with open('py-executor-chain.pem', 'rb') as f:
creds = grpc.ssl_channel_credentials(f.read())
channel = grpc.secure_channel('localhost:50052', creds)
with open('py-executor-chain.pem', 'rb') as f:
creds = grpc.ssl_channel_credentials(f.read())
channel = grpc.secure_channel('localhost:50052', creds)