terms.call_resolver.LazyVariable

terms.call_resolver.LazyVariable(name)

Deferred variable reference.

The variable represented in this object does not hold any value until it is explicitly evaluated within a data mask and an evaluation environment.

Parameters

name : str

The name of the variable it represents.

Methods

Name	Description
eval	Evaluates variable.

eval

terms.call_resolver.LazyVariable.eval(data_mask, env)

Evaluates variable.

First it looks for the variable in data_mask. If not found there, it looks in env. Then it just returns the value the variable represents in either the data mask or the evaluation environment.

Parameters

data_mask : pd.DataFrame

The data frame where variables are taken from

env : Environment

The environment where values and functions are taken from.

Returns

result :

The value represented by this name in either the data mask or the environment.