pyre and lint fixes

Summary: Fixing several unused imports and pyre/linter warnings.

Reviewed By: bottler

Differential Revision: D22592491

fbshipit-source-id: 463383b9b73a545949475044fb5c531712f8482c

pytorch3d/io/obj_io.py

@@ -368,7 +368,7 @@ def _load_obj(
     # startswith expects each line to be a string. If the file is read in as
     # bytes then first decode to strings.
     if lines and isinstance(lines[0], bytes):
-        lines = [l.decode("utf-8") for l in lines]
+        lines = [el.decode("utf-8") for el in lines]
 
     for line in lines:
         if line.startswith("mtllib"):

pytorch3d/renderer/compositing.py

-#!/usr/bin/env python3
 # Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
 
-
-from typing import NamedTuple
-
 import torch
 from pytorch3d import _C
 

pytorch3d/renderer/mesh/rasterizer.py

@@ -5,7 +5,6 @@ from typing import NamedTuple, Optional
 import torch
 import torch.nn as nn
 
-from ..cameras import get_world_to_view_transform
 from .rasterize_meshes import rasterize_meshes
 
 

pytorch3d/renderer/mesh/renderer.py

@@ -4,9 +4,6 @@
 import torch
 import torch.nn as nn
 
-from .rasterizer import Fragments
-from .utils import _clip_barycentric_coordinates, _interpolate_zbuf
-
 
 # A renderer class should be initialized with a
 # function for rasterization and a function for shading.

pytorch3d/renderer/points/rasterizer.py

@@ -7,7 +7,6 @@ from typing import NamedTuple, Optional
 import torch
 import torch.nn as nn
 
-from ..cameras import get_world_to_view_transform
 from .rasterize_points import rasterize_points
 
 

pytorch3d/transforms/transform3d.py

@@ -375,7 +375,7 @@ class Transform3d:
         """
         other = Transform3d(device=self.device)
         if self._lu is not None:
-            other._lu = [l.clone() for l in self._lu]
+            other._lu = [elem.clone() for elem in self._lu]
         other._matrix = self._matrix.clone()
         other._transforms = [t.clone() for t in self._transforms]
         return other

tests/test_interpolate_face_attributes.py

@@ -9,10 +9,7 @@ from pytorch3d.ops.interp_face_attrs import (
     interpolate_face_attributes_python,
 )
 from pytorch3d.renderer.mesh.rasterizer import Fragments
-from pytorch3d.renderer.mesh.texturing import (
-    interpolate_texture_map,
-    interpolate_vertex_colors,
-)
+from pytorch3d.renderer.mesh.texturing import interpolate_vertex_colors
 from pytorch3d.structures import Meshes, Textures