Convert seconds to hh mm ss in Python

Question

How do I convert an int  number of seconds  to the formats mm ss or hh mm ss   I need to do this with Python code  and if possible in a Django template

User · Answer

Read up on the datetime module   SilentGhost s answer has the details my answer leaves out and is reposted here    gt  gt  gt  a   datetime timedelta seconds 65  datetime timedelta 0  65   gt  gt  gt  str a   0 01 05

User · Answer

Not being a Python person  but the easiest without any libraries is just   total     3800 seconds   total   60 total     total - seconds hours     total   3600 total     total -  hours   3600  mins      total   60

User · Answer

Besides the fact that Python has built in support for dates and times  see bigmattyh s response   finding minutes or hours from seconds is easy   minutes   seconds   60 hours   minutes   60   Now  when you want to display minutes or seconds  MOD them by 60 so that they will not be larger than 59

User · Answer

You can calculate the number of minutes and hours from the number of seconds by simple division   seconds   12345 minutes   seconds    60 hours   minutes    60  print   02d  02d  02d     hours  minutes   60  seconds   60  print   02d  02d     minutes  seconds   60    Here    is Python s integer division

User · Answer

If you use divmod  you are immune to different flavors of integer division    show time strings for 3800 seconds    easy way to get mm ss print  quot  02d  02d quot    divmod 3800  60     easy way to get hh mm ss print  quot  02d  02d  02d quot          reduce lambda ll b   divmod ll 0  b    ll 1              3800   60 60       function to convert floating point number of seconds to   hh mm ss sss def secondsToStr t       return  quot  02d  02d  02d  03d quot              reduce lambda ll b   divmod ll 0  b    ll 1                  round t 1000    1000 60 60    print secondsToStr 3800 123   Prints  63 20 01 03 20 01 03 20 123

User · Answer

If you need to do this a lot  you can precalculate all possible strings for number of seconds in a day  try      from itertools import product except ImportError      def product  seqs           if len seqs     1              for p in seqs 0                   yield p          else              for s in seqs 0                   for p in product  seqs 1                         yield  s     p  hhmmss      for  h  m  s  in product range 24   range 60   range 60        hhmmss append  quot  02d  02d  02d quot     h  m  s    Now conversion of seconds to format string is a fast indexed lookup  print hhmmss 12345   prints  03 25 45   EDIT  Updated to 2020  removing Py2 compatibility ugliness  and f-strings  import sys from itertools import product   hhmmss    f quot  h 02d   m 02d   s 02d  quot               for h  m  s in product range 24   range 60   range 60       we can still just index into the list  but define as a function   for common API with code below seconds to str   hhmmss   getitem    print seconds to str 12345    How much memory does this take  sys getsizeof of a list won t do  since it will just give us the size of the list and its str refs  but not include the memory of the strs themselves    how big is a list of 24 60 60 8-character strs  list size   sys getsizeof hhmmss    sum sys getsizeof s  for s in hhmmss  print  quot      quot  format list size    prints  5 657 616  What if we just had one big str  Every value is exactly 8 characters long  so we can slice into this str and get the correct str for second X of the day  hhmmss str      join  f quot  h 02d   m 02d   s 02d  quot                        for h  m  s in product range 24                                                range 60                                                range 60     def seconds to str n       loc   n   8     return hhmmss str loc  loc 8   print seconds to str 12345    Did that save any space    how big is a str of 24 60 60 8 characters  str size   sys getsizeof hhmmss str  print  quot      quot  format str size    prints  691 249  Reduced to about this much  print str size   list size   prints  0 12218026108523448  On the performance side  this looks like a classic memory vs  CPU tradeoff  import timeit  print  quot  nindex into pre-calculated list quot   print timeit timeit  quot hhmmss 6  quot      from itertools import product  hhmmss    f quot  h 02d   m 02d   s 02d  quot                       for h  m  s in product range 24                                                range 60                                                range 60         print  quot  nget slice from pre-calculated str quot   print timeit timeit  quot hhmmss str 6 8 7 8  quot      from itertools import product  hhmmss str    join  f quot  h 02d   m 02d   s 02d  quot                       for h  m  s in product range 24                                                range 60                                                range 60           print  quot  nuse datetime timedelta from stdlib quot   print timeit timeit  quot timedelta seconds 6  quot    quot from datetime import timedelta quot    print  quot  ninline compute of h  m  s using divmod quot   print timeit timeit  quot n 6 m s divmod n 60  h m divmod m 60  f  h 02d   m 02d   s 02d   quot     On my machine I get  index into pre-calculated list 0 0434853  get slice from pre-calculated str 0 1085147  use datetime timedelta from stdlib 0 7625738  inline compute of h  m  s using divmod 2 0477764

User · Answer

Just be careful when dividing by 60  division between integers returns an integer -  12 60   0 unless you import division from future  The following is copy and pasted from Python 2 6 2   IDLE 2 6 2        gt  gt  gt  12 60 0  gt  gt  gt  from   future   import division  gt  gt  gt  12 60 0 20000000000000001

User · Answer

gt  gt  gt  a   datetime timedelta seconds 65  datetime timedelta 0  65   gt  gt  gt  str a   0 01 05

User · Answer

Code that does what was requested  with examples  and showing how cases he didn t specify are handled   def format seconds to hhmmss seconds       hours   seconds     60 60      seconds     60 60      minutes   seconds    60     seconds    60     return   02i  02i  02i     hours  minutes  seconds   def format seconds to mmss seconds       minutes   seconds    60     seconds    60     return   02i  02i     minutes  seconds   minutes   60 hours   60 60 assert format seconds to mmss 7 minutes   30      07 30  assert format seconds to mmss 15 minutes   30      15 30  assert format seconds to mmss 1000 minutes   30      1000 30   assert format seconds to hhmmss 2 hours   15 minutes   30      02 15 30  assert format seconds to hhmmss 11 hours   15 minutes   30      11 15 30  assert format seconds to hhmmss 99 hours   15 minutes   30      99 15 30  assert format seconds to hhmmss 500 hours   15 minutes   30      500 15 30    You can--and probably should--store this as a timedelta rather than an int  but that s a separate issue and timedelta doesn t actually make this particular task any easier

User · Answer

I can t believe any of the many answers gives what I d consider the  one obvious way to do it   and I m not even Dutch    -  -- up to just below 24 hours  worth of seconds  86399 seconds  specifically     gt  gt  gt  import time  gt  gt  gt  time strftime   H  M  S   time gmtime 12345    03 25 45    Doing it in a Django template s more finicky  since the time filter supports a funky time-formatting syntax  inspired  I believe  from PHP   and also needs the datetime module  and a timezone implementation such as pytz  to prep the data  For example    gt  gt  gt  from django import template as tt  gt  gt  gt  import pytz  gt  gt  gt  import datetime  gt  gt  gt  tt Template     x time  H i s       render          tt Context   x   datetime datetime fromtimestamp 12345  pytz utc     u 03 25 45    Depending on your exact needs  it might be more convenient to define a custom filter for this formatting task in your app

[python] Convert seconds to hh:mm:ss in Python

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