我尝试用树莓派从ds18b20温度传感器读取数据并将其推入xive。
在控制台中执行一些先决条件和python文件:
sudo modprobe w1-gpio && sudo modprobe w1_therm
source .envs/venv/bin/activate
FEED_ID=244127069 API_KEY=Nqeje SENSOR_ID=28-00000539324e python xively_ds18b20.py
此后,出现以下错误:
Traceback (most recent call last):
File "xively_ds18b20.py", line 59, in <module>
run()
File "xively_ds18b20.py", line 42, in run
feed = api.feeds.get(FEED_ID)
File "/home/pi/xively_tutorial/.envs/venv/local/lib/python2.7/site-packages/xively/managers.py", line 266, in get
feed = self._coerce_feed(data)
File "/home/pi/xively_tutorial/.envs/venv/local/lib/python2.7/site-packages/xively/managers.py", line 289, in _coerce_feed
feed = Feed(**feed_data)
TypeError: __init__() got an unexpected keyword argument 'email'
我该如何解决这个错误?这很有趣,但是在另一台Raspberry Pi上却可以运行...
这是我的代码(xively_ds18b20.py):
#!/usr/bin/env python
import os
import xively
import subprocess
import time
import datetime
import requests
FEED_ID = os.environ["FEED_ID"]
API_KEY = os.environ["API_KEY"]
SENSOR_ID_PRE = os.environ["SENSOR_ID"]
SENSOR_ID = SENSOR_ID_PRE[-7:]
# initialize api client
api = xively.XivelyAPIClient(API_KEY)
# function to read the temperature from ds18b20 temperature sensor on i2c
def read_temperature():
tempfile = open("/sys/bus/w1/devices/"+SENSOR_ID_PRE+"/w1_slave")
thetext = tempfile.read()
tempfile.close()
tempdata = thetext.split("\n")[1].split(" ")[9]
temperature = float(tempdata[2:])
temperature = temperature / 1000
return temperature
# function to return a datastream object. This either creates a new datastream,
# or returns an existing one
def get_datastream(feed):
try:
datastream = feed.datastreams.get("PiTemperature"+SENSOR_ID)
return datastream
except:
datastream = feed.datastreams.create("PiTemperature"+SENSOR_ID, tags="temperature")
return datastream
# main program entry point - runs continuously updating our datastream with the
# latest temperature reading
def run():
feed = api.feeds.get(FEED_ID)
datastream = get_datastream(feed)
datastream.max_value = None
datastream.min_value = None
while True:
degreesCelcius = read_temperature()
datastream.current_value = degreesCelcius
datastream.at = datetime.datetime.utcnow()
try:
datastream.update()
except requests.HTTPError as e:
print "HTTPError({0}): {1}".format(e.errno, e.strerror)
time.sleep(10)
run()
根据此错误报告,您可以通过从Feed元数据中删除电子邮件地址来解决此问题:
当我从Feed元数据中删除我的电子邮件地址(通过工作台)并重新运行时,
api.feeds.get(FEED_ID)
它工作正常。
然而,当我看在GitHub上最新的源代码,我可以看到email
被支持:
class Feed(Base):
"""Xively Feed, which can contain a number of Datastreams.
:param title: A descriptive name for the feed
:param description: A longer text description of the feed
:param website: The URL of a website which is relevant to this feed e.g.
home page
:param email: A public contact email address for the provider of this feed
:param tags: Tagged metadata about the environment (characters ' " and
commas will be stripped out)
:param location: :class:`.Location` object for this feed
:param private: Whether the environment is private or not.
:type private: bool
Usage::
>>> import xively
>>> xively.Feed(title="Xively Office environment")
<xively.Feed(None)>
"""
VERSION = "1.0.0"
# Set id and feed directly as they aren't part of state. By setting them on
# the class they won't get entered into _data and will be set on the
# instance itself.
id = None
feed = None
_datastreams_manager = None
def __init__(self, title, description=None, website=None, email=None,
tags=None, location=None, private=None, datastreams=None):
看来这个错误是最近才修复的(6月27日)。您可以尝试xively-python
从github提取最新版本,并使用它代替当前版本吗?
本文收集自互联网,转载请注明来源。
如有侵权,请联系[email protected] 删除。
我来说两句