From fb383c71e2a7e4e05bfd26e9c9c721e72cb01559 Mon Sep 17 00:00:00 2001
From: Maya <maya17grd@gmail.com>
Date: Thu, 27 Aug 2020 09:19:06 +0300
Subject: [PATCH] Deleted unnecessary

---
 cvat/apps/engine/media_extractors.py |  2 +-
 cvat/apps/engine/prepare.py          | 23 ++---------------------
 cvat/apps/engine/views.py            |  2 +-
 3 files changed, 4 insertions(+), 23 deletions(-)

diff --git a/cvat/apps/engine/media_extractors.py b/cvat/apps/engine/media_extractors.py
index 0ea98941..49ee9c9f 100644
--- a/cvat/apps/engine/media_extractors.py
+++ b/cvat/apps/engine/media_extractors.py
@@ -188,7 +188,7 @@ class ZipReader(ImageListReader):
     def get_path(self, i):
         if  self._zip_source.filename:
             return os.path.join(os.path.dirname(self._zip_source.filename), self._source_path[i])
-        else: #для определения mime_type
+        else: # necessary for mime_type definition
             return self._source_path[i]
 
     def extract(self):
diff --git a/cvat/apps/engine/prepare.py b/cvat/apps/engine/prepare.py
index 97c07a84..3d4ca7da 100644
--- a/cvat/apps/engine/prepare.py
+++ b/cvat/apps/engine/prepare.py
@@ -54,25 +54,6 @@ class AnalyzeVideo(WorkWithVideo):
                 frame_pts, frame_dts = frame.pts, frame.dts
         self._close_video_container(container)
 
-# class Frame:
-#     def __init__(self, frame, frame_number=None):
-#         self.frame = frame
-#         if frame_number:
-#             self.frame_number = frame_number
-
-#     def md5_hash(self):
-#         return hashlib.md5(self.frame.to_image().tobytes()).hexdigest()
-
-#     def __eq__(self, image):
-#         return self.md5_hash(self) == image.md5_hash(image) and self.frame.pts == image.frame.pts
-
-#     def __ne__(self, image):
-#         return md5_hash(self) != md5_hash(image) or self.frame.pts != image.frame.pts
-
-#     def __len__(self):
-#         return (self.frame.width, self.frame.height)
-
-
 def md5_hash(frame):
     return hashlib.md5(frame.to_image().tobytes()).hexdigest()
 
@@ -109,7 +90,8 @@ class PrepareInfo(WorkWithVideo):
                 if not flag:
                     break
 
-        if len(self.key_frames) == 0: #or self.frames // len(self.key_frames) > 300:
+        #TODO: correct ratio of number of frames to keyframes
+        if len(self.key_frames) == 0:
             raise Exception('Too few keyframes')
 
     def save_key_frames(self):
@@ -139,7 +121,6 @@ class PrepareInfo(WorkWithVideo):
             for line in file:
                 frame_number, timestamp = line.strip().split(' ')
 
-                #TODO: исправить если вдруг ключевой кадр окажется не первым
                 if int(frame_number) <= start_chunk_frame_number:
                     start_decode_frame_number = frame_number
                     start_decode_timestamp = timestamp
diff --git a/cvat/apps/engine/views.py b/cvat/apps/engine/views.py
index 94db4f39..7e46d836 100644
--- a/cvat/apps/engine/views.py
+++ b/cvat/apps/engine/views.py
@@ -27,7 +27,7 @@ from rest_framework.exceptions import APIException
 from rest_framework.permissions import SAFE_METHODS, IsAuthenticated
 from rest_framework.renderers import JSONRenderer
 from rest_framework.response import Response
-from sendfile import sendfile#убрать
+from sendfile import sendfile
 
 import cvat.apps.dataset_manager as dm
 import cvat.apps.dataset_manager.views # pylint: disable=unused-import