17.1.1.1.1.3. `cobra.core.formula`¶

Provide a class representing a chemical formula.

17.1.1.1.1.3.1. Module Contents¶

17.1.1.1.1.3.1.1. Classes¶

Describe a chemical formula.

cobra.core.formula.element_re[source]¶

class cobra.core.formula.Formula(formula: Optional[str] = None, **kwargs)[source]¶

Bases: cobra.core.object.Object

Describe a chemical formula.

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

__add__(self, other_formula: Union['Formula', str]) → 'Formula'[source]¶

Combine two molecular formulas.

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

parse_composition(self) → None[source]¶: Break the chemical formula down by element.

property weight(self) → float[source]¶

Calculate the mol mass of the compound.

Returns: the mol mass
Return type: float

cobra.core.formula.elements_and_molecular_weights[source]¶