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## [Tutor] count numbers only in the string

 Hi : I have some strings with both alpha-numeric strings. I want to add all the numbers in that string and leave characters and special characters.  1A0G19 5G0C25^C52 0G2T3T91 44^C70 How can I count only the numbers in the above.  1 A 0 G 19       =    1+0+19 = 20 5 G 0 C 25 ^C 52  =   5+0+25+52 = 82 0 G 2 T 3 T 91    =  0+2+3+91 =  96 44 ^C 70   =   44+70 =  114  In first string 1A0G19  I am only adding 1, 0, and 19.    I am not splitting 19 to add 1+9 which will give totally wrong answer for me. Is there a way I can do this.  Thanks for your advise.  kumar _______________________________________________ Tutor maillist  -  [hidden email] To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
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## Re: [Tutor] count numbers only in the string

 > -----Original Message----- > From: tutor-bounces+ramit.prasad=[hidden email] [mailto:tutor- > bounces+ramit.prasad=[hidden email]] On Behalf Of kumar s > Sent: Tuesday, March 06, 2012 2:08 PM > To: [hidden email] > Subject: [Tutor] count numbers only in the string > > Hi : > > I have some strings with both alpha-numeric strings. I want to add all the > numbers in that string and leave characters and special characters. > 1A0G19 > > 5G0C25^C52 > > 0G2T3T91 > 44^C70 > > How can I count only the numbers in the above. > > 1 A 0 G 19       =    1+0+19 = 20 > > 5 G 0 C 25 ^C 52  =   5+0+25+52 = 82 > > 0 G 2 T 3 T 91    =  0+2+3+91 =  96 > 44 ^C 70   =   44+70 =  114 > >  In first string 1A0G19  I am only adding 1, 0, and 19.    I am not > splitting 19 to add 1+9 which will give totally wrong answer for me. > > > Is there a way I can do this. > > Thanks for your advise. > > kumar > There might be a better way, but you can use regular expressions. >>> match = re.search( '(\d+)A(\d+)G(\d+)', '1A0G19' ) >>> map(int, match.groups() ) [1, 0, 19] >>> sum( _ ) 20 Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -- This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email.   _______________________________________________ Tutor maillist  -  [hidden email] To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
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## Re: [Tutor] count numbers only in the string

 In reply to this post by kumar s On Tue, Mar 6, 2012 at 3:07 PM, kumar s <[hidden email]> wrote: > Hi : > > I have some strings with both alpha-numeric strings. I want to add all the numbers in that string and leave characters and special characters. > 1A0G19 > > 5G0C25^C52 > > 0G2T3T91 > 44^C70 > > How can I count only the numbers in the above. > > 1 A 0 G 19       =    1+0+19 = 20 > > 5 G 0 C 25 ^C 52  =   5+0+25+52 = 82 > > 0 G 2 T 3 T 91    =  0+2+3+91 =  96 > 44 ^C 70   =   44+70 =  114 > >  In first string 1A0G19  I am only adding 1, 0, and 19.    I am not splitting 19 to add 1+9 which will give totally wrong answer for me. > > > Is there a way I can do this. > > Thanks for your advise. > > kumar > > _______________________________________________ > Tutor maillist  -  [hidden email] > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutorI am pretty much a novice with regular expressions, but this seems to work to find all the numeric sequences: >>> source = 'ab123t&4533www' >>> re.findall('\d*', source) ['', '', '123', '', '', '4533', '', '', '', ''] >>> so then something like this: total = 0 my_list = re.findall('\d*', source) for my_number in my_list:     if my_number != ''         total += int(my_number) -- Joel Goldstick _______________________________________________ Tutor maillist  -  [hidden email] To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor