fixed permission issue in windows

gradio/inputs.py

@@ -645,7 +645,7 @@ class Image(InputComponent):
         elif self.type == "numpy":
             return np.array(im)
         elif self.type == "file":
-            file_obj = tempfile.NamedTemporaryFile(suffix=("."+fmt.lower() if fmt is not None else ".png"))
+            file_obj = tempfile.NamedTemporaryFile(delete=False, suffix=("."+fmt.lower() if fmt is not None else ".png"))
             im.save(file_obj.name)
             return file_obj
         else:
@@ -789,7 +789,7 @@ class Audio(InputComponent):
             leave_one_out_data = np.copy(data)
             start, stop = boundaries[index], boundaries[index + 1]
             leave_one_out_data[start:stop] = 0
-            file = tempfile.NamedTemporaryFile()
+            file = tempfile.NamedTemporaryFile(delete=False)
             scipy.io.wavfile.write(file, sample_rate, leave_one_out_data)                
             out_data = processing_utils.encode_file_to_base64(file.name, type="audio", ext="wav")
             leave_one_out_sets.append(out_data)

gradio/outputs.py

@@ -286,7 +286,7 @@ class Audio(OutputComponent):
     def postprocess(self, y):
         if self.type in ["numpy", "file", "auto"]:
             if self.type == "numpy" or (self.type == "auto" and isinstance(y, tuple)):
-                file = tempfile.NamedTemporaryFile()
+                file = tempfile.NamedTemporaryFile(delete=False)
                 scipy.io.wavfile.write(file, y[0], y[1])                
                 y = file.name
             return processing_utils.encode_file_to_base64(y, type="audio", ext="wav")

gradio/processing_utils.py

@@ -73,7 +73,7 @@ def decode_base64_to_binary(encoding):
 
 
 def decode_base64_to_file(encoding):
-    file_obj = tempfile.NamedTemporaryFile()
+    file_obj = tempfile.NamedTemporaryFile(delete=False)
     file_obj.write(decode_base64_to_binary(encoding))
     file_obj.flush()
     return file_obj