# obspy.core.event.base.TimeWindow

class `TimeWindow`(*args, **kwargs)

  Bases: `obspy.core.event.base.__TimeWindow`

  Describes a time window for amplitude measurements, given by a central point in time, and points in time before and after this central point. Both points before and after may coincide with the central point.

  Parameters: | begin (float) Absolute value of duration of time interval before reference point in time window. The value may be zero, but not negative. Unit: s end (float) Absolute value of duration of time interval after reference point in time window. The value may be zero, but not negative. Unit: s reference (`UTCDateTime`) Reference point in time (“central” point).

  Note

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

  Attributes

  `__abstractmethods__` | frozenset() -> empty frozenset object
  `__dict__` |
  `__doc__` | str(object=’‘) -> str
  `__hash__` |
  `__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

  `clear` |
  `copy` |
  `get` |
  `items` |
  `keys` |
  `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.
  `setdefault` |
  `update` |
  `values` |

  Private Methods

  Warning

  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.
  `_repr_pretty_` |

  Special Methods

  `__bool__` |
  `__contains__` |
  `__deepcopy__` |
  `__delattr__` |
  `__delitem__` |
  `__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
  `__getitem__` |
  `__getstate__` |
  `__init__` |
  `__iter__` |
  `__len__` |
  `__ne__` |
  `__new__` | Create and return a new object.
  `__nonzero__` |
  `__reduce__` | helper for pickle
  `__reduce_ex__` | helper for pickle
  `__repr__` |
  `__setattr__` | Custom property implementation that works if the class is
  `__setitem__` |
  `__setstate__` |
  `__sizeof__` | size of object in memory, in bytes
  `__str__` | Fairly extensive in an attempt to cover several use cases.
  `__subclasshook__` |

### Thank you!

We would like to thank our contributors, whose efforts make this software what it is. These people have helped by writing code and documentation, and by testing. They have created and maintained this product, its associated libraries and applications, our build tools and our web sites.

#### Contributors

- Ackerley, Nick
- Allgeyer, Sebastien
- Ammon, Charles J.
- Antunes, Emanuel
- Arnarsson, Ólafur St.
- Bank, Markus
- Barsch, Robert
- Behr, Yannik
- Bernardi, Fabrizio
- Bernauer, Felix
- Bes de Berc, Maxime
- Beyreuther, Moritz
- Boltz, Shawn
- Bonaimé, Sébastien
- Carothers, Lloyd
- Chamberlain, Calum
- Chambers, Derrick
- Chen, Zhao
- Clark, Adam
- Danecek, Peter
- Egdorf, Sven
- Engels, Fabian
- Ermert, Laura
- Eulenfeld, Tom

- Fabbri, Tommaso
- Falco, Nicholas
- Fee, Jeremy
- Grellier, Clément
- Grunberg, Marc
- Hammer, Conny
- Heimann, Sebastian
- Heiniger, Lukas
- Hope, Gaute
- Igel, Heiner
- Inza, Adolfo
- Isken, Marius
- Ketchum, David
- Koymans, Mathijs
- Kremers, Simon
- Kress, Victor
- Krieger, Lars
- Krischer, Lion
- Kula, Damian
- Käufl, Paul
- Köhler, Andreas
- Lecocq, Thomas
- Leeman, John
- Legovini, Paride

- Lesage, Philippe
- Li, Yulin
- Lomax, Anthony
- Lopes, Rui L.
- MacCarthy, Jonathan
- Maggi, Alessia
- Martin, Henri
- Medlin, Andrew
- Megies, Tobias
- Meschede, Matthias
- Michelini, Alberto
- Miller, Nathaniel C.
- Morgenstern, Bernhard
- Nof, Ran Novitsky
- Panning, Mark P.
- Parker, Tom
- Pestourie, Romain
- Rapagnani, Giovanni
- Reyes, Celso
- Ringler, Adam
- Rothenhäusler, Nicolas
- Russo, Emiliano
- Sales de Andrade, Elliott

- Satriano, Claudio
- Saul, Joachim
- Scheingraber, Chris
- Schneider, Simon
- Sippl, Christian
- Snoke, Arthur
- Stange, Stefan
- Stähler, Simon C.
- Sullivan, Benjamin
- Tian, Dongdong
- Trabant, Chad
- Trani, Luca
- Uieda, Leonardo
- Walker, Andrew
- Walther, Marcus
- Wassermann, Joachim
- Williams, Mark C.
- Winkelman, Andrew
- Zaccarelli, Riccardo
- Zad, Seyed Kasra Hosseini
- Zhu, Lijun
- van Driel, Martin
- van Wijk, Kasper

#### Funds

ObsPy was partially funded by the

- German Science Foundation (DFG) via grant DFG IG 16/9-1
- German Ministry for Education and Research (BMBF), GEOTECHNOLOGIEN grant 03G0646H.
- NERA project (Network of European Research Infrastructures for Earthquake Risk Assessment and Mitigation) under the European Community's Seventh Framework Programme (FP7/2007-2013) grant agreement n° 262330
- Leibniz Institute for Applied Geophysics (LIAG)
- VERCE EU-FP7 project (no. 283543)