Python WiFi Scanner
This utility scans for available WiFi networks using the pywifi library. It retrieves the SSID (network name), signal strength (RSSI), and security protocols of nearby access points.
Modules Used:
pywifi: To interface with the wireless network card.time: To wait for the scan to complete.- argparse: To handle command-line arguments.
Installation
pip install pywifi
# On Windows, you might also need comtypes
pip install comtypesThe Code
Save this as wifi_scanner.py.
import pywifi
from pywifi import const
import time
import argparse
def scan_wifi():
wifi = pywifi.PyWiFi()
# Get the first wireless interface
if len(wifi.interfaces()) == 0:
print("No WiFi interface found!")
return
iface = wifi.interfaces()[0]
print(f"Using interface: {iface.name()}")
# Trigger scan
print("Scanning for networks (this takes a few seconds)...")
iface.scan()
# Wait for scan to complete (usually takes 2-5 seconds)
time.sleep(5)
# Get results
results = iface.scan_results()
if not results:
print("No networks found.")
return
print(f"\nFound {len(results)} networks:")
print(f"{'SSID':<30} {'Signal':<10} {'Security'}")
print("-" * 60)
# Use a set to avoid duplicates (same SSID might appear multiple times)
seen_ssids = set()
for network in results:
ssid = network.ssid
# Skip empty SSIDs or duplicates
if ssid in seen_ssids or not ssid:
continue
seen_ssids.add(ssid)
# Signal strength (RSSI)
signal = network.signal
# Basic check for security (AKM - Authentication Key Management)
# Note: pywifi returns a list of AKM types
is_open = const.AKM_TYPE_NONE in network.akm
security = "Open" if is_open else "Protected"
print(f"{ssid:<30} {signal:<10} {security}")
if __name__ == "__main__":
# Run the scanner
scan_wifi()Usage
python wifi_scanner.pyNote: On Linux, you might need sudo privileges to perform a scan depending on your system configuration.