Better initialization of Rational

[linpy.git] / pypol / polyhedra.py

diff --git a/pypol/polyhedra.py b/pypol/polyhedra.py
index fe143d4..b0b5d0e 100644 (file)
--- a/pypol/polyhedra.py
+++ b/pypol/polyhedra.py
@@ -56,23 +56,23 @@ class Polyhedron(Domain):
 
     @property
     def equalities(self):
-    """
-    Return a list of the equalities in a set.
-    """
+        """
+        Return a list of the equalities in a set.
+        """
         return self._equalities
 
     @property
     def inequalities(self):
-    """
-    Return a list of the inequalities in a set.
-    """
+        """
+        Return a list of the inequalities in a set.
+        """
         return self._inequalities
 
     @property
     def constraints(self):
-    """
-    Return ta list of the constraints of a set.
-    """
+        """
+        Return ta list of the constraints of a set.
+        """
         return self._constraints
 
     @property
@@ -115,9 +115,10 @@ class Polyhedron(Domain):
         return True
 
     def subs(self, symbol, expression=None):
-    """
-    Subsitute the given value into an expression and return the resulting expression.
-    """
+        """
+        Subsitute the given value into an expression and return the resulting
+        expression.
+        """
         equalities = [equality.subs(symbol, expression)
             for equality in self.equalities]
         inequalities = [inequality.subs(symbol, expression)
@@ -242,18 +243,18 @@ class Polyhedron(Domain):
 
     @classmethod
     def fromsympy(cls, expr):
-    """
-    Convert a sympy object to an expression.
-    """
+        """
+        Convert a sympy object to an expression.
+        """
         domain = Domain.fromsympy(expr)
         if not isinstance(domain, Polyhedron):
             raise ValueError('non-polyhedral expression: {!r}'.format(expr))
         return domain
 
     def tosympy(self):
-    """
-    Return an expression as a sympy object. 
-    """
+        """
+        Return an expression as a sympy object.
+        """
         import sympy
         constraints = []
         for equality in self.equalities: