Add sample_app.py

sample_app.py

@@ -0,0 +1,15 @@
+# This function was automatically generated. When modifying its signature, take care to apply
+# modifications also to the descriptor files in the repository.
+
+def main(numbers_file, multiplier):
+    """
+    Main function for application: PYTHONSAMPLEAPPENV
+    Arguments:
+        numbers_file: path to input file of type 'text_data'
+        multiplier: parameter of type 'INTEGER'
+    Returns:
+        File(s) named 'multiplied_numbers_plot.png' of type 'image_data' and format 'PNG' from working directory
+    """
+
+    # TODO: Put your application code here
+