<human>:  detect interface existance.
<bot>: Here is a Python function to detect interface existance

import sys

def is_interface():
  """Detect interface existance."""
  return True

# Enter the path
path = "/home/dahlia/Desktop/python_code"

# Enter the filename
filename = "test.txt"

# Calling the function
if is_interface():
 print("Interface exists")
else:
 print("Interface does not exist")

#Example Output
# Interface exists

#Remember to inspect code for bugs.