#### Ipv 4 Conversion

p
```# https://www.geeksforgeeks.org/convert-ip-address-to-integer-and-vice-versa/

"""
Convert an IPv4 address to its decimal representation.

Args:

Returns:
int: The decimal representation of the IP address.

>>> ipv4_to_decimal("192.168.0.1")
3232235521
>>> ipv4_to_decimal("10.0.0.255")
167772415
>>> ipv4_to_decimal("10.0.255")
Traceback (most recent call last):
...
>>> ipv4_to_decimal("10.0.0.256")
Traceback (most recent call last):
...
ValueError: Invalid IPv4 octet 256
"""

octets = [int(octet) for octet in ipv4_address.split(".")]
if len(octets) != 4:

decimal_ipv4 = 0
for octet in octets:
if not 0 <= octet <= 255:
raise ValueError(f"Invalid IPv4 octet {octet}")  # noqa: EM102
decimal_ipv4 = (decimal_ipv4 << 8) + int(octet)

return decimal_ipv4

"""
>>> alt_ipv4_to_decimal("192.168.0.1")
3232235521
>>> alt_ipv4_to_decimal("10.0.0.255")
167772415
"""
return int("0x" + "".join(f"{int(i):02x}" for i in ipv4_address.split(".")), 16)

def decimal_to_ipv4(decimal_ipv4: int) -> str:
"""
Convert a decimal representation of an IP address to its IPv4 format.

Args:
decimal_ipv4: An integer representing the decimal IP address.

Returns:
The IPv4 representation of the decimal IP address.

>>> decimal_to_ipv4(3232235521)
'192.168.0.1'
>>> decimal_to_ipv4(167772415)
'10.0.0.255'
>>> decimal_to_ipv4(-1)
Traceback (most recent call last):
...
"""

if not (0 <= decimal_ipv4 <= 4294967295):

ip_parts = []
for _ in range(4):
ip_parts.append(str(decimal_ipv4 & 255))
decimal_ipv4 >>= 8

return ".".join(reversed(ip_parts))

if __name__ == "__main__":
import doctest

doctest.testmod()
```