Time Processing in Python -- timedelta

#  ! /Usr/bin/Python  #  Coding = UTF-8  From Datetime Import  Datetime, timedelta  """  Timedelta indicates the time difference between two datetime values.  """  Now = Datetime. Now () past = Past = datetime (2010,11, 16 ) Timespan = Now- Past #  This produces a negative number. Past- Nowattrs = [(  "  Days  " , "  Day  " ),( '  Seconds  ' , "  Seconds  " ),('  Microseconds  ' , "  Millisecond  "  )  #  ('Min', "min"), ('max ', "Max "),  ]  For K, V In  Attrs:  "  Timespan. % s = % s # % s  " %(K, getattr (timespan, k), V)  """  Total number of seconds of difference  """  Timespan. total_seconds ()  """  To instantiate a timespan, pay attention to its Parameter order timedelta ([days [, seconds [, microseconds [, milliseconds [, minutes [, hours [, weeks]).  """  Timespan = Timedelta (days = 1 ) Now -Timespan #  The return value is of the datetime type. Now + Timespantimespan * 2#  You can also take a ride. Represents 2x Timespan/13 #  Add one month  From Calendar Import  Monthrangenow + Timedelta (days = monthrange (start. Year, start. month) [1])