heyoka.make_vars

heyoka.make_vars(*args: str) → expression | list[expression]

Create variable expressions from strings.

This function will return one or more expression instances containing variables constructed from the input arguments. If a single argument is supplied, a single expression is returned. Otherwise, a list of expressions (one for each argument) is returned.

Parameters:

args – the input string(s).

Returns:

one or more expressions constructed from args.

Raises:

ValueError – if the number of args is zero.

Examples:

>>> from heyoka import make_vars
>>> x = make_vars("x")
>>> y, z = make_vars("y", "z")