Example for getting data from json file, made up of data dictionary and list

convjson.py

#Convjson, an example for getting data from a json file
#25/03/2021
#By Codarren Velvindron
#Licence: MIT

import json

#we init an empty dictionary
crypto_dictionary = {}

#we read the local .json file
filename = 'currency_limits_25032021.json'

#we create a function to convert json to dictionary
def __convert_to_dict(filename,dictionary): #convert object to dictionary
    """ from a .json filename, we return a dictionary """
    try:
        with open(filename) as json_file:
            data = json.load(json_file)
        dictionary.update(data)
    except JSONDecodeError:
        print ('JSON decode failed')

#We run our json file through the converter
__convert_to_dict(filename,crypto_dictionary)

#Our global crypto_dictionary is now updated.
#print (crypto_dictionary)
data_dict = crypto_dictionary['data']
#print (data)

pairs = data_dict['pairs']
#print(pairs)
#print(type (pairs))

#Start by checking the size of the pairs list
size = len(pairs)
print(size)

#we now loop through it
for i in range(0, size):
    #print (pairs[i])
    crypto = pairs[i]['symbol1']
    market = pairs[i]['symbol2']
    maxprice = pairs[i]['maxPrice']
    if ('BTT' in crypto): #if we want BTT as our data
        print (crypto,market,maxprice)

sample json file