Update utils.py

Added the deleted changes to support ndu_upgrade.py

Author: RobertBlackhart

examples/python_client_library/utils.py

@@ -32,12 +32,14 @@ def __init__(
             long_arg: str,
             help_string: str,
             default=None,
-            required=False):
+            required=False,
+            arg_type=None):
         self.short_arg = short_arg
         self.long_arg = long_arg
         self.help_string = help_string
         self.default = default
         self.required = required
+        self.arg_type = arg_type if arg_type else str
 
 
 def parse_args(
@@ -49,7 +51,7 @@ def parse_args(
     for argument in arguments:
         parser.add_argument(
             argument.short_arg, argument.long_arg, required=argument.required,
-            help=argument.help_string, default=argument.default,
+            help=argument.help_string, default=argument.default, type=argument.arg_type,
         )
     parser.add_argument(
         "-u",
@@ -416,3 +418,43 @@ def show_lun() -> None:
     except NetAppRestError as error:
         print("Error:- " % error.http_err_response.http_response.text)
         print("Exception caught :" + str(error))
+
+        
+class LiveMultilineOutput:
+    """This is a class for managing multiline text output on the screen.
+    While inside this class' context, the application can change the output's
+    buffer by calling change() and the buffer will be redrawn, clearing the
+    previous output and printing all of the new output. Once the context is
+    exited, the cursor is moved to the line after the last line in the output
+    so that normal printing can continue.
+    """
+
+    def __init__(self, initial_data=None):
+        self.buffer = []
+        if initial_data:
+            self.buffer = initial_data
+        self._lines_drawn = 0
+        self.draw()
+
+    def change(self, new_list):
+        """Update the text buffer with a new list of strings"""
+
+        self.buffer = new_list
+        self.draw()
+
+    def draw(self):
+        """Erase our current line and write a new one, then move down"""
+
+        for line in self.buffer:
+            print("\033[K%s" % line)
+        self._lines_drawn = len(self.buffer)
+        # now that we're done, move all the way back to the top left
+        if self._lines_drawn > 0:
+            print("\033[%sA\r" % self._lines_drawn, end="")
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exception_type, exception_value, traceback):
+        # move down to the bottom
+        print("\033[%sB" % (self._lines_drawn - 1)).