Python Interface to MAPL: Difference between revisions
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mapl.go() | mapl.go() | ||
== A python component with Children in Fortran == | == A python component with Children implemented in Fortran == | ||
In this example, the '''GEOSgcs''' component is implemented in Python, with its children, components '''ANA''' and '''GCM''', implemented in Fortran. | In this example, the '''GEOSgcs''' component is implemented in Python, with its children, components '''ANA''' and '''GCM''', implemented in Fortran. | ||
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Notice that the standard '''Initialize()''', '''Run()''' and '''Finalize()''' methods are inherited from the base class '''MAPL.GridComp'''. | Notice that the standard '''Initialize()''', '''Run()''' and '''Finalize()''' methods are inherited from the base class '''MAPL.GridComp'''. | ||
== A python component with Children implemented in Python == | |||
In this example, the '''GEOSgcs''' component is implemented in Python, with its children, components '''ANA''' and '''GCM''', also implemented in Python. | |||
In this case we implement the standard '''Run()''' method, but inherit '''Initialize()''' and '''Finalize()''' from the base class '''MAPL.GridComp''' | |||
import MAPL | |||
import GEOSana | |||
import GEOSgcm | |||
class GridComp(MAPL.GridComp): | |||
""" | |||
Implements the GEOSgcs component by subclassing MAPL.GridComp. | |||
""" | |||
def SetServices(self): | |||
""" | |||
SetServices for a composite component. | |||
""" | |||
# Instantiate Children component | |||
# ------------------------------ | |||
ana = GEOSana() | |||
gcm = GEOSgcm() | |||
# Adopt children | |||
# -------------- | |||
self.AddChild(ana) | |||
self.AddChild(gcm) | |||
# Set connectivity among children | |||
# ------------------------------- | |||
vars = ('Tinc', 'Sinc', 'Uinc', 'Vinc', 'SSHinc' ) | |||
self.AddConnectivity(src=[ana,vars], dst=[gcm,vars]) | |||
self.AddConnectivity(src=[gcm,'LWI'], dst=[ana,'ORO']) | |||
# Run the base class SetServices | |||
# ------------------------------ | |||
MAPL.GridComp.__SetServices__(self) | |||
def Run(self): | |||
""" | |||
Implementation of a simple run method. | |||
""" | |||
# Run the base class method | |||
# ------------------------- | |||
MAPL.GridComp.__Run__(self) | |||
# Retrieve some data from a state | |||
# ------------------------------- | |||
uwnd, vwnd, = self.Export.GetPointer(['UWND', 'VWND']) | |||
# Just print it | |||
# ------------- | |||
print "u-wind = ", uwnd.min(), uwnd.max() | |||
print "v-wind = ", vwnd.min(), vwnd.max() | |||