Hi
I am trying to build a simple model of a gas field. At the moment I have
these objects:
GasWell represents the behaviour of a gas well
GasFluid represents the thermodynamic behaviour of the gas
GasField represents the field itself
The GasField object defines properties such as pressure and volume. The
fluid within it is represented by the GasFluid object which also defines
the properties of the fluid flowing through GasWell objects associated with
a particular GasField. GasWell can be moved from one GasField object to
another, so take the appropriate fluid behaviour from the GasFluid
associated with the GasField to which it belongs.
At the moment, the GasField definition looks something like this
Class GasField(Object):
def __init__(name, pres, vol, fluid, wells):
self.name=name
self.pres=pres
self.vol=vol
self.fluid=fluid # GasFluid object
self.wells=wells # List of GasWell objects
No problems with creating the WELL list since I just append a bunch of
GasWell objects to a new list.
The problem I have is how a particular GasWell knows which field it belongs
to. The only way I can think of so far involves some form of cross
referencing where we define the GasField with an empty WELL list, define
the GasWells by setting the field it belongs to explicitly then updating
the WELL list "externally". For example
wells = []
stuff = GasFluid( params )
field = GasField("My field", p, V, stuff, wells)
well1 = GasWell(params, field)
well2 = GasWell(params, field)
well3 = GasWell(params, field)
wells.append(well1)
wells.append(well2)
wells.append(well2)
new_field.wells = wells
This cross-referencing of GasField and GasWells doesn't seem right to me -
if we move a well from one field to another we have to update the GasWell
object and the GasField.wells list. Is there a more pythonic (or more
sensible) way of doing this?
Thanks in advance
Alun Griffiths
_______________________________________________
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
