Print unique JSON keys in dot notation using Python

I'd recommend using a recursive generator function, using the yield statement rather than building a list internally. In Python 2.6+, the following works:

import jsonjson_data = json.load(open("myfile.json"))def walk_keys(obj, path=""):    if isinstance(obj, dict):        for k, v in obj.iteritems():            for r in walk_keys(v, path + "." + k if path else k):                yield r    elif isinstance(obj, list):        for i, v in enumerate(obj):            s = "[" + str(i) + "]"            for r in walk_keys(v, path + s if path else s):                yield r    else:        yield pathfor s in sorted(walk_keys(json_data)):    print s

In Python 3.x, you can use yield from as syntactic sugar for recursive generation, as follows:

import jsonjson_data = json.load(open("myfile.json"))def walk_keys(obj, path=""):    if isinstance(obj, dict):        for k, v in obj.items():            yield from walk_keys(v, path + "." + k if path else k)    elif isinstance(obj, list):        for i, v in enumerate(obj):            s = "[" + str(i) + "]"            yield from walk_keys(v, path + s if path else s)    else:        yield pathfor s in sorted(walk_keys(json_data)):    print(s)

Drawing off of MTADD's guidance I put together the following:

import jsonjson_file_path = "myfile.json"json_data = json.load(open(json_file_path))def walk_keys(obj, path = ""):    if isinstance(obj, dict):        for k, v in obj.iteritems():            for r in walk_keys(v, path + "." + k if path else k):                yield r    elif isinstance(obj, list):        for i, v in enumerate(obj):            s = ""            for r in walk_keys(v, path if path else s):                yield r    else:        yield pathall_keys = list(set(walk_keys(json_data)))print '\n'.join([str(x) for x in sorted(all_keys)])

The results match as expected

abc.dc.ec.f.xc.f.y