@staticmethod
    def from_string(key_pem, is_x509_cert):
        if is_x509_cert:
            key_pem = _to_bytes(key_pem)
            pemLines = key_pem.replace(b' ', b'').split()
            certDer = _urlsafe_b64decode(b''.join(pemLines[1:-1]))
            certSeq = DerSequence()
            certSeq.decode(certDer)
            tbsSeq = DerSequence()
            tbsSeq.decode(certSeq[0])
            pubkey = RSA.importKey(tbsSeq[6])
        else:
            pubkey = RSA.importKey(key_pem)
        return PyCryptoVerifier(pubkey)
Parse a pending latency string into a float of the value in seconds.
dataset/ETHPy150Open google/oauth2client/oauth2client/_pycrypto_crypt.py/PyCryptoVerifier.from_string--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/tools/devappserver2/module.py/AutoScalingModule._parse_pending_latency