我身边的另一个新手问题:) 我试着查一下,但在这种情况下我找不到任何有意义的东西。 我有这个代码在正常情况下工作正常。
import automationhat
import bluetooth
import time
import sys
import telegram
bot = telegram.Bot(token='56915444444:AAEzP5jy-pMD3ZME0twxY5bXkxxxxxxxxxxxxxxxxxxd_U')
# Import Adafruit IO MQTT client.
from Adafruit_IO import MQTTClient
ADAFRUIT_IO_KEY = '73c755488accccccc361a506f700000002ba'
ADAFRUIT_IO_USERNAME = 'flxxxxxxxx'
def connected(client):
print('Connected to Adafruit IO! Listening for LockReg changes...')
# Subscribe to changes on a feed named LockReg.
client.subscribe('LockReg')
def disconnected(client):
print('Disconnected from Adafruit IO!')
sys.exit(1)
def message(client, feed_id, payload, retain):
print('Feed {0} received new value: {1}'.format(feed_id, payload))
client = MQTTClient(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)
# Setup the callback functions defined above.
client.on_connect = connected
client.on_disconnect = disconnected
client.on_message = message
PHONES = ['B0:xx:2D:x0:C9:xx', 'xx:8D:08:xx:C3:7C', 'xx:AB:37:EA:93:xx']
while True:
print "Checking " + time.strftime("%a, %d %b %Y %H:%M:%S", time.gmtime())
for device in PHONES:
result = bluetooth.lookup_name(device, timeout=5)
if (result != None):
# Connect to the Adafruit IO server.
client.connect()
print('Door unlocked. Nearby: %s (%s)' % (result, device))
client.publish('lock.reg', result)
automationhat.relay.one.on()
time.sleep(2)
automationhat.relay.one.off()
bot.sendMessage(-26934xxxxx, result)
time.sleep(180)
else:
print "User out of range"
print('Door locked: No Bluetooth device detected. ' )
time.sleep(10)
我的systemd lock.service文件如下所示:
[Unit]
Description=My Lock Service
After=multi-user.target
[Service]
Type=idle
ExecStart=/usr/bin/python /home/pi/lockreg.py > /home/pi/lock.log 2>&1
[Install]
WantedBy=multi-user.target
但是如果在初始启动时从systemd执行,我会收到以下错误消息:
pi@raspberrypi:~ $ systemctl status lock.service
● lock.service - My Lock Service
Loaded: loaded (/lib/systemd/system/lock.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Sat 2018-06-16 18:33:32 CEST; 29min ago
Process: 492 ExecStart=/usr/bin/python /home/pi/lockreg.py > /home/pi/lock.log 2>&1 (
Main PID: 492 (code=exited, status=1/FAILURE)
Jun 16 18:33:29 raspberrypi systemd[1]: Started My Lock Service.
Jun 16 18:33:32 raspberrypi python[492]: Traceback (most recent call last):
Jun 16 18:33:32 raspberrypi python[492]: File "/home/pi/lockreg.py", line 11, in <mod
Jun 16 18:33:32 raspberrypi python[492]: import telegram
Jun 16 18:33:32 raspberrypi python[492]: ImportError: No module named telegram
Jun 16 18:33:32 raspberrypi systemd[1]: lock.service: Main process exited, code=exited,
Jun 16 18:33:32 raspberrypi systemd[1]: lock.service: Unit entered failed state.
Jun 16 18:33:32 raspberrypi systemd[1]: lock.service: Failed with result 'exit-code'.
从systemd执行时,以某种方式无法访问Telegram模块。为什么呢?
感谢您的一些提示 P上。
答案 0 :(得分:1)
有几种可能的错误。
可能只为用户telegram
安装pi
,而不是为所有用户全局安装/home/pi/.local/
。检查site-packages
以查看是否可以在那里找到电报。
如果没有,您可能希望将模块安装在系统范围的> python
Python 2.7.15 (default, May 11 2018, 15:54:10)
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> [p for p in sys.path if p.endswith('site-packages')]
['/usr/local/lib/python2.7/site-packages']
>>>
目录中。使用以下内容查找:
python
(它可能是一个不同的目录,因为我的/usr/local/bin
住在telegram
。)
然后检查site-packages
是否作为site-packages
目录中的文件或子目录安装。
它也可能是权限问题。 Systemd将您的程序作为特定用户ID运行。检查该特定用户是否可以读取telegram
目录和Systemd
子目录。
编辑: root
可以在两种模式下运行; 系统和用户。只有后者作为特定用户运行。我猜这个系统模式运行为lock.service
。从pi
文件的位置,我收集到您正在系统模式下使用systemd。根据您的意见,电报仅为用户python
安装 。因此root
正在运行telegram
不应该看到它,这正是您所体验的。
所以基本上你有两个选择:
root
。 (以pi
运行安装。)LoadBalancer
运行用户模式systemd。