From 6639d07a080229b2b7080db1951267e1922c9ff8 Mon Sep 17 00:00:00 2001 From: tsmars15 Date: Wed, 30 Nov 2011 19:18:58 +0200 Subject: [PATCH] Update sympy/physics/mechanics/essential.py --- sympy/physics/mechanics/essential.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sympy/physics/mechanics/essential.py b/sympy/physics/mechanics/essential.py index f97bc0b50570..5d27d94e31b7 100644 --- a/sympy/physics/mechanics/essential.py +++ b/sympy/physics/mechanics/essential.py @@ -916,7 +916,7 @@ def _rot(axis, angle): wvec = thetad * amounts[1].express(parent).normalize() else: try: - from sympy.polys.polyerrors import CoercionFailed,FlagError + from sympy.polys.polyerrors import CoercionFailed from sympy.physics.mechanics.functions import kinematic_equations q1, q2, q3 = amounts u1, u2, u3 = dynamicsymbols('u1, u2, u3') @@ -928,7 +928,7 @@ def _rot(axis, angle): u2 = expand(td[u2]) u3 = expand(td[u3]) wvec = u1 * self.x + u2 * self.y + u3 * self.z - except (CoercionFailed,AssertionError): + except (CoercionFailed, AssertionError): wvec = self._w_diff_dcm(parent) self._ang_vel_dict.update({parent: wvec}) parent._ang_vel_dict.update({self: -wvec})