I am trying to connect to the serial ports a Raspberry Pi 3 Model B running Raspbian through Python.

`import serial` works fine but `ser = serial.Serial("dev/ttyAMA0", baudrate=9600)` yields this error: 

    Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    AttributeError: 'module' object has no attribute 'Serial'