create dir on download

Author: lucylq

README.md

@@ -101,9 +101,9 @@ Designed for interactive graphical conversations using the familiar web browser
 
 ## Quantizing your model (suggested for mobile)
 
-Quantization is the process of converting a model into a more memory-efficient representation.  Quantization is particularly important for accelerators -- to take advantage of the available memory bandwidth, and fit in the often limited high-speed memory in accelerators – and mobile devices – to fit in the typically very limited memory of mobile devices. 
+Quantization is the process of converting a model into a more memory-efficient representation.  Quantization is particularly important for accelerators -- to take advantage of the available memory bandwidth, and fit in the often limited high-speed memory in accelerators – and mobile devices – to fit in the typically very limited memory of mobile devices.
 
-With quantization, 32-bit floating numbers can be represented with as few as 8 or even 4 bits, and a scale shared by a group of these weights.  This transformation is lossy and modifies the behavior of models.  While research is being conducted on how to efficiently quantize large language models for use in mobile devices, this transformation invariable results in both quality loss and a reduced amount of control over the output of the models, leading to an increased risk of undesirable responses, hallucinations and stuttering.  
+With quantization, 32-bit floating numbers can be represented with as few as 8 or even 4 bits, and a scale shared by a group of these weights.  This transformation is lossy and modifies the behavior of models.  While research is being conducted on how to efficiently quantize large language models for use in mobile devices, this transformation invariable results in both quality loss and a reduced amount of control over the output of the models, leading to an increased risk of undesirable responses, hallucinations and stuttering.
 
 In effect an a developer quantizing a model, has much control and even more responsibility to quantize a model to quantify and reduce these effects.
 

download.py

@@ -93,6 +93,7 @@ def download_and_convert(
         # overwriting if necessary.
         if os.path.isdir(model_dir):
             shutil.rmtree(model_dir)
+        os.makedirs(model_dir, exist_ok=True)
         shutil.move(temp_dir, model_dir)
 
     finally: