Python wifi status

Python wifi status DEFAULT

How to check the internet connection in Python?

Nowadays, the Internet is an essential part of our day-to-day lives. If the server is down even for a minute, then we check the Internet connectivity in various ways. Can Python help us check the connectivity? Yes, we can use Python language for checking the internet connection. In this tutorial, we will find out whether the computer is connected to the internet or not.

Checking Internet Connection in Python

Below we have described two methods of checking the internet connection in Python.

  1. using urllib package
  2. using an IP address/socket package:

By using an urllib package

To fetch URLs, we use urllib.request module in Python. This can fetch URLs using a variety of different protocols.

One of the functions present in the package are urllib.request.urlopen().
Syntax of urllib.request.urlopen() is

urllib.request.urlopen(url, data=None, [timeout, ]*, cafile=None, capath=None, cadefault=False, context=None)

Here, we will specify only the URL. And the rest of the parameters to their default values.

Let’s see how to use it for checking the internet-

import urllib.request def connect(host='http://google.com'): try:     urllib.request.urlopen(host) #Python 3.x return True except: return False # test print( ‘connected’ if connect() else ‘no internet!’ )

Output:

Connected

Initially, we import the urllib package. Then we used a function ‘connected()‘, whose parameter is the URL. It is unnecessary to use the URL as  ’http://google.com’, it can be any URL. Inside the try block, we implemented the above method to check internet connectivity. As you can observe, instead of passing the URL, we have kept host over there which has the value of URL.
If the Internet connection is present, then it returns True else the control goes to except block and it returns False.
With the help of the print statement, if the returned value is true then ‘Connected’ else ‘no internet!’ is printed.

Let’s see the above program by not giving any parameter to the function-

import urllib.request def connect(): try: urllib.request.urlopen('http://google.com') #Python 3.x return True except: return False print( 'connected' if connect() else 'no internet!' )

Output:

no internet!

Note: In Python 2.x, we replace urllib.request.urlopen() by urllib.urlopen().

By using an IP address/By using socket package:

Here, we will use an indirect way when compared to the previous method.
127.0.0.1 is a special-purpose IPv4 address also known as localhost. All computers use this address as their own, however, it will not allow them to communicate with different devices as a real IP address does. The computer you’re on only uses the loopback address.

We import socket to check the connectivity. Socket programming is a method of connecting 2 nodes on a network to speak with one another.
You can find the IP using socket.gethostbyname() methodBelow is the program to check the internet connection:

import socket IPaddress=socket.gethostbyname(socket.gethostname()) if IPaddress=="127.0.0.1": print("No internet, your localhost is "+ IPaddress) else: print("Connected, with the IP address: "+ IPaddress )

Output:

No internet, your localhost is 127.0.0.1

Initially, we import the socket package. Then fetch the IP address using socket.gethostbyname() method. When the Internet connection is absent, then it fetches the IP address as 127.0.0.1. Now, If-Else conditional statement is used to check whether or not the system is connected to the internet.

 

The above specified are the two ways to check the internet connection.

Also read:

Introduction to SQLite 3 with example in Python

Sours: https://www.codespeedy.com/how-to-check-the-internet-connection-in-python/

class WLAN – control built-in WiFi interfaces¶

This class provides a driver for WiFi network processors. Example usage:

importnetwork# enable station interface and connect to WiFi access pointnic=network.WLAN(network.STA_IF)nic.active(True)nic.connect('your-ssid','your-password')# now use sockets as usual

Constructors¶

class (interface_id

Create a WLAN network interface object. Supported interfaces are (station aka client, connects to upstream WiFi access points) and (access point, allows other WiFi clients to connect). Availability of the methods below depends on interface type. For example, only STA interface may to an access point.

Methods¶

([is_active])¶

Activate (“up”) or deactivate (“down”) network interface, if boolean argument is passed. Otherwise, query current state if no argument is provided. Most other methods require active interface.

