最后，我能够使用PyBlueZ连接到设备。我希望这个答案将来能对其他人有所帮助。我尝试了以下方法：
首先，导入模块并发现设备。
import bluetooth, subprocess
nearby_devices = bluetooth.discover_devices(duration=4,lookup_names=True,
flush_cache=True, lookup_class=False)
当发现要连接的设备时，您需要知道端口，地址和密钥。有了这些信息，请执行以下操作：
name = name # Device name
addr = addr # Device Address
port = 1 # RFCOMM port
passkey = "1111" # passkey of the device you want to connect
# kill any "bluetooth-agent" process that is already running
subprocess.call("kill -9 `pidof bluetooth-agent`",shell=True)
# Start a new "bluetooth-agent" process where XXXX is the passkey
status = subprocess.call("bluetooth-agent " + passkey + " &",shell=True)
# Now, connect in the same way as always with PyBlueZ
try:
s = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
s.connect((addr,port))
except bluetooth.btcommon.BluetoothError as err:
# Error handler
pass
现在，您已连接！！您可以将套接字用于所需的任务：
s.recv(1024) # Buffer size
s.send("Hello World!")
官方PyBlueZ文档可在此处获得
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