CircuitPython

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try:
    import ujson as json
except ImportError:
    try:
        import json
    except ImportError:
        print("SKIP")
        raise SystemExit

def my_print(o):
    if isinstance(o, dict):
        print('sorted dict', sorted(o.items()))
    else:
        print(o)

my_print(json.loads('null'))
my_print(json.loads('false'))
my_print(json.loads('true'))
my_print(json.loads('1'))
my_print(json.loads('-2'))
my_print(json.loads('"abc\\u0064e"'))
my_print(json.loads('[]'))
my_print(json.loads('[null]'))
my_print(json.loads('[null,false,true]'))
my_print(json.loads(' [ null , false , true ] '))
my_print(json.loads('{}'))
my_print(json.loads('{"a":true}'))
my_print(json.loads('{"a":null, "b":false, "c":true}'))
my_print(json.loads('{"a":[], "b":[1], "c":{"3":4}}'))
my_print(json.loads('"abc\\bdef"'))
my_print(json.loads('"abc\\fdef"'))
my_print(json.loads('"abc\\ndef"'))
my_print(json.loads('"abc\\rdef"'))
my_print(json.loads('"abc\\tdef"'))
my_print(json.loads('"abc\\uabcd"'))

# whitespace handling
my_print(json.loads('{\n\t"a":[]\r\n, "b":[1], "c":{"3":4}     \n\r\t\r\r\r\n}'))

# loading nothing should raise exception
try:
    json.loads('')
except ValueError:
    print('ValueError')

# string which is not closed
try:
    my_print(json.loads('"abc'))
except ValueError:
    print('ValueError')

# unaccompanied closing brace
try:
    my_print(json.loads(']'))
except ValueError:
    print('ValueError')

# unspecified object type
try:
    my_print(json.loads('a'))
except ValueError:
    print('ValueError')

# bad property name
try:
    my_print(json.loads('{{}:"abc"}'))
except ValueError:
    print('ValueError')

# unexpected characters after white space
try:
    my_print(json.loads('[null]   a'))
except ValueError:
    print('ValueError')