[misc] yapf pass under CI's interpreter (3.12) + pin hook language_version (#1702)

examples/inference/basic/basic_dmd.py

@@ -5,6 +5,8 @@ from fastvideo import VideoGenerator
 from fastvideo.api.sampling_param import SamplingParam
 
 OUTPUT_PATH = "video_samples_dmd2"
+
+
 def main():
     os.environ["FASTVIDEO_ATTENTION_BACKEND"] = "VIDEO_SPARSE_ATTN"
 
@@ -14,10 +16,10 @@ def main():
         model_name,
         # FastVideo will automatically handle distributed setup
         num_gpus=1,
-        use_fsdp_inference=False, # set to True if GPU is out of memory
+        use_fsdp_inference=False,  # set to True if GPU is out of memory
         # Adjust these offload parameters if you have < 32GB of VRAM
         text_encoder_cpu_offload=True,
-        pin_cpu_memory=True, # set to false if low CPU RAM or hit obscure "CUDA error: Invalid argument"
+        pin_cpu_memory=True,  # set to false if low CPU RAM or hit obscure "CUDA error: Invalid argument"
         dit_cpu_offload=False,
         vae_cpu_offload=False,
         VSA_sparsity=0.8,
@@ -25,7 +27,6 @@ def main():
     load_end_time = time.perf_counter()
     load_time = load_end_time - load_start_time
 
-
     sampling_param = SamplingParam.from_pretrained(model_name)
     sampling_param.num_frames = 81
 
@@ -39,18 +40,16 @@ def main():
 
     # Generate another video with a different prompt, without reloading the
     # model!
-    prompt2 = (
-        "A majestic lion strides across the golden savanna, its powerful frame "
-        "glistening under the warm afternoon sun. The tall grass ripples gently in "
-        "the breeze, enhancing the lion's commanding presence. The tone is vibrant, "
-        "embodying the raw energy of the wild. Low angle, steady tracking shot, "
-        "cinematic.")
+    prompt2 = ("A majestic lion strides across the golden savanna, its powerful frame "
+               "glistening under the warm afternoon sun. The tall grass ripples gently in "
+               "the breeze, enhancing the lion's commanding presence. The tone is vibrant, "
+               "embodying the raw energy of the wild. Low angle, steady tracking shot, "
+               "cinematic.")
     start_time = time.perf_counter()
     video2 = generator.generate_video(prompt2, output_path=OUTPUT_PATH, save_video=True, num_frames=81)
     end_time = time.perf_counter()
     gen_time2 = end_time - start_time
 
-
     print(f"Time taken to load model: {load_time} seconds")
     print(f"Time taken to generate video: {gen_time} seconds")
     print(f"Time taken to generate video2: {gen_time2} seconds")