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Conditions describing the composition of a material.


class pyhmsa.spec.condition.composition.CompositionElemental(unit, values=None, **kwargs)

Defines the composition of a material in terms of its constituent elements. The composition is a dict where the keys are atomic numbers and the values the amounts of an element.

Parameters:unit – unit in which the composition is defined (required)
CLASS = 'Elemental'
TEMPLATE = 'Composition'
clear() → None. Remove all items from D.
get(k[, d]) → D[k] if k in D, else d. d defaults to None.
items() → list of D's (key, value) pairs, as 2-tuples
iteritems() → an iterator over the (key, value) items of D
iterkeys() → an iterator over the keys of D
itervalues() → an iterator over the values of D
keys() → list of D's keys
pop(k[, d]) → v, remove specified key and return the corresponding value.

If key is not found, d is returned if given, otherwise KeyError is raised.

popitem() → (k, v), remove and return some (key, value) pair

as a 2-tuple; but raise KeyError if D is empty.

set_unit(instance, value)
setdefault(k[, d]) → D.get(k,d), also set D[k]=d if k not in D

Returns a CompositionElemental with unit of wt%.


unit in which the composition is defined

update([E, ]**F) → None. Update D from mapping/iterable E and F.

If E present and has a .keys() method, does: for k in E: D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v

values() → list of D's values