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Invalid json return when using get_device_reading #12
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Assuming that you are using Python 2.x and talking to the 'Weather' module. I am not clear what you are intending. The returned dictionary in this case has two entries: 'Value' and 'Time'. Below is an example how to work with each of those entries: import logging
import fhem
logging.basicConfig()
fh=fhem.Fhem('your-server')
ans_dict=fh.get_device_reading("myWeather", "fc1_date")
# ans_dict is now {u'Value': u'26 Dec 2018', u'Time': datetime.datetime(2018, 12, 26, 7, 42, 3)}
myDate=ans_dict['Value']
print("Date:" myDate)
# Output: print("Date:" myDate)
myTime=ans_dict['Time']
# myTime is now a datetime.datetime object. Use strftime to format a string
print(myTime.strftime("%Y-%m-%d %H:%M:%S"))
# Output: 2018-12-26 07:42:03
# or, using a different formatting string:
print(myTime.strftime("Time: %H:%M:%S"))
# Output: Time: 07:42:03 See here for more info on strftime's formatting options. |
Hallo, Nevertheless i have another problem.
Adding a sleep 1 between the get does not help. |
Yes, there seems to be a problem with the new get API by @Andre0512, which uses non-blocking telnet-IO, causing the exception. I have to investigate further: either we change get() to use blocking IO, which should be safe (@Andre0512: why did you decide to set So for now:
I will look into a fix for that exception, this will require an update for python-fhem, |
Ok, I am preparing 0.6.1 which will use blocking IO, if protocol is telnet. That should solve the issue with those exceptions. |
|
Thanks again for your fantastic work!
|
You need to look at the dict that's returned. In this case, it's more complex: Fhem has a bit of history, and datatypes tend to grow ;-) temp_1_wday = fh.get_device_reading("myWeather", "fc1_day_of_week")
print(temp_1_wday)
# Output:
#{'day_of_week': {'Value': 'Wed', 'Time': datetime.datetime(2018, 12, 26, 12, 22, 4)}, 'fc1_day_of_week': {'Value': 'Wed', 'Time': datetime.datetime(2018, 12, 26, 12, 22, 4)}}
# So there are two dictionaries nested, one entry is 'day_of_week' and one is 'fc1_day_of_week'.
# This gets the first nested dict:
dict1=temp_1_wday['day_of_week']
# then:
print(dict1)
# Output: {'Value': 'Wed', 'Time': datetime.datetime(2018, 12, 26, 12, 22, 4)}
# So finally:
print(dict1['Value'])
# Output: Wed |
Generally, it is a good idea to open new issues for new problems. Then it's easier for others to see what it's all about. |
You are right (concerning opening a new issue). |
Hi,
Using the following code:
date_1 = str(fh.get_device_reading("myWeather", "fc1_date"))
print ("Date:" date_1)
I always get a json return with "u", and the datetime not in '':
Date:{u'Value': u'25 Dec 2018', u'Time': datetime.datetime(2018, 12, 25, 16, 46, 8)}
I used str() to convert the dict return as a string.
Thanks
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