elliptic curve public key recovery feature about fastecdsa HOT 7 CLOSED

$ python3 compare_recover_and_verify.py
Signing 2016 times:
2016 signatures, using 3.365245819091797 seconds.
Recovering 2016 times:
2016 signatures, using 25.673808813095093 seconds.
Verifying 2016 times:
2016 signatures, using 1.52587890625e-05 seconds.

from fastecdsa import keys, curve, ecdsa
from hashlib import sha256
from time import time

curve = curve.secp256k1

# generate a private key for curve P256
priv_key = keys.gen_private_key(curve)

# get the public key corresponding to the private key we just generated
pub_key = keys.get_public_key(priv_key, curve)

def single_test():
    m = "a message to sign via ECDSA"  # some message
    r, s = ecdsa.sign(m, priv_key, curve=curve)
    keys = keys.get_public_keys_from_sig((r,s), m, curve=curve)

    print(pub_key)
    print(keys[0])
    print(keys[1])

def batch_test():

    messages = [str(i) for i in range(0, 2016)]

    print("Signing 2016 times:")
    start = time()
    signatures = [ecdsa.sign(m, priv_key, curve=curve) for m in messages]
    print("2016 signatures, using {} seconds.".format(time()-start))
    sigm =  zip(signatures, messages)

    print("Recovering 2016 times:")
    start = time()
    [keys.get_public_keys_from_sig(sig, m, curve=curve) for sig, m in sigm]
    print("2016 signatures, using {} seconds.".format(time()-start))
    
    start = time()
    print("Verifying 2016 times:")
    [ecdsa.verify(sig, m, pub_key, curve=curve) for sig, m in sigm]
    print("2016 signatures, using {} seconds.".format(time()-start))

batch_test()