I have a tuple like: t= ({'count': 5L},)
Here i don't want to use for loop but want to get value as 5.Then how can i do it?
I tried with coverting to string then using JSON.
import json
s = str(t)
d = json.loads(s)
I got error:ValueError: No JSON object could be decoded
And winded up with no result.
I want to get the value of count as integer 5 & store in a variable.
Anyone having any idea?
No need to use Json since it is already your tuple is already a Python data structure.
If you know the index of the item in the tuple, and you know the keyname you can access it directly using:
t = ({'count': 5L},)
value = int(t[0]['count'])
Related
I would like to create an Alexa skill using Python to use data uploaded by sensors to Thingspeak. The cases where I only use one specific value is quite easy, the response from Thingspeak is the value only. When I want to use several values, in my case to sum up the athmospheric pressure to determine tendencies, teh response is a json object like this:
{"channel":{"id":293367,"name":"Weather Station","description":"My first attempt to build a weather station based on an ESP8266 and some common sensors.","latitude":"51.473509","longitude":"7.355569","field1":"humidity","field2":"pressure","field3":"lux","field4":"rssi","field5":"temp","field6":"uv","field7":"voltage","field8":"radiation","created_at":"2017-06-25T07:35:37Z","updated_at":"2018-08-04T12:11:22Z","elevation":"121","last_entry_id":1812},"feeds":
[{"created_at":"2018-10-21T18:11:45Z","entry_id":1713,"field2":"1025.62"},
{"created_at":"2018-10-21T18:12:05Z","entry_id":1714,"field2":"1025.58"},
{"created_at":"2018-10-21T18:12:25Z","entry_id":1715,"field2":"1025.56"},
{"created_at":"2018-10-21T18:12:45Z","entry_id":1716,"field2":"1025.65"},
{"created_at":"2018-10-21T18:13:05Z","entry_id":1717,"field2":"1025.58"},
{"created_at":"2018-10-21T18:13:25Z","entry_id":1718,"field2":"1025.63"}]
I now started with
f = urllib.urlopen(link) # Get your data
json_object = json.load(f)
for entry in json_object[0]
print entry["field2"]
The json object is a bit recursive, it is a list containing a list with an element with an array as the value.
Now I am not quite sure how to iterate over the values of the key "field2" in the array. I am quite new to Python and also json. Perhaps anyone can help me out?
Thanks in advance!
This has nothing to do with json - once the json string parsed by json.load(), what you get is a plain python object (usually a dict, sometimes a list, rarely - but this would be legal - a string, int, float, boolean or None).
it is a list containing a list with an element with an array as the value.
Actually it's a dict with two keys "channel" and "feeds". The first one has another dict for value, and the second a list of dicts. How to use dicts and lists is extensively documented FWIW
https://docs.python.org/3/tutorial/datastructures.html#dictionaries
https://docs.python.org/3/library/stdtypes.html#mapping-types-dict
https://docs.python.org/3/tutorial/introduction.html#lists
https://docs.python.org/3/library/stdtypes.html#sequence-types-list-tuple-range
Here the values you're looking for are stored under the "field2" keys of the dicts in the "feeds" key, so what you want is:
# get the list stored under the "feeds" key
feeds = json_object["feeds"]
# iterate over the list:
for feed in feeds:
# get the value for the "field2" key
print feed["field2"]
You have a dictionary. Use key to access the value
Ex:
json_object = {"channel":{"id":293367,"name":"Weather Station","description":"My first attempt to build a weather station based on an ESP8266 and some common sensors.","latitude":"51.473509","longitude":"7.355569","field1":"humidity","field2":"pressure","field3":"lux","field4":"rssi","field5":"temp","field6":"uv","field7":"voltage","field8":"radiation","created_at":"2017-06-25T07:35:37Z","updated_at":"2018-08-04T12:11:22Z","elevation":"121","last_entry_id":1812},"feeds":
[{"created_at":"2018-10-21T18:11:45Z","entry_id":1713,"field2":"1025.62"},
{"created_at":"2018-10-21T18:12:05Z","entry_id":1714,"field2":"1025.58"},
{"created_at":"2018-10-21T18:12:25Z","entry_id":1715,"field2":"1025.56"},
{"created_at":"2018-10-21T18:12:45Z","entry_id":1716,"field2":"1025.65"},
{"created_at":"2018-10-21T18:13:05Z","entry_id":1717,"field2":"1025.58"},
{"created_at":"2018-10-21T18:13:25Z","entry_id":1718,"field2":"1025.63"}]}
for entry in json_object["feeds"]:
print entry["field2"]
Output:
1025.62
1025.58
1025.56
1025.65
1025.58
1025.63
I just figured it out, it was just like expected.
You have to get the entries array from the dict and than iterate over the list of items and print the value to the key field2.
# Get entries from the response
entries = json_object["feeds"]
# Iterate through each measurement and print value
for entry in entries:
print entry['field2']
I tried to use the openweathermap.org rest API inside python. When I tried to assign a key from the dictionary I created with the JSON data this error occurred.
-list indices must be integers or slices, not str
I'm new to python and I couldn't find a solution to this matter.
The code snip I wrote:
import requests
from pprint import pprint
lokka = str(input("What is the location you need information of?"))
