subnet-convert.py

# Python script to convert subnets to lists of IP
# Prompt the user to input a subnet in CIDR notation
subnet = input("Enter the subnet in CIDR notation (e.g. 192.168.1.0/24): ")

# Split the subnet into IP address and CIDR mask
ip_addr, cidr = subnet.split("/")
cidr = int(cidr)

# Calculate the netmask
netmask = (0xffffffff << (32 - cidr)) & 0xffffffff

# Calculate the starting and ending IP addresses
start_ip = int(''.join(['%02x' % int(x) for x in ip_addr.split('.')]), 16) & netmask
end_ip = start_ip | ~netmask & 0xffffffff

# Iterate over all IP addresses in the subnet and append them to a list
ips = []
for i in range(start_ip, end_ip+1):
    ips.append('.'.join([str((i >> (8 * j)) & 0xff) for j in range(4)][::-1]))

# Print out the list of IP addresses with each IP address on a separate line
print('\n'.join(ips))