How do you calculate minutes in python?

I have a task in which i need to calculate the runtime of a marathon. I'm given this as a start point

start_hour = 3
start_minute = 48
length = 172

Basically the start is at 3:48 and it continues for 172 minutes. My task is to find when the marathon ends.The endtime should look like this format 3:48 with minutes and hour converted to string and put together with ":". I have spent like 1 and a half hour and i still can't manage to solve it. This is what i have come out with:

endhour = start_hour + [length // 60] 
endminute = start_minute + [length % 60]
end_minutee = endminute % 60
format[endhour]
endhourAsStr = str[endhour]
end_minuteeAsStr = str[end_minutee]
print[endhourAsStr + ":" + end_minuteeAsStr]

But when i print the final hour is shorter then it should be with 1 hour. I'm guessing that i need to do something with the > or < but i really can't figure it out.I guess that i only need that final push. offtopic: I'm very new to proggraming i don't have experience whatsoever.

asked Aug 14, 2017 at 11:42

You can use some datetime trickery to get a guaranteed correct result:

start_hour = 3
start_minute = 48
length = 172

start = datetime.datetime[100, 1, 1, start_hour, start_minute, 0]
end = start + datetime.timedelta[minutes=length]
result = str[end.time[]]

If you want to get rid of the :00 seconds at the end, simply modify the last line:

result = end.strftime['%H:%M']

I prefer this approach because it accounts for edge cases like starting one day near midnight and ending in the next day.

answered Aug 14, 2017 at 11:50

4

I would suggest

endhour = start_hour + [length // 60] 
endminute = start_minute + [length % 60]
endhour += endminute // 60
endminute = endminute % 60
endhour = endhour % 24 

print['{}:{}'.format[endhour, endminute]]

After initializing the end hour and minute as you did, you extract again the minutes and hours from the end minutes.

Finally, you adjust the hours to be between 0 and 23.

answered Aug 14, 2017 at 11:46

UrielUriel

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How about keeping everything in minutes and then working out the output as intended later? Keeping it simple to understand and read :]

start_time = start_hour*60 + start_minute
end_time = start_time + length
end_hour, end_minute = end_time // 60, end_time % 60
print['{}:{}'.format[end_hour, end_minute]]
# 6:40

answered Aug 14, 2017 at 11:50

shad0w_wa1k3rshad0w_wa1k3r

12.6k8 gold badges65 silver badges88 bronze badges

Use divmod.

start_hour = 3
start_minute = 48
length = 172

elapsed_hours, elapsed_minutes = divmod[length, 60]
extra_hour, finish_minute = divmod[start_minute + elapsed_minutes, 60]
finish_hour = start_hour + elapsed_hours + extra_hour
print["{hour}:{minute}".format[hour=finish_hour, minute=finish_minute]]

This assumes that you don't expect anyone to finish after midnight/the next day. If you want to account for that possibility you can take the modulus of finish_hour with 24.

answered Aug 14, 2017 at 12:07

BatmanBatman

8,3077 gold badges39 silver badges76 bronze badges

let's keep it simple

hour = int[input["Starting time [hours]: "]]
mins = int[input["Starting time [minutes]: "]]
dura = int[input["Event duration [minutes]: "]]

print[[[[hour*60+mins+dura]//60]%24] , ":" , [[mins+dura]%60] , sep=""]

or

hour = int[input["Starting time [hours]: "]]
mins = int[input["Starting time [minutes]: "]]
dura = int[input["Event duration [minutes]: "]]

endmins = [mins+dura]%60
endhours = [[hour*60 + mins + dura]//60]%24
print[endhours , ":" , endmins , sep=""]

answered Apr 19, 2020 at 12:09

Keeping it simple! :]

hour = int[input["Starting time [hours]: "]]

mins = int[input["Starting time [minutes]: "]]

dura = int[input["Event duration [minutes]: "]]

endmin=[mins+dura]%60

endhour=[[[hour*60]+mins+dura]//60]%24

print[endhour,":",endmin]

answered Mar 23, 2020 at 14:19

1

Keep it short and simple

st_hour = int[input["What's the start time in hours ?"]]
st_min = int[input["What's the start time in mins ?"]]
du_time = int[input["What's the duration time in mins ?"]]

end_hour = [st_hour + [st_min + du_time]//60]%24
end_mins = [st_min + du_time]%60

print[]
print["The end time = ", end_hour, ":", end_mins]

answered Dec 10, 2020 at 15:27

hour = int[input["Starting time [hours]: "]]
mins = int[input["Starting time [minutes]: "]]
dura = int[input["Event duration [minutes]: "]]
new_hour=int[[hour+round[[dura/60]]]%12]
new_mins=int[[mins+[dura%60]]%60]
print[new_hour,":",new_mins]

Suraj Rao

29.1k11 gold badges95 silver badges100 bronze badges

answered Feb 12 at 8:05

1

start_hour = int[input["Starting time [hours]: "]]
start_minute = int[input["Starting time [minutes]: "]]
length = int[input["Event duration [minutes]: "]]
#Calculating hours and minutes in python
end_hour = [start_hour + [[start_minute + length]//60]]%24
end_mins = [start_minute + length]%60
print[end_hour,end_mins,sep=":"]

This may helps

answered Feb 17 at 22:11

1

I suggest the following,

endhour=[start_hour*60+start_minute+length]%1440
endhour//=60
endmin=[start_minute+length]%60
print[endhour,":",endmin]

think is much simple solution :]

answered Apr 11, 2020 at 23:13

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