with open('./test.json', 'w', encoding='utf8') as f:
    json.dump({"Login": "dima", "Id": 123, "email": "123123", "Country": "Russia", "City": "Moscow"},sort_keys=True, fp=f)
with open('./test.json', 'r', encoding='utf8') as f:
    print(json.load(f))
    f.seek(0)
    print(f.read())

 >>> import json
>>> d = {'pos1':'value1', 'pos2':'value2', 'pos3':'value3', 'pos4':'value4', 'pos5':'value5'}
>>> output_string = json.dumps(d)
>>> output_string
'{"pos3": "value3", "pos1": "value1", "pos4": "value4", "pos2": "value2", "pos5": "value5"}'
>>> output_file = open(r'd:\text.txt','w')
>>> output_file.write(output_string)
90
>>> output_file.close()