QgsCoordinateReferenceSystem Class (PyQGIS)

Python 2.7.4 (default, Apr  6 2013, 19:54:46) [MSC v.1500 32 bit (Intel)] on zeito
## Type help(iface) for more info and list of methods.
help(QgsCoordinateReferenceSystem)
Help on class QgsCoordinateReferenceSystem in module qgis.core:

class QgsCoordinateReferenceSystem(sip.wrapper)
 |  QgsCoordinateReferenceSystem()
 |  QgsCoordinateReferenceSystem(QString)
 |  QgsCoordinateReferenceSystem(int, QgsCoordinateReferenceSystem.CrsType theType=QgsCoordinateReferenceSystem.PostgisCrsId)
 |  QgsCoordinateReferenceSystem(QgsCoordinateReferenceSystem)
 |
 |  Method resolution order:
 |      QgsCoordinateReferenceSystem
 |      sip.wrapper
 |      sip.simplewrapper
 |      __builtin__.object
 |
 |  Methods defined here:
 |
 |  __eq__(...)
 |      x.__eq__(y) <==> x==y
 |
 |  __ge__(...)
 |      x.__ge__(y) <==> x>=y
 |
 |  __gt__(...)
 |      x.__gt__(y) <==> x>y
 |
 |  __le__(...)
 |      x.__le__(y) <==> x<=y
 |
 |  __lt__(...)
 |      x.__lt__(y) <==> x<y
 |
 |  __ne__(...)
 |      x.__ne__(y) <==> x!=y
 |
 |  authid(...)
 |      QgsCoordinateReferenceSystem.authid() -> QString
 |
 |  axisInverted(...)
 |      QgsCoordinateReferenceSystem.axisInverted() -> bool
 |
 |  createFromId(...)
 |      QgsCoordinateReferenceSystem.createFromId(int, QgsCoordinateReferenceSystem.CrsType theType=QgsCoordinateReferenceSystem.PostgisCrsId) -> bool
 |
 |  createFromOgcWmsCrs(...)
 |      QgsCoordinateReferenceSystem.createFromOgcWmsCrs(QString) -> bool
 |
 |  createFromProj4(...)
 |      QgsCoordinateReferenceSystem.createFromProj4(QString) -> bool
 |
 |  createFromSrid(...)
 |      QgsCoordinateReferenceSystem.createFromSrid(int) -> bool
 |
 |  createFromSrsId(...)
 |      QgsCoordinateReferenceSystem.createFromSrsId(int) -> bool
 |
 |  createFromString(...)
 |      QgsCoordinateReferenceSystem.createFromString(QString) -> bool
 |
 |  createFromUserInput(...)
 |      QgsCoordinateReferenceSystem.createFromUserInput(QString) -> bool
 |
 |  createFromWkt(...)
 |      QgsCoordinateReferenceSystem.createFromWkt(QString) -> bool
 |
 |  description(...)
 |      QgsCoordinateReferenceSystem.description() -> QString
 |
 |  ellipsoidAcronym(...)
 |      QgsCoordinateReferenceSystem.ellipsoidAcronym() -> QString
 |
 |  findMatchingProj(...)
 |      QgsCoordinateReferenceSystem.findMatchingProj() -> int
 |
 |  geographicCRSAuthId(...)
 |      QgsCoordinateReferenceSystem.geographicCRSAuthId() -> QString
 |
 |  geographicFlag(...)
 |      QgsCoordinateReferenceSystem.geographicFlag() -> bool
 |
 |  isValid(...)
 |      QgsCoordinateReferenceSystem.isValid() -> bool
 |
 |  mapUnits(...)
 |      QgsCoordinateReferenceSystem.mapUnits() -> QGis.UnitType
 |
 |  postgisSrid(...)
 |      QgsCoordinateReferenceSystem.postgisSrid() -> int
 |
 |  projectionAcronym(...)
 |      QgsCoordinateReferenceSystem.projectionAcronym() -> QString
 |
 |  readXML(...)
 |      QgsCoordinateReferenceSystem.readXML(QDomNode) -> bool
 |
 |  saveAsUserCRS(...)
 |      QgsCoordinateReferenceSystem.saveAsUserCRS(QString) -> bool
 |
 |  setValidationHint(...)
 |      QgsCoordinateReferenceSystem.setValidationHint(QString)
 |
 |  setupESRIWktFix(...)
 |      QgsCoordinateReferenceSystem.setupESRIWktFix()
 |
 |  srsid(...)
 |      QgsCoordinateReferenceSystem.srsid() -> int
 |
 |  syncDb(...)
 |      QgsCoordinateReferenceSystem.syncDb() -> int
 |
 |  toProj4(...)
 |      QgsCoordinateReferenceSystem.toProj4() -> QString
 |
 |  toWkt(...)
 |      QgsCoordinateReferenceSystem.toWkt() -> QString
 |
 |  validate(...)
 |      QgsCoordinateReferenceSystem.validate()
 |
 |  validationHint(...)
 |      QgsCoordinateReferenceSystem.validationHint() -> QString
 |
 |  writeXML(...)
 |      QgsCoordinateReferenceSystem.writeXML(QDomNode, QDomDocument) -> bool
 |
 |  ----------------------------------------------------------------------
 |  Data descriptors defined here:
 |
 |  __weakref__
 |      list of weak references to the object (if defined)
 |
 |  ----------------------------------------------------------------------
 |  Data and other attributes defined here:
 |
 |  CrsType = <class 'qgis.core.CrsType'>
 |
 |
 |  EpsgCrsId = 2
 |
 |  InternalCrsId = 0
 |
 |  PostgisCrsId = 1
 |
 |  ----------------------------------------------------------------------
 |  Methods inherited from sip.simplewrapper:
 |
 |  __init__(...)
 |      x.__init__(...) initializes x; see help(type(x)) for signature
 |
 |  ----------------------------------------------------------------------
 |  Data descriptors inherited from sip.simplewrapper:
 |
 |  __dict__
 |
 |  ----------------------------------------------------------------------
 |  Data and other attributes inherited from sip.simplewrapper:
 |
 |  __new__ = <built-in method __new__ of sip.wrappertype object>
 |      T.__new__(S, ...) -> a new object with type S, a subtype of T