Class ParameterDict

source code

A dictionary with attribute-style access,
that maps attribute access to the real dictionary.

Interactive example:
>>> m = ParameterDict(Re = 1.0, f = "sin(x)")
>>> print m
Re = 1.0
f = 'sin(x)'
>>> s = ParameterDict(max_iterations = 10, tolerance = 1e-8)
>>> print s
max_iterations = 10
tolerance = 1e-08
>>> p = ParameterDict(model = m, solver = s)
>>> print p
model = {
    Re = 1.0
    f = 'sin(x)'
}
solver = {
    max_iterations = 10
    tolerance = 1e-08
}
>>> q = p.copy()
>>> q.model.Re = 2.3e6
>>> q.solver.max_iterations = 100
>>> print q
model = {
    Re = 2300000.0
    f = 'sin(x)'
}
solver = {
    max_iterations = 100
    tolerance = 1e-08
}
>>> print p
model = {
    Re = 1.0
    f = 'sin(x)'
}
solver = {
    max_iterations = 10
    tolerance = 1e-08
}
>>> p.update(q)
>>> print p
model = {
    Re = 2300000.0
    f = 'sin(x)'
}
solver = {
    max_iterations = 100
    tolerance = 1e-08
}
>>> s.nothere = 123
Traceback (most recent call last):
  File "doctest.py", line 1212, in __run
    compileflags, 1) in test.globs
  File "<doctest __main__.ParameterDict[13]>", line 1, in <module>
    s.nothere = 123
  File "ParameterDict.py", line 107, in __setattr__
    raise AttributeError("%s is not an item in this parameter dict." % key)
AttributeError: nothere is not an item in this parameter dict.

new empty dictionary