# download pycryptodome by running 'pip3 install pycryptodome'
from Crypto.PublicKey import RSA
private_key_obj = RSA.generate(2048) # this is an RSA key obj
pubkey_obj = private_key_obj.publickey() # this is an RSA key obj
private_key = private_key_obj.exportKey().decode("utf-8") # this is an RSA key string
pubkey = pubkey_obj.exportKey().decode("utf-8") # this is an RSA key string