Python:json Library &. json file read-write __js

API

API	Annotation
Json.dumps ()	Converts a dictionary in Python to a string
Json.loads ()	Convert a string to a dictionary
Json.dump (,)	Write data to the JSON file
Json.load ()	To open the file and transform the string into a data type

Test

Import JSON

dict_1 = {' City ': ' Nanjing ', ' Year ': 2018, ' Province ': ' Jiangshu '}


# dumps: Convert a dictionary in Python to a string
str_1 = Json.dumps (dict_1)
assert isinstance (str_1, str)

# Loads: Convert a string to a dictionary
dict_2 = json.loads (str_1) 
  
   assert isinstance (dict_2, dict)

# Dump: Writes data to the JSON file
with open ("./test.json", "W") as Dump_f:
    json.dump ( Dict_1, Dump_f)

# Load: Opens the file and transforms the string to the data type with
open ("./test.json", "R") as Load_f:
    dict_3 = Json.load ( Load_f)
    assert Isinstance (Dict_3, Dict)
  

[1] Python reads and writes JSON files