How come string.maketrans does not work in Python 3.1?

Question

I\'m a Python newbie.

How come this doesn\'t work in Python 3.1?

from string import maketrans   # Required to call maketrans function.

intab = \"aei         


        

Answer 1

Strings are not bytes.

This is a simple definition in Python 3.

Strings are Unicode (which are not bytes) Unicode strings use "..." or '...'

Bytes are bytes (which are not strings) Byte strings use b"..." or b'...'.

Use b"aeiou" to create a byte sequence composed of the ASCII codes for certain letters.

Answer 2

maketrans is a string function

use below logic to use translate using maketrans

print('maketrans' , '& translate')
intab = "aeiou"
outtab = "12345"
str = "Fruits are delicious and healthy!!!"
trantab = str.maketrans(intab, outtab)
print (str.translate(trantab))

Answer 3

Here is an example of performing translation and deletion, in Python 2 or 3:

import sys


DELETE_CHARS = '!@#$%^*()+=?\'\"{}[]<>!`:;|\\/-,.'


if sys.version_info < (3,):

    import string

    def fix_string(s, old=None, new=None):
        if old:
            table = string.maketrans(old, new)
        else:
            table = None
        return s.translate(table, DELETE_CHARS)

else:

    def fix_string(s, old='', new=''):
        table = s.maketrans(old, new, DELETE_CHARS)
        return s.translate(table)

Answer 4

In Python 3, the string.maketrans() function is deprecated and is replaced by new static methods, bytes.maketrans() and bytearray.maketrans().

This change solves the confusion around which types were supported by the string module.

Now str, bytes, and bytearray each have their own maketrans and translate methods with intermediate translation tables of the appropriate type.