Rename time, position, and speed to times, positions, and speeds as these are lists and the time variable clashes with the imported time and causes errors.

PiperOrigin-RevId: 479538684
Change-Id: If9a47d1a4b84636435bcc980a4563ee7d2871fd1

Author: DeepMind

dm_control/mujoco/tutorial.ipynb

@@ -511,21 +511,21 @@
         "                           point2[0], point2[1], point2[2])\n",
         "\n",
         " # traces of time, position and speed\n",
-        "time = []\n",
-        "position = []\n",
-        "speed = []\n",
+        "times = []\n",
+        "positions = []\n",
+        "speeds = []\n",
         "offset = physics.model.jnt_axis[0]/8  # offset along the joint axis\n",
         "\n",
         "def scene_callback(physics, scn):\n",
         "  \"\"\"Draw position trace, speed modifies width and colours.\"\"\"\n",
-        "  if len(position) \u003e 1:\n",
-        "    for i in range(len(position)-1):\n",
-        "      rgba=np.array((np.clip(speed[i]/10, 0, 1),\n",
-        "                     np.clip(1-speed[i]/10, 0, 1),\n",
+        "  if len(positions) \u003e 1:\n",
+        "    for i in range(len(positions)-1):\n",
+        "      rgba=np.array((np.clip(speeds[i]/10, 0, 1),\n",
+        "                     np.clip(1-speeds[i]/10, 0, 1),\n",
         "                     .5, 1.))\n",
-        "      radius=.003*(1+speed[i])\n",
-        "      point1 = position[i] + offset*time[i]\n",
-        "      point2 = position[i+1] + offset*time[i+1]\n",
+        "      radius=.003*(1+speeds[i])\n",
+        "      point1 = positions[i] + offset*times[i]\n",
+        "      point2 = positions[i+1] + offset*times[i+1]\n",
         "      add_visual_capsule(scn, point1, point2, radius, rgba)\n",
         "\n",
         "duration = 6    # (seconds)\n",
@@ -536,9 +536,9 @@
         "physics.reset()  # Reset state and time\n",
         "while physics.data.time \u003c duration:\n",
         "  # append data to the traces\n",
-        "  position.append(physics.named.data.geom_xpos[\"green_sphere\"].copy())\n",
-        "  time.append(physics.data.time)\n",
-        "  speed.append(get_geom_speed(physics, \"green_sphere\"))\n",
+        "  positions.append(physics.named.data.geom_xpos[\"green_sphere\"].copy())\n",
+        "  times.append(physics.data.time)\n",
+        "  speeds.append(get_geom_speed(physics, \"green_sphere\"))\n",
         "  physics.step()\n",
         "  if len(frames) \u003c physics.data.time * framerate:\n",
         "    camera = mujoco.Camera(physics, max_geom=10000,\n",