Python encryption-decryption RSA using M2Crypto

m2crypto_sample.py

import base64
from M2Crypto import RSA, BIO

key = open('/path/public_key.pem', 'r').read()
pubkey = str(key).encode('utf8')
bio = BIO.MemoryBuffer(pubkey)
rsa = RSA.load_pub_key_bio(bio)
encrypted = rsa.public_encrypt('hello', RSA.pkcs1_oaep_padding)
print 'encrypted  text ', encrypted.encode('base64')

key = open('/path/private_key.pem', "r").read()
priv_key = BIO.MemoryBuffer(key.encode('utf8'))
key = RSA.load_key_bio(priv_key)
decrypted = key.private_decrypt(base64.b64decode(encrypted), RSA.pkcs1_oaep_padding)
print 'decrypted  text ', decrypted