Json fipy afer urequest

[Tgasser]

Hello,
I wish you to enjoy the Christmas holiday.

I'm coming to you because I can't get them back to you because I wish I could. I do a get on api that returns a JSON object with objects inside. I would like to retrieve the data and store it but the conversion doesn't work. Do you have an idea?

Thanks ! :)

[andreas]

Dear @Tgasser,

line 133 obviously needs an import json statement in order to be able to invoke the loads function on the module level.

With kind regards,
Andreas.

[Tgasser]

@andreas Sorry, I made a mistake with the picture, this is the correct screenshot :

the lib use is https://github.com/micropython/micropython-lib/blob/master/urequests/urequests.py

Thank you for your help.

[andreas]

This looks like a programming error on line 77 within your main.py. Without seeing the code, there's no way to reason about the error.

[Tgasser]

@andreas You have to look at the library I've linked to and here's my full code if it helps. Thanks :)

lte = LTE()
lte.init()
rtc= machine.RTC()

def connect_to_LTE():

    lte.send_at_cmd('AT+CMEE=2')
    lte.send_at_cmd('AT+CREG?')

    lte.attach(band=8,apn="iot.1nce.net")
    lte.send_at_cmd('AT+COPS=1,2,"26201",9')
    lte.send_at_cmd('AT+CEREG=2')
    #lte.send_at_cmd('AT+CGDCONT=0')
    i=0
    while not lte.isattached():
        time.sleep(0.5)
        print(".", end="")
        i=i+1
        if i%3 == 0:
            print(lte.send_at_cmd('AT+COPS=1,2,"26201",9'))
            print(lte.send_at_cmd('AT+CSQ'))

    print("\nAttached!")

    print(lte.send_at_cmd("AT+CSQ"))

    lte.connect()       # start a data session and obtain an IP address
    while not lte.isconnected():
        time.sleep(0.5)
        print("-", end="")
    print("Connected!")
    pycom.rgbled(0xd5362a) # red

def request():
    print("DSN :")
    print(usocket.dnsserver())
    usocket.dnsserver(0, '8.8.8.8')
    usocket.dnsserver(1, '10.0.0.1')
    print(usocket.dnsserver())
    flag=False
    while(flag==False):
        try :
            print("Using library urequest...")
            r= urequest.get("http://api.open-notify.org/iss-now.json?callback=?")
            print("Return:", r.text) #r.content
            flag=True
            pycom.rgbled(0x7ed446) # green
            return r
        except OSError as err:
            print("OUPS ! OS Error {0}".format(err))

def deconnect_to_LTE():
    try :
        pycom.rgbled(0xd5362a) # red
        lte.disconnect()
        print("Disconnected!")
        lte.detach()
        print("Dettached!")
        lte.deinit()
    except OSError as err:
        print('Oups..')

connect_to_LTE()
r=request()
deconnect_to_LTE()

print(json.loads(r))

[jcaron]

@Tgasser please give matching source and errors/logs, and correctly format source code by putting ``` alone one a line before and after your code.

As it stands, line numbering of the errors and your code don’t quite seem to match.

[andreas]

Dear @Tgasser,

the code you are showing should grok with the NameError: name 'json' isn't defined error again.

You have to look at the library I've linked to and here's my full code if it helps.

I don't see that error coming from the urequests module. At least, you didn't show any Python traceback indicating so.

AttributeError: 'str' object has no attribute 'json'

is even more strange to me.

Are you sure you are running only this code on the device?

With kind regards,
Andreas.

[Tgasser]

Thank you for your help and Happy New Year.
It's all code this time and well formatted.

from network import LTE
from machine import Timer
import time
import sys
import machine
from machine import Pin

import usocket
import urequest

from network import Bluetooth
from network import LTE
import ubinascii

import time
import sys
import machine
from machine import Pin

import usocket
import urequest

from network import Bluetooth

from machine import SPI, Pin
from ssd1306 import SSD1306_SPI as ssd

import utime
import pycom
import json
import ujson


pycom.heartbeat(False)

lte = LTE()
lte.init()
rtc= machine.RTC()

def connect_to_LTE():

   lte.send_at_cmd('AT+CMEE=2')
   lte.send_at_cmd('AT+CREG?')

   lte.attach(band=8,apn="iot.1nce.net")
   lte.send_at_cmd('AT+COPS=1,2,"26201",9')
   lte.send_at_cmd('AT+CEREG=2')
   #lte.send_at_cmd('AT+CGDCONT=0')
   i=0
   while not lte.isattached():
       time.sleep(0.5)
       print(".", end="")
       i=i+1
       if i%3 == 0:
           print(lte.send_at_cmd('AT+COPS=1,2,"26201",9'))
           print(lte.send_at_cmd('AT+CSQ'))

   print("\nAttached!")

   print(lte.send_at_cmd("AT+CSQ"))

   lte.connect()       # start a data session and obtain an IP address
   while not lte.isconnected():
       time.sleep(0.5)
       print("-", end="")
   print("Connected!")
   pycom.rgbled(0xd5362a) # red

def request():
   print("DSN :")
   print(usocket.dnsserver())
   usocket.dnsserver(0, '8.8.8.8')
   usocket.dnsserver(1, '10.0.0.1')
   print(usocket.dnsserver())
   flag=False
   while(flag==False):
       try :
           print("Using library urequest...")
           r= urequest.get("http://api.open-notify.org/iss-now.json?callback=?")
           print("Return:", r.text) #r.content
           flag=True
           pycom.rgbled(0x7ed446) # green
           return r
       except OSError as err:
           print("OUPS ! OS Error {0}".format(err))

def deconnect_to_LTE():
   try :
       pycom.rgbled(0xd5362a) # red
       lte.disconnect()
       print("Disconnected!")
       lte.detach()
       print("Dettached!")
       lte.deinit()
   except OSError as err:
       print('Oups..')

def timestamp():
   print(rtc.ntp_sync("0.pool.ntp.org") ) # printing None
   timestamp = utime.localtime(utime.time()) #printing (2000, 1, 1, 0, 20, 16, 5, 1) but i would like to have  (2019, 12, 24, 12, 36, xx, xx, xx)
   print(timestamp)
   return timestamp

def is_known():
   flag=-1
   for i in range(0, device_found):
       check=ubinascii.hexlify(adv.mac)
       if (check == list_device[i][1]):
           flag = i
   return flag

def is_flower_care():
   name=bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)
   if(name == 'Flower care'):
       print(name)
       return True
   else:
       return False

check_time = 60 #second
list_device = []
device_found = 0

spi = SPI(0, SPI.MASTER, baudrate=100000, polarity=0, phase=0)
disp = ssd(128,64,spi,Pin('P9'),Pin('P8'),Pin('P22'))
disp.text('I\'m ready',0,0)
disp.show()

connect_to_LTE()
r=request()
deconnect_to_LTE()

print(json.loads(r.text)) #line 134

[crumble]

@Tgasser

r does nor contain valid JSON,

The valid part is surrounded by ?()
If you cannot fix the web service, you have to remove the invalid part before using it as a parameter