(ssid=None, password=None, *, bssid=None

Connect to the specified wireless network, using the specified password. If bssid is given then the connection will be restricted to the access-point with that MAC address (the ssid must also be specified in this case).

()¶

Disconnect from the currently connected wireless network.

()¶

Scan for the available wireless networks. Hidden networks – where the SSID is not broadcast – will also be scanned if the WLAN interface allows it.

Scanning is only possible on STA interface. Returns list of tuples with the information about WiFi access points:

(ssid, bssid, channel, RSSI, authmode, hidden)

bssid is hardware address of an access point, in binary form, returned as bytes object. You can use to convert it to ASCII form.

There are five values for authmode:

  • 0 – open

  • 1 – WEP

  • 2 – WPA-PSK

  • 3 – WPA2-PSK

  • 4 – WPA/WPA2-PSK

and two for hidden:

([param])¶

Return the current status of the wireless connection.

When called with no argument the return value describes the network link status. The possible statuses are defined as constants:

  • – no connection and no activity,

  • – connecting in progress,

  • – failed due to incorrect password,

  • – failed because no access point replied,

  • – failed due to other problems,

  • – connection successful.

When called with one argument param should be a string naming the status parameter to retrieve. Supported parameters in WiFI STA mode are: .

()¶

In case of STA mode, returns if connected to a WiFi access point and has a valid IP address. In AP mode returns when a station is connected. Returns otherwise.

([(ip, subnet, gateway, dns)])¶

Get/set IP-level network interface parameters: IP address, subnet mask, gateway and DNS server. When called with no arguments, this method returns a 4-tuple with the above information. To set the above values, pass a 4-tuple with the required information. For example:

nic.ifconfig(('192.168.0.4','255.255.255.0','192.168.0.1','8.8.8.8'))
('param'
(param=value, ...)

Get or set general network interface parameters. These methods allow to work with additional parameters beyond standard IP configuration (as dealt with by ). These include network-specific and hardware-specific parameters. For setting parameters, keyword argument syntax should be used, multiple parameters can be set at once. For querying, parameters name should be quoted as a string, and only one parameter can be queries at time:

# Set WiFi access point name (formally known as ESSID) and WiFi channelap.config(essid='My AP',channel=11)# Query params one by oneprint(ap.config('essid'))print(ap.config('channel'))

Following are commonly supported parameters (availability of a specific parameter depends on network technology type, driver, and MicroPython port).

Parameter

Description

mac

MAC address (bytes)

essid

WiFi access point name (string)

channel

WiFi channel (integer)

hidden

Whether ESSID is hidden (boolean)

authmode

Authentication mode supported (enumeration, see module constants)

password

Access password (string)

dhcp_hostname

The DHCP hostname to use

reconnects

Number of reconnect attempts to make (integer, 0=none, -1=unlimited)


© Copyright - The MicroPython Documentation is Copyright © 2014-2021, Damien P. George, Paul Sokolovsky, and contributors Last updated on 12 Oct 2021.

Built with Sphinx using a theme provided by Read the Docs.
Sours: https://docs.micropython.org/en/latest/library/network.WLAN.html
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Python WiFi is a Python module that provides read and write access to a wireless network card’s capabilities using the Linux Wireless Extensions. It was initially developed by Roman Joost with advice from Guido Goldstein of Infrae. It is currently maintained by Sean Robinson.

More information is available at http://pythonwifi.tuxfamily.org. A mailing list for announcements and developer discussion is available at [email protected]

Check the ./docs/feature_matrix_*.txt files for a detailed list of what is implemented. This may not work with 64-bit Linux kernels, I would appreciate reports of success or failure on such systems.

Example Applications

The examples directory contains iwconfig.py and iwlist.py, which are sample re-implementations of iwconfig and iwlist. These scripts use the pythonwifi module to duplicate the functionality of those programs as closely as possible.

