Python PyCrypto: Generate RSA Keys Example.py

def generate_RSA(bits=2048):
    '''
    Generate an RSA keypair with an exponent of 65537 in PEM format
    param: bits The key length in bits
    Return private key and public key
    '''
    from Crypto.PublicKey import RSA 
    new_key = RSA.generate(bits, e=65537) 
    public_key = new_key.publickey().exportKey("PEM") 
    private_key = new_key.exportKey("PEM") 
    return private_key, public_key

from Crypto.PublicKey import RSA
code = 'nooneknows'

key = RSA.generate(2048)
privatekey = key.exportKey(passphrase=code, pkcs=8)
publickey = key.publickey().exportKey()

Nice But How Can I Write The Private Key I Tried This:
f = open('PublicKey.pem','w')
f.write(publick_key)
f.close()

BUT IT DOESN'T WORK WITH THE PRIVATE KEY, JUST RETURNS 0B

@WarAtLord try publick_key.exportKey("PEM")