Tiny issue in the regular expression chapter

[senarclens]

I'm a proud owner of the dead tree edition of your grand book and
believe that the book is really great! I still found a few minor
quirks and checked them against the version here on GIT and most of them were already corrected.
However, there's one left in regular-expressions.html#phonenumbers

The last example in the section is
"""

phonePattern = re.compile(r'''
# don't match beginning of string, number can start anywhere
(\d{3}) # area code is 3 digits (e.g. '800')
\D* # optional separator is any number of non-digits
(\d{3}) # trunk is 3 digits (e.g. '555')
\D* # optional separator
(\d{4}) # rest of number is 4 digits (e.g. '1212')
\D* # optional separator
(\d*) # extension is optional and can be any number of digits
$ # end of string
''', re.VERBOSE)
phonePattern.search('work 1-(800) 555.1212 #1234').groups() ①
('800', '555', '1212', '1234')
phonePattern.search('800-555-1212') ②
('800', '555', '1212', '')
"""

The .groups() is missing in the second numbered line in order to match the
suggested output.

• expected output:
  ('800', '555', '1212', '')
• actual output:
  <_sre.SRE_Match at 0x3b52ab0>
• suggested fix:
  append ".groups()" to last input line

Again - the book is great work and I gladly recommend it to my
students. Thanks for sharing!