python how to open json file when app loads code example

Example: how to create json file in python

#import the json module
import json 

#create a dictionary which we can add to a json file
dictionary ={ 
    "name" : "sathiyajith", 
    "rollno" : 56, 
    "cgpa" : 8.6, 
    "phonenumber" : "9976770500"
} 

#open an object with following inputs: 'name_of_file.json', 'w'
#dump the content fromt he dictionary into the outfile
with open("sample.json", "w") as outfile: 
    json.dump(dictionary, outfile)