Python format phone number

Question

How would I go about formatting a 10 digit string: 0123456789 to phone number format:

(012) 345-6789

Is there a specific library to use or can you use regex?

I've done it the other way around by using re.sub('[^0-9]', '', '(012) 345-6789')

Answer 1

You can also use a library like phonenumbers?

Install it:

pip install --user phonenumbers

Code Sample:

import phonenumbers 
phonenumbers.format_number(phonenumbers.parse("0123456789", 'US'),
                           phonenumbers.PhoneNumberFormat.NATIONAL)

Output:

'(012) 345-6789'

Answer 2

import re
print('(%s) %s-%s' % tuple(re.findall(r'\d{4}$|\d{3}', '0123456789')))

This outputs:

(012) 345-6789