Set instead a list

import time

devices = {"iphone", "android", "radio", "tv", "tablet", "pc", "laptop"}

user_input = input("Enter a device name: ").strip().lower()

start_time = time.time()
is_present = user_input in devices
end_time = time.time()

if is_present:
    print(f"'{user_input}' is in the device list.")
else:
    print(f"'{user_input}' is NOT in the device list.")

print(f"Time taken for the check: {end_time - start_time:.10f} seconds")