> So all one really needs to do (say if one wants to call back) is to extract > one single 10 digit number using the above logic by stripping off the > optional prefixes and the extra characters (which I presume would be quite > trivial). But then maybe my mind is not working well today early morning :) >
Kenneth's original email ( http://mail.python.org/pipermail/bangpypers/2010-November/005386.html) doesn' say whether he wishes to validate or extract. Depending on how far one wants to go - validation of phone number (depending on additional information one may have) can get very complex. e.g. If one needs to validate a landline telephone number for person staying in chhatisgadh - then a valid telephone number like 080-3033777 is NOT valid in this case since this number belongs to b'lore. Similarly for mobile numbers, not ALL 10 digit numbers starting with 9,8 or 7 are valid. Several 4 digit codes in 8xxx, and 7xxx are unallocated - hence invalid. look at http://en.wikipedia.org/wiki/Mobile_telephone_numbering_in_India (But kenneth may have already looked at this) So depending on how accurate the validation needs to be - this can be very interesting validation problem. One can always take simplistic view - if the requirements are fulfilled. -Mandar _______________________________________________ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
