+def make_ugly(prettynumber):
+ """
+ function to take a phone number and strip out all non-numeric
+ characters
+
+ >>> make_ugly("+012-(345)-678-90")
+ '+01234567890'
+ """
+ return normalize_number(prettynumber)
+
+
+def normalize_number(prettynumber):
+ """
+ function to take a phone number and strip out all non-numeric
+ characters
+
+ >>> normalize_number("+012-(345)-678-90")
+ '+01234567890'
+ >>> normalize_number("1-(345)-678-9000")
+ '+13456789000'
+ >>> normalize_number("+1-(345)-678-9000")
+ '+13456789000'
+ """
+ uglynumber = re.sub('[^0-9+]', '', prettynumber)
+
+ if uglynumber.startswith("+"):
+ pass
+ elif uglynumber.startswith("1"):
+ uglynumber = "+"+uglynumber
+ elif 10 <= len(uglynumber):
+ assert uglynumber[0] not in ("+", "1")
+ uglynumber = "+1"+uglynumber
+ else:
+ pass
+
+ return uglynumber
+
+
+def _make_pretty_with_areacode(phonenumber):
+ prettynumber = "(%s)" % (phonenumber[0:3], )
+ if 3 < len(phonenumber):
+ prettynumber += " %s" % (phonenumber[3:6], )
+ if 6 < len(phonenumber):
+ prettynumber += "-%s" % (phonenumber[6:], )
+ return prettynumber
+
+
+def _make_pretty_local(phonenumber):
+ prettynumber = "%s" % (phonenumber[0:3], )
+ if 3 < len(phonenumber):
+ prettynumber += "-%s" % (phonenumber[3:], )
+ return prettynumber
+
+
+def _make_pretty_international(phonenumber):
+ prettynumber = phonenumber
+ if phonenumber.startswith("1"):
+ prettynumber = "1 "
+ prettynumber += _make_pretty_with_areacode(phonenumber[1:])
+ return prettynumber
+
+
+def make_pretty(phonenumber):
+ """
+ Function to take a phone number and return the pretty version
+ pretty numbers:
+ if phonenumber begins with 0:
+ ...-(...)-...-....
+ if phonenumber begins with 1: ( for gizmo callback numbers )
+ 1 (...)-...-....
+ if phonenumber is 13 digits:
+ (...)-...-....
+ if phonenumber is 10 digits:
+ ...-....
+ >>> make_pretty("12")
+ '12'
+ >>> make_pretty("1234567")
+ '123-4567'
+ >>> make_pretty("2345678901")
+ '+1 (234) 567-8901'
+ >>> make_pretty("12345678901")
+ '+1 (234) 567-8901'
+ >>> make_pretty("01234567890")
+ '+012 (345) 678-90'
+ >>> make_pretty("+01234567890")
+ '+012 (345) 678-90'
+ >>> make_pretty("+12")
+ '+1 (2)'
+ >>> make_pretty("+123")
+ '+1 (23)'
+ >>> make_pretty("+1234")
+ '+1 (234)'
+ """
+ if phonenumber is None or phonenumber is "":
+ return ""
+
+ phonenumber = normalize_number(phonenumber)
+
+ if phonenumber[0] == "+":
+ prettynumber = _make_pretty_international(phonenumber[1:])
+ if not prettynumber.startswith("+"):
+ prettynumber = "+"+prettynumber
+ elif 8 < len(phonenumber) and phonenumber[0] in ("1", ):
+ prettynumber = _make_pretty_international(phonenumber)
+ elif 7 < len(phonenumber):
+ prettynumber = _make_pretty_with_areacode(phonenumber)
+ elif 3 < len(phonenumber):
+ prettynumber = _make_pretty_local(phonenumber)
+ else:
+ prettynumber = phonenumber
+ return prettynumber.strip()
+
+
+def abbrev_relative_date(date):
+ """
+ >>> abbrev_relative_date("42 hours ago")
+ '42 h'
+ >>> abbrev_relative_date("2 days ago")
+ '2 d'
+ >>> abbrev_relative_date("4 weeks ago")
+ '4 w'
+ """
+ parts = date.split(" ")
+ return "%s %s" % (parts[0], parts[1][0])
+
+