str.maketrans in Python

Returns the batch character substitution table for str.translate ().

str.maketrans (fromto [, to [, tonone]])

-> dict

fromto: Union [str | dict] - If there is only one argument, it is expected to display integers (Unicode representation) or strings ( one character long) to: integers, strings, or & # x27; None & # x27; - dictionary support added in py3.0. If & # x27; to & # x27; is specified, a string is expected (see below).

to: Optional [str] - If specified, strings & # x27; fromto & # x27; and & # x27; to & # x27; must be the same length.

tonone: Optional [str] - + py3.0 The string of characters to be replaced with & # x27; None & # x27 ;. 

---

This static class method is used to create a dictionary (table) of batch replacement of characters in a string, which can be passed to the method str.translate () .

  trans_table = str.maketrans ({
’ a’: ’b’ , 
 ’r’:’ t’, 
 ’z’: None, 
}) 
 # {97:’ b’, 114: ’t’, 122: None} 
 
 trans_table = str.maketrans (’ar’,’ bt’, ’z’) 
 # {97: 98, 114: 116, 122: None} 
 
’ arroz’.translate ( trans_table) 
 # ’btto’  

Note

Python 2 only supported two string-pending arguments.