class CompositeTime(*args, **kwargs)[source]

Bases: obspy.core.event.base.__CompositeTime

Focal times differ significantly in their precision. While focal times of instrumentally located earthquakes are estimated precisely down to seconds, historic events have only incomplete time descriptions. Sometimes, even contradictory information about the rupture time exist. The CompositeTime type allows for such complex descriptions. If the specification is given with no greater accuracy than days (i.e., no time components are given), the date refers to local time. However, if time components are given, they have to refer to UTC.

  • year (int) Year or range of years of the event’s focal time.
  • year_errors (QuantityError) AttribDict containing error quantities.
  • month (int) Month or range of months of the event’s focal time.
  • month_errors (QuantityError) AttribDict containing error quantities.
  • day (int) Day or range of days of the event’s focal time.
  • day_errors (QuantityError) AttribDict containing error quantities.
  • hour (int) Hour or range of hours of the event’s focal time.
  • hour_errors (QuantityError) AttribDict containing error quantities.
  • minute (int) Minute or range of minutes of the event’s focal time.
  • minute_errors (QuantityError) AttribDict containing error quantities.
  • second (float) Second and fraction of seconds or range of seconds with fraction of the event’s focal time.
  • second_errors (QuantityError) AttribDict containing error quantities.
>>> print(CompositeTime(2011, 1, 1))
CompositeTime(year=2011, month=1, day=1)
>>> # Can also be instantiated with the uncertainties.
>>> print(CompositeTime(year=2011, year_errors={"uncertainty":1}))
CompositeTime(year=2011 [uncertainty=1])


For handling additional information not covered by the QuakeML standard and how to output it to QuakeML see the ObsPy Tutorial.


__abstractmethods__ frozenset() -> empty frozenset object
__doc__ str(object=’‘) -> str
__module__ str(object=’‘) -> str
__slots__ tuple() -> empty tuple
__weakref__ list of weak references to the object (if defined)
defaults dict() -> new empty dictionary
do_not_warn_on list() -> new empty list
item tuple() -> empty tuple
key str(object=’‘) -> str
readonly list() -> new empty list
warn_on_non_default_key bool(x) -> bool

Public Methods

pop If key is not found, d is returned if given, otherwise KeyError is raised.
popitem as a 2-tuple; but raise KeyError if D is empty.

Private Methods


Private methods are mainly for internal/developer use and their API might change without notice.

_pretty_str Return better readable string representation of AttribDict object.

Special Methods

__dir__ default dir() implementation
__eq__ Two instances are considered equal if all attributes and all lists
__format__ default object formatter
__getattr__ Py3k hasattr() expects an AttributeError no KeyError to be
__new__ Create and return a new object.
__reduce__ helper for pickle
__reduce_ex__ helper for pickle
__setattr__ Custom property implementation that works if the class is
__sizeof__ size of object in memory, in bytes
__str__ Fairly extensive in an attempt to cover several use cases.