Files and Directories

./docs/ - supporting documentation ./docs/api/ - documentation of the pythonwifi API (not yet there) ./docs/logos/ - the Python WiFi logo in various formats ./examples/ - sample uses of pythonwifi module ./pythonwifi/ - the module source code ./INSTALL - installation instructions ./Makefile - convenience commands for developers ./README - this file ./setup.py - installation script

Python WiFi Users

The methods in the Wireless class are the highest level interace. An example program, which prints the ESSID and the association mode:

>>> from pythonwifi.iwlibs import Wireless >>> wifi = Wireless('eth1') >>> wifi.getEssid() 'romanofski' >>> wifi.getMode() 'Managed'

License

pythonwifi is licensed under LGPLv2+, however, the examples (e.g. iwconfig.py and iwlist.py) are licensed under GPLv2+.

Sours: https://pypi.org/project/python-wifi/
python wifi connect demo

How to connect WiFi using Python?

Seeing a computer without an active internet connection today is next to impossible. The Internet has been of the utmost importance in the 21st Century. There are multiple ways one can connect their machine to the Internet. The first being, the traditional cables, i.e. the Ethernet, and the other being, the modern Wireless Fidelity Systems or Wi-Fi as we all know it. Wi-Fi has made life easier and faster for all of us. With a touch of the thumb or a click of the mouse, we get connected to a limitless ocean of information and resources almost instantaneously. In this article, we will accomplish the same task with a High-Level modern programming language, like Python

Connecting to a Known WiFi Network

Here we are going to connect to a previously connected WiFi network.

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Approach:

The approach of the program will be simple:

  • Import the necessary libraries.
  • Displaying all the available SSIDs with the help of cmd commands and a python library named os.
  • Selecting the known Wi-Fi you want to connect to.
  • Wait for it to Connect successfully.

Now, let’s get coding. We will make use of a couple of Windows Command Prompt commands to access the list of available Wi-Fi networks and to connect to a previously connected network. But, how do we write and execute Window Command Prompt commands in a Python script? Umm…

The os library helps us communicate with the operating system directly through python with several methods like path(), getcwd(), system(), etc. We can even run CMD commands using os functions. 

Implementation:

Python3

 

 

 

 

 
 Output:

Explanation:

Here, first, we fetch the os library using the import keyword. Then, we use the system() method from the os library with helps us run the cmd command 

'cmd /c "netsh wlan show networks"'

The above command scans all the available SSIDs and displays them as output along with their Infrastructure, Authentication, and Encryption type. We proceed by taking a string input of the SSID, the user wishes to connect to and save them in the variable named, name_of_router

This string variable is then substituted in the place of another cmd command where we are supposed to enter the name of the SSID. 

f'''cmd /c "netsh wlan connect name={name_of_router}"'''

We will now be successfully connected to the particular SSID. 

Connecting to a New Wi-Fi Network
 

Now, connecting to a new Wi-Fi involves a couple of more steps. To connect to a new network, we must first add this new Wi-Fi Network profile to our system using an .XML file. This makes that Wi-Fi network, a known SSID, and we can now successfully connect to it using the above steps.

Approach:

  • Step 1: Import the os library
  • Step 2: Set up the new Wi-Fi Network’s XML configuration
  • Step 3: Select the Wi-Fi Network
  • Step 4: Add this profile to your system
  • Step 5: Connect to the Wi-Fi network

 Implementation:

Python3

 

 

 

 

 

 

 

 

Output:

Explanation:

First, we define the createNewConnection function which takes the parameters name, SSID, and password, which are all strings that we used to complete to config variable. The config variable is a string that helps us define the XML configuration for a new Wi-Fi Network.

Then, we take the input from the user for the SSID name and Password. They are then fed into XML code which is then added as a profile using the following lines of code:

command = "netsh wlan add profile filename=\""+name+".xml\""+" interface=Wi-Fi" with open(name+".xml", 'w') as file: file.write(config) os.system(command)

We can now connect to the Wi-Fi using the same commands we used earlier in this article and connect to the network as if it was a known one. 


Sours: https://www.geeksforgeeks.org/how-to-connect-wifi-using-python/

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