thirdString resets the mapping to a and b to None.

So, when the string is translated using translate()a and b are removed, and c is replaced i outputting idef.



2.
# translation table - a dictionary
translation = {97None98None99105}

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

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

Output :
Original string: abcdef 
Translated string: idef 

Here, we don't create a translation table from maketrans() but, we manually create the mapping dictionary translation.

This translation is then used to translate the string string to get the same output as the previous example.



Hence,we can see above that the translate() function translates string according to translation table str(256 chars), removing those in the string.



**********END OF ARTICLE **********


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