上面的答案对于任何使用gpsd的现代版本并且只在特定时间需要数据的人来说都是非常低效和过于复杂的，而不是流媒体。

大多数gpse每秒至少发送一次位置信息。大概是因为许多基于GPS的应用程序都需要实时更新，所以我看到的绝大多数gpsd客户机示例都使用上述方法从gpsd观看流并接收实时更新(或多或少是GPS发送的)。

然而，如果(在OP的例子中)您不需要流式信息，而只需要在请求时(即通过用户交互或其他事件)最后报告的位置，则有一种更高效和更简单的方法：让gpsd缓存最新的位置信息，并在需要时进行查询。

gpsd JSON protocol有一个?POLL;请求，该请求返回gpsd看到的最新GPS信息。不必迭代gps消息的积压，并不断读取新消息以避免缓冲区已满，您可以在gpsd会话开始时发送?WATCH={"enable":true}消息，然后在需要时使用?POLL;查询最新位置信息。响应是一个JSON对象，包含gpsd从GPS上看到的最新信息。

如果您使用的是Python3，那么我找到的最简单的方法就是使用pypi上提供的gpsd-py3包。要连接到gpsd，请获取最新的位置信息，然后打印当前位置：import gpsd

gpsd.connect()

packet = gpsd.get_current()

print(packet.position())

您可以在需要新位置信息时重复gpsd.get_current()调用，在后台，gpsd包将执行对gpsd的?POLL;调用并返回表示响应的对象。

使用内置的gps模块来实现这一点并不是非常简单，但是有许多其他Python客户机可用，而且对于任何可以执行套接字通信的对象都是非常简单的，包括这个使用telnet的示例：$ telnet localhost 2947

Trying ::1...

Connected to localhost.

Escape character is '^]'.

{"class":"VERSION","release":"3.16","rev":"3.16","proto_major":3,"proto_minor":11}

?WATCH={"enable":true}

{"class":"DEVICES","devices":[{"class":"DEVICE","path":"/dev/pts/10","driver":"SiRF","activated":"2018-03-02T21:14:52.687Z","flags":1,"native":1,"bps":4800,"parity":"N","stopbits":1,"cycle":1.00}]}

{"class":"WATCH","enable":true,"json":false,"nmea":false,"raw":0,"scaled":false,"timing":false,"split24":false,"pps":false}

?POLL;

{"class":"POLL","time":"2018-03-02T21:14:54.873Z","active":1,"tpv":[{"class":"TPV","device":"/dev/pts/10","mode":3,"time":"2005-06-09T14:34:53.280Z","ept":0.005,"lat":46.498332203,"lon":7.567403907,"alt":1343.165,"epx":24.829,"epy":25.326,"epv":78.615,"track":10.3788,"speed":0.091,"climb":-0.085,"eps":50.65,"epc":157.23}],"gst":[{"class":"GST","device":"/dev/pts/10","time":"1970-01-01T00:00:00.000Z","rms":0.000,"major":0.000,"minor":0.000,"orient":0.000,"lat":0.000,"lon":0.000,"alt":0.000}],"sky":[{"class":"SKY","device":"/dev/pts/10","time":"2005-06-09T14:34:53.280Z","xdop":1.66,"ydop":1.69,"vdop":3.42,"tdop":3.05,"hdop":2.40,"gdop":5.15,"pdop":4.16,"satellites":[{"PRN":23,"el":6,"az":84,"ss":0,"used":false},{"PRN":28,"el":7,"az":160,"ss":0,"used":false},{"PRN":8,"el":66,"az":189,"ss":45,"used":true},{"PRN":29,"el":13,"az":273,"ss":0,"used":false},{"PRN":10,"el":51,"az":304,"ss":29,"used":true},{"PRN":4,"el":15,"az":199,"ss":36,"used":true},{"PRN":2,"el":34,"az":241,"ss":41,"used":true},{"PRN":27,"el":71,"az":76,"ss":42,"used":true}]}]}

?POLL;

{"class":"POLL","time":"2018-03-02T21:14:58.856Z","active":1,"tpv":[{"class":"TPV","device":"/dev/pts/10","mode":3,"time":"2005-06-09T14:34:53.280Z","ept":0.005,"lat":46.498332203,"lon":7.567403907,"alt":1343.165,"epx":24.829,"epy":25.326,"epv":78.615,"track":10.3788,"speed":0.091,"climb":-0.085,"eps":50.65,"epc":157.23}],"gst":[{"class":"GST","device":"/dev/pts/10","time":"1970-01-01T00:00:00.000Z","rms":0.000,"major":0.000,"minor":0.000,"orient":0.000,"lat":0.000,"lon":0.000,"alt":0.000}],"sky":[{"class":"SKY","device":"/dev/pts/10","time":"2005-06-09T14:34:53.280Z","xdop":1.66,"ydop":1.69,"vdop":3.42,"tdop":3.05,"hdop":2.40,"gdop":5.15,"pdop":4.16,"satellites":[{"PRN":23,"el":6,"az":84,"ss":0,"used":false},{"PRN":28,"el":7,"az":160,"ss":0,"used":false},{"PRN":8,"el":66,"az":189,"ss":45,"used":true},{"PRN":29,"el":13,"az":273,"ss":0,"used":false},{"PRN":10,"el":51,"az":304,"ss":29,"used":true},{"PRN":4,"el":15,"az":199,"ss":36,"used":true},{"PRN":2,"el":34,"az":241,"ss":41,"used":true},{"PRN":27,"el":71,"az":76,"ss":42,"used":true}]}]}