<human>:  check value a valid item in enum.
<bot>: Here is a Python code to check value a valid item in an enum

import enum

def is_valid_enum_item(value):
  """Check value a valid item in enum"""
  return isinstance(value, enum.Enum)

# Enter the value
value = "a"

# Calling the function
if is_valid_enum_item(value):
  print("Valid")
else:
  print("Invalid")

#Example Output
# Invalid

#Remember to inspect code for bugs.