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A little help with time calculations

 P: n/a I am trying to make a very simple program and am very new to the whole programming thing. my program is supposed to ask a user for any time in the for format XX:XX:XX and then ask for a time corrrection to add or subtract to this. my only problem is that once the user inputs the time and the correction its adding it like it was 100 not to 60 any help? Oct 18 '05 #1
5 Replies

 P: n/a iminal wrote: I am trying to make a very simple program and am very new to the whole programming thing. my program is supposed to ask a user for any time in the for format XX:XX:XX and then ask for a time corrrection to add or subtract to this. my only problem is that once the user inputs the time and the correction its adding it like it was 100 not to 60 any help? Without code, nobody can help you. Regards, Diez Oct 18 '05 #2

 P: n/a iminal wrote: I am trying to make a very simple program and am very new to the whole programming thing. my program is supposed to ask a user for any time in the for format XX:XX:XX and then ask for a time corrrection to add or subtract to this. my only problem is that once the user inputs the time and the correction its adding it like it was 100 not to 60 any help? If you're new to programming you may not yet have realised that many problems come down to finding appropriate representations for things. Since you want to do arithmetic on times, why not store them as seconds? Then you just need to work out how to convert times to seconds, and seconds to times - Python's arithmetic will do the rest. See if you can make anything of these functions (which I haven't tested, so you're allowed to complain if they don't work ;-): def timetosecs(s): hms = s.split(":") # [hh, mm, ss] secs = 0 for t in hms: secs = secs * 60 + int(t) return secs def secstotime(secs): hms = [] while secs: hms.append(str(secs % 60)) secs = secs // 60 return ":".join(hms) regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ Oct 18 '05 #3

 P: n/a what i have so far is : # Get values needed to make time calculations CT = input("input your chronometer time (ex. 07:21:46): ") CE = input("input your chronometer correction (ex. 00:01:32): ") CEfastslow = raw_input("is your chronometer correction fast or slow: ") #decide either to subtract or add CE from/to CT if CEfastslow == "fast": CEfastslow = CT - CE if CEfastslow == "slow": CEfastslow = CT + CE but this just doesnt deal with the numbers in time format its acting like they are just regualr integers adding them up like regular numbers i am trying to figure out what u posted and it seems a little complicated im trying to add it in somehow and figure out exactly what its doing but still looking for a little easier of a way thanks so far Oct 18 '05 #4