X-Git-Url: https://svn.cri.ensmp.fr/git/linpy.git/blobdiff_plain/5541da1f6a0d044cf6ea335d5cf338964310b4ad..ce8dda550018a59520e2d632f10d3fe5650e9d0d:/linpy/geometry.py

diff --git a/linpy/geometry.py b/linpy/geometry.py
index 0b05493..80f7771 100644
--- a/linpy/geometry.py
+++ b/linpy/geometry.py
@@ -19,8 +19,8 @@ import math
 import numbers
 import operator
 
-from abc import ABC, abstractproperty, abstractmethod
-from collections import OrderedDict, Mapping
+from abc import ABC, abstractmethod, abstractproperty
+from collections import Mapping, OrderedDict
 
 from .linexprs import Symbol
 
@@ -79,8 +79,8 @@ class Coordinates:
 
     def __new__(cls, coordinates):
         """
-        Create a coordinate system from a dictionary or a sequence that maps the
-        symbols to their coordinates. Coordinates must be rational numbers.
+        Create a coordinate system from a dictionary or a sequence that maps
+        the symbols to their coordinates. Coordinates must be rational numbers.
         """
         if isinstance(coordinates, Mapping):
             coordinates = coordinates.items()
@@ -155,7 +155,7 @@ class Coordinates:
 
     def __repr__(self):
         string = ', '.join(['{!r}: {!r}'.format(symbol, coordinate)
-            for symbol, coordinate in self.coordinates()])
+                            for symbol, coordinate in self.coordinates()])
         return '{}({{{}}})'.format(self.__class__.__name__, string)
 
     def _map(self, func):
@@ -202,8 +202,8 @@ class Point(Coordinates, GeometricObject):
     def __sub__(self, other):
         """
         If other is a point, substract it from self and return the resulting
-        vector. If other is a vector, translate the point by the opposite vector
-        and returns the resulting point.
+        vector. If other is a vector, translate the point by the opposite
+        vector and returns the resulting point.
         """
         coordinates = []
         if isinstance(other, Point):
@@ -231,8 +231,8 @@ class Vector(Coordinates):
 
     def __new__(cls, initial, terminal=None):
         """
-        Create a vector from a dictionary or a sequence that maps the symbols to
-        their coordinates, or as the displacement between two points.
+        Create a vector from a dictionary or a sequence that maps the symbols
+        to their coordinates, or as the displacement between two points.
         """
         if not isinstance(initial, Point):
             initial = Point(initial)
@@ -341,9 +341,6 @@ class Vector(Coordinates):
             result += coordinate1 * coordinate2
         return result
 
-    def __hash__(self):
-        return super().__hash__()
-
     def norm(self):
         """
         Return the norm of the vector.
@@ -361,7 +358,7 @@ class Vector(Coordinates):
 
     def asunit(self):
         """
-        Return the normalized vector, i.e. the vector of same direction but with
-        norm 1.
+        Return the normalized vector, i.e. the vector of same direction but
+        with norm 1.
         """
         return self / self.norm()