Take the following IPv4 address: `128.32.10.1`

This address has 4 octets where each octet is a single byte (or 8 bits).

* 1st octet `128` has the binary representation: `10000000`
* 2nd octet `32` has the binary representation: `00100000`
* 3rd octet `10` has the binary representation: `00001010`
* 4th octet `1` has the binary representation: `00000001`

So `128.32.10.1` == `10000000.00100000.00001010.00000001`

Because the above IP address has 32 bits, we can represent it as the unsigned 32 bit number: `2149583361`

Complete the function that takes an unsigned 32 bit number and returns a string representation of its IPv4 address.

## Examples
```
2149583361 ==> "128.32.10.1"
32         ==> "0.0.0.32"
0          ==> "0.0.0.0"
```

Difficulty: EASY
Starter code: def int32_to_ip(int32):
	

Solutions:
from ipaddress import IPv4Address

def int32_to_ip(int32):
	return str(IPv4Address(int32))


def int32_to_ip(int32):
	return '{}.{}.{}.{}'.format(*int32.to_bytes(4, 'big'))


from ipaddress import ip_address

def int32_to_ip(int32):
	return str(ip_address(int32))


def int32_to_ip(i):
	return '.'.join([str(x) for x in [i >> 24 & 255, i >> 16 & 255, i >> 8 & 255, i & 255]])


def int32_to_ip(int32):
	first = (int32 & 255 << 24) >> 24
	second = (int32 & 255 << 16) >> 16
	third = (int32 & 255 << 8) >> 8
	fourth = int32 & 255
	return f'{first}.{second}.{third}.{fourth}'


def convert_bin(arr):
	summa = 0
	for (x, y) in enumerate(arr[::-1]):
		summa = summa + 2 ** x * int(y)
	return summa

def int32_to_ip(int32):
	n = ''
	while int32 > 0:
		y = str(int32 % 2)
		n = y + n
		int32 = int(int32 / 2)
	if len(n) != 32:
		while len(n) != 32:
			n = '0' + n
	a = n[:8]
	b = n[8:16]
	c = n[16:24]
	d = n[24:32]
	return str(convert_bin(a)) + '.' + str(convert_bin(b)) + '.' + str(convert_bin(c)) + '.' + str(convert_bin(d))


def int32_to_ip(int32):
	octets = []
	octets.append(str((int32 & 4278190080) >> 24))
	octets.append(str((int32 & 16711680) >> 16))
	octets.append(str((int32 & 65280) >> 8))
	octets.append(str(int32 & 255))
	return '.'.join(octets)


def int32_to_ip(int32):
	return '.'.join([str(int(bin(int32)[2:].zfill(32)[i:i + 8], 2)) for i in range(0, 32, 8)])


from re import sub

def int32_to_ip(int32):
	return sub('(\\d{8})', lambda x: str(int(x.group(), 2)) + '.', '{0:32b}'.format(int32).replace(' ', '0'))[:-1]