Subnetting calculator (DhanushNehru#296)

Author: ivnvxd

README.md

@@ -109,6 +109,7 @@ More information on contributing and the general code of conduct for discussion
 | Snake Water Gun                      | [Snake Water Gun](https://github.com/DhanushNehru/Python-Scripts/tree/master/Snake%20Water%20Gun)                                                 | A game similar to Rock Paper Scissors.                                                                              |
 | Sorting                              | [Sorting](https://github.com/DhanushNehru/Python-Scripts/tree/master/Sorting)                                                                 | Algorithm for bubble sorting.                                                                                       |
 | Star Pattern                         | [Star Pattern](https://github.com/DhanushNehru/Python-Scripts/tree/master/Star%20Pattern)                                                     | Creates a star pattern pyramid.                                                                                     |
+| Subnetting Calculator                | [Subnetting Calculator](https://github.com/DhanushNehru/Python-Scripts/tree/master/Subnetting%20Calculator)                                     | Calculates network information based on a given IP address and subnet mask.                                         |
 | Take a break                         | [Take a break](https://github.com/DhanushNehru/Python-Scripts/tree/master/Take%20A%20Break)                                                   | Python code to take a break while working long hours.                                                               |
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Subnetting Calculator/README.md

@@ -0,0 +1,40 @@
+# Subnetting Calculator
+
+This Python script calculates network information based on a given IP address and subnet mask.
+
+## Features
+
+- Calculates network address and broadcast address
+- Provides the range of IP addresses for the network
+- Shows the usable host IP range
+- Calculates the total number of hosts and usable hosts
+
+## Usage
+
+1. Ensure you have Python 3.x installed on your system.
+2. Run the script:
+   ```
+   python subnetting_calculator.py
+   ```
+3. Enter the IP address and subnet mask when prompted.
+
+## Example
+
+```
+Enter IP address: 192.168.1.1
+Enter subnet mask: 255.255.255.0
+
+Network Information:
+IP Address: 192.168.1.1
+Subnet Mask: 255.255.255.0
+Network Address: 192.168.1.0
+Broadcast Address: 192.168.1.255
+Range of IP addresses: 192.168.1.0 - 192.168.1.255
+Usable Host IP Range: 192.168.1.1 - 192.168.1.254
+Total Hosts: 256
+Usable Hosts: 254
+```
+
+## Requirements
+
+This script uses the `ipaddress` module, which is part of the Python standard library. No additional installations are required.

Subnetting Calculator/subnetting_calculator.py

@@ -0,0 +1,46 @@
+import ipaddress
+
+
+def calculate_network_info(ip_address, subnet_mask):
+    network = ipaddress.IPv4Network(f"{ip_address}/{subnet_mask}", strict=False)
+
+    network_address = network.network_address
+    broadcast_address = network.broadcast_address
+    total_hosts = network.num_addresses
+    usable_hosts = max(total_hosts - 2, 0)
+    first_usable_host = network_address + 1 if usable_hosts > 0 else None
+    last_usable_host = broadcast_address - 1 if usable_hosts > 0 else None
+
+    results = {
+        "IP Address": ip_address,
+        "Subnet Mask": subnet_mask,
+        "Network Address": str(network_address),
+        "Broadcast Address": str(broadcast_address),
+        "Range of IP addresses": f"{network_address} - {broadcast_address}",
+        "Usable Host IP Range": (
+            f"{first_usable_host} - {last_usable_host}" if usable_hosts > 0 else "N/A"
+        ),
+        "Total Hosts": total_hosts,
+        "Usable Hosts": usable_hosts,
+    }
+
+    return results
+
+
+def main():
+    try:
+        ip_address = input("Enter IP address: ")
+        subnet_mask = input("Enter subnet mask: ")
+
+        info = calculate_network_info(ip_address, subnet_mask)
+
+        print("\nNetwork Information:")
+        for key, value in info.items():
+            print(f"{key}: {value}")
+
+    except ValueError as e:
+        print(f"Error: {e}")
+
+
+if __name__ == "__main__":
+    main()