#takes the location as "lokka"
hellload = requests.get("http://api.openweathermap.org/data/2.5/weather?q="+ lokka +"&appid=xxxxxxxxxxxxxxxxx&units=metric")
#the rest api's load will be taken to the account of hellload
jputha = hellload.json()
#json data will be converted to a dictionary
#print (jputha)
#---------------------------------------------------------
#from now onward I'll be kickin the hell out the jsons
long = str(jputha["coord"]["lon"])
lat = str(jputha["coord"]["lat"])
wthr = str(jputha["weather"]["main"])
temp = str(jputha["main"]["temp"])
winspd = str(jputha["wind"]["speed"])
print(long)
print(lat)
print(wthr)
print(temp)
print(winspd)
According to OpenWeatherMap's documentation, the JSON response from the API looks like this:
{"coord":
{"lon":145.77,"lat":-16.92},
"weather":[{"id":803,"main":"Clouds","description":"broken clouds","icon":"04n"}],
"base":"cmc stations",
"main":{"temp":293.25,"pressure":1019,"humidity":83,"temp_min":289.82,"temp_max":295.37},
"wind":{"speed":5.1,"deg":150},
"clouds":{"all":75},
"rain":{"3h":3},
"dt":1435658272,
"sys":{"type":1,"id":8166,"message":0.0166,"country":"AU","sunrise":1435610796,"sunset":1435650870},
"id":2172797,
"name":"Cairns",
"cod":200}
where the weather key contains a list of dicts rather than a dict, so if you simply want the first weather data from the list, you should use [0] to obtain the value of the first index instead:
wthr = str(jputha["weather"][0]["main"])
I'm using the Temboo Twitter API for Python to download tweets. I want to interpret them but am having trouble pulling out certain values. It returns each tweet in JSON. I want to take certain items out of the JSON and pass them over for further use (favorite_count in the example below). print (json.loads(array)) works fine but the following line print (data['favorite_count']) does not and returns and error list indices must be integers, not str. Giving an integer value just returns and out of range index error.
Would really appreciate a solution to extracting a certain section from the JSON list.
homeTimelineResults = homeTimelineChoreo.execute_with_results(homeTimelineInputs)
if __name__ == "__main__":
array = homeTimelineResults.get_Response()
data = json.loads(array)
print (json.loads(array))
print (data['favorite_count'])
From the error you are getting, I would guess that data is a list, not a dictionary. What you could do then is something along these lines:
import collections
homeTimelineResults = homeTimelineChoreo.execute_with_results(homeTimelineInputs)
if __name__ == "__main__":
array = homeTimelineResults.get_Response()
data = json.loads(array)
if data and isinstance(data, collections.Iterable) and not isinstance(data, (str, bytes)):
result = data.pop(0)
print(result['favorite_count'])
Basically we are checking that data is indeed a list or tuple or something you can iterate over (but not a string or a sequence of bytes) and that it is not empty. This is the meaning of the if statement after data = json.loads(array).
If that is indeed the case, we pop the first element and - assuming that it is a dictionary - access its 'favorite_count' key. Of course this assumption is pretty dangerous and one should be a bit more careful and check first :-)
I am attempting to generate a URL link in the following format using urllib and urlencode.
<img src=page.psp?KEY=%28SpecA%2CSpecB%29&VALUE=1&KEY=%28SpecA%2C%28SpecB%2CSpecC%29%29&VALUE=2>
I'm trying to use data from my dictionary to input into the urllib.urlencode() function however, I need to get it into a format where the keys and values have a variable name, like below. So the keys from my dictionary will = NODE and values will = VALUE.
wanted = urllib.urlencode( [("KEY",v1),("VALUE",v2)] )
req.write( "<a href=page.psp?%s>" % (s) );
The problem I am having is that I want the URL as above and instead I am getting what is below, rather than KEY=(SpecA,SpecB) NODE=1, KEY=(SpecA,SpecB,SpecC) NODE=2 which is what I want.
KEY=%28SpecA%2CSpecB%29%2C%28%28SpecA%2CSpecB%29%2CSpecC%29&VALUE=1%2C2
So far I have extracted keys and values from the dictionary, extracted into tuples, lists, strings and also tried dict.items() but it hasn't helped much as I still can't get it to go into the format I want. Also I am doing this using Python server pages which is why I keep having to print things as a string due to constant string errors. This is part of what I have so far:
k = (str(dict))
ver1 = dict.keys()
ver2 = dict.values()
new = urllib.urlencode(function)
f = urllib.urlopen("page.psp?%s" % new)
I am wondering what I need to change in terms of extracting values from the dictionary/converting them to different formats in order to get the output I want? Any help would be appreciated and I can add more of my code (as messy as it has become) if need be. Thanks.
This should give you the format you want:
data = {
'(SpecA,SpecB)': 1,
'(SpecA,SpecB,SpecC)': 2,
}
params = []
for k,v in data.iteritems():
params.append(('KEY', k))
params.append(('VALUE', v))
new = urllib.urlencode(params)
Note that the KEY/VALUE pairings may not be the order you want, given that dicts are unordered.
I know its kind of trivial thing to ask...but i'm a new bee to python.
Here is a json string
reply = {u'f': [{u'v': u'0'}]}
How to parse out value 0 from it using python.
i tried like
count = reply['rows'][0]['v']
but it not working
count = reply['f'][0]['v'] should work I believe.
reply is a dictionary. As such, you need to use the dictionary keys to access the data. In this case, the key is 'f', not 'rows'.
If you had valid JSON, you could use the simplejson module:
from simplejson import loads, dumps
my_dict = loads(my_json_serialized_string)
and then you can access the python dict, e.g.,:
print my_dict.items()
print my_dict.keys()
print my_dict.values()
#lets assume 'rows' exists as a key, and the value is a list, and the first item of that list is a dict that contains the key 'v':
print my_dict['rows'][0]['v']
and you can even change the dict, and serialize it as a valid JSON string:
my_dict['my_key'] = 'my_value'
my_other_json_serialized_string = dumps(my_dict)