Generate RSA 3072 bits public keys and private keys python with cryptography package and print them in PEM/PKCS format

generate_rsa_3072.py

from cryptography.hazmat.primitives import serialization as crypto_serialization
from cryptography.hazmat.primitives.asymmetric import rsa
from cryptography.hazmat.backends import default_backend as crypto_default_backend

key = rsa.generate_private_key(
    backend=crypto_default_backend(),
    public_exponent=65537,
    key_size=3072
)
private_key = key.private_bytes(
    crypto_serialization.Encoding.PEM,
    crypto_serialization.PrivateFormat.PKCS8,
    crypto_serialization.NoEncryption())
public_key = key.public_key().public_bytes(
    crypto_serialization.Encoding.PEM,
    crypto_serialization.PublicFormat.SubjectPublicKeyInfo
)

print('{}\t{}'.format(public_key, private_key))