added notification when required file/s doesn't exist and prompt user to run install_requirements.py. Also changed the path to the video in demo 17

Author: Erol444

examples/08_rgb_mobilenet.py

@@ -13,6 +13,9 @@
 parser.add_argument('-s', '--sync', action="store_true", help="Sync RGB output with NN output", default=False)
 args = parser.parse_args()
 
+if not Path(nnPathDefault).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
+
 # Start defining a pipeline
 pipeline = dai.Pipeline()
 

examples/09_mono_mobilenet.py

@@ -11,6 +11,8 @@
 if len(sys.argv) > 1:
     nnPath = sys.argv[1]
 
+if not Path(nnPath).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
 
 # Start defining a pipeline
 pipeline = dai.Pipeline()

examples/10_mono_depth_mobilenetssd.py

@@ -11,6 +11,8 @@
 if len(sys.argv) > 1:
     nnPath = sys.argv[1]
 
+if not Path(nnPath).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
 
 # Start defining a pipeline
 pipeline = dai.Pipeline()

examples/11_rgb_encoding_mono_mobilenet.py

@@ -11,6 +11,8 @@
 if len(sys.argv) > 1:
     nnPath = sys.argv[1]
 
+if not Path(nnPath).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
 
 pipeline = dai.Pipeline()
 

examples/12_rgb_encoding_mono_mobilenet_depth.py

@@ -11,6 +11,8 @@
 if len(sys.argv) > 1:
     nnPath = sys.argv[1]
 
+if not Path(nnPath).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
 
 pipeline = dai.Pipeline()
 

examples/15_rgb_mobilenet_4k.py

@@ -11,6 +11,9 @@
 if len(sys.argv) > 1:
     nnPath = sys.argv[1]
 
+if not Path(nnPath).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
+
 # Start defining a pipeline
 pipeline = dai.Pipeline()
 

examples/17_video_mobilenet.py

@@ -8,12 +8,16 @@
 from time import monotonic
 
 # Get argument first
-nnPath = str((Path(__file__).parent / Path('models/mobilenet-ssd_openvino_2021.2_8shave.blob')).resolve().absolute())
-videoPath = str(Path("./construction_vest.mp4").resolve().absolute())
+parentDir = Path(__file__).parent
+nnPath = str((parentDir / Path('models/mobilenet-ssd_openvino_2021.2_8shave.blob')).resolve().absolute())
+videoPath = str((parentDir / Path('models/construction_vest.mp4')).resolve().absolute())
 if len(sys.argv) > 2:
     nnPath = sys.argv[1]
     videoPath = sys.argv[2]
 
+if not Path(nnPath).exists() or not Path(videoPath).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
+
 # Start defining a pipeline
 pipeline = dai.Pipeline()
 

examples/18_rgb_encoding_mobilenet.py

@@ -11,6 +11,8 @@
 if len(sys.argv) > 1:
     nnPath = sys.argv[1]
 
+if not Path(nnPath).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
 
 pipeline = dai.Pipeline()
 

examples/22_1_tiny_yolo_v3_device_side_decoding.py

@@ -38,6 +38,9 @@
 if len(sys.argv) > 1:
     nnPath = sys.argv[1]
 
+if not Path(nnPath).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
+
 # Start defining a pipeline
 pipeline = dai.Pipeline()
 

examples/22_2_tiny_yolo_v4_device_side_decoding.py

@@ -37,6 +37,9 @@
 if len(sys.argv) > 1:
     nnPath = sys.argv[1]
 
+if not Path(nnPath).exists():
+    raise RuntimeError("Required file/s not found, please run 'python3 install_requirements.py'")
+
 # Start defining a pipeline
 pipeline = dai.Pipeline()