17.1.1.1.1.3. `cobra.core.formula`¶

17.1.1.1.1.3.1. Module Contents¶

17.1.1.1.1.3.1.1. Classes¶

Describes a Chemical Formula

cobra.core.formula.element_re[source]¶

class cobra.core.formula.Formula(formula=None)[source]¶

Bases: cobra.core.object.Object

Describes a Chemical Formula

Parameters: formula (string) – A legal formula string contains only letters and numbers.

__add__(self, other_formula)[source]¶

Combine two molecular formulas.

Parameters: other_formula (Formula, str) – string for a chemical formula
Returns: The combined formula
Return type: Formula

parse_composition(self)[source]¶: Breaks the chemical formula down by element.

property weight(self)[source]¶

Calculate the mol mass of the compound

Returns: the mol mass
Return type: float

cobra.core.formula.elements_and_molecular_weights[source]¶