diff options
| -rw-r--r-- | mdpoly/abc.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mdpoly/abc.py b/mdpoly/abc.py index 6ec1712..c503029 100644 --- a/mdpoly/abc.py +++ b/mdpoly/abc.py @@ -23,7 +23,10 @@ class Expr(Protocol): @property @abstractmethod def shape(self) -> Shape: - """ Computes the shape of the expression. """ + """ Computes the shape of the expression. This method is also used to + check if the operation described by *Expr* can be perfomed with *left* + and *right*. If the shape cannot be computed because of an algebraic + problem raises :py:class:`mdpoly.errors.AlgebraicError`. """ def __repr__(self): name = self.__class__.__qualname__ |