def is_numeric(val):     """     Returns True if the string `val`     contains a valid integer or a float.     Returns False otherwise.     """     if val == float(val):         return True      elif val == int(val):         return True     else:         return False Test Failed: We caught the following error caused by your code: invalid literal for int() with base 10: '3.4' Check the following: Incorrect number or type of parameters/arguments? Error inside the function? Did you run your code? Used some global scope variables?

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