Read python dict or yaml and call python function with arguments and objects

Question

To read the python dict below or its equivalent yaml and generate an equivalent python function call

mydict = {'RouteAdd': {'route_config': {'RouteConfig': {'table_name': 'my table', 'app_id': 'my app', 'nexthops': [{'NexthopInfo': {'nexthop_index': 2, 'nexthop_address': {'GatewayAddress': {'ethernet_mac': 'my mac', 'nexthop_ip': 'my ip'}}, 'if_name': 'my interface'}}]}}}} 

Its barley (for readability):

 RouteAdd: route_config: RouteConfig: app_id: "my app" nexthops: - NexthopInfo: if_name: "my interface" nexthop_address: GatewayAddress: ethernet_mac: "my mac" nexthop_ip: "my ip" nexthop_index: 2 table_name: "my table" 

I would like to read the above type of yaml or python dict and call like below:

 RouteAdd(route_config=Routeconfig(app_id="my app",nexthops=[NexthopInfo(if_name="my interface",nexthop_address=GatewayAddress(ethernet_mac="my mac",nexthop_ip="my ip"),nexthop_index=2)],table_name="my table")) 

Basically an alternative hierarchy is an object. What I inserted is a small clip. Looking for a recursive function that does this by reading either yaml or python dict, and converting it to the format above so that I can call and execute the function. Any help is much appreciated. thanks

Answer 1

Try the following:

 def call_dict(d): k, v = list(d.items())[0] # ('RouteAdd', {route_config: ...}) kwargs = {} for k2, v2 in v.items(): if isinstance(v2, dict): kwargs[k2] = call_dict(v2) elif isinstance(v2, list): kwargs[k2] = [(call_dict(v3) if isinstance(v3, dict) else v3) for v3 in v2] else: kwargs[k2] = v2 return globals()[k](**kwargs) 

Test:

 def test1(t_arg=None, t_arg2=None): return t_arg + sum(t_arg2) def test2(t_arg=None): return t_arg res = test1(t_arg=1, t_arg2=[test2(t_arg=2), test2(t_arg=3)]) print(res) # 6 test_dict = { 'test1': { 't_arg': 1, 't_arg2': [ {'test2': {'t_arg': 2}}, {'test2': {'t_arg': 3}}, ] } } res = call_dict(test_dict) print(res) # 6 

Upd:

Like a line of code:

 def str_of_code(d): k, v = list(d.items())[0] kwargs = {} for k2, v2 in v.items(): if isinstance(v2, dict): kwargs[k2] = str_of_code(v2) elif isinstance(v2, list): kwargs[k2] = '[{}]'.format(', '.join( (str_of_code(v3) if isinstance(v3, dict) else repr(v3)) for v3 in v2) ) else: kwargs[k2] = repr(v2) return '{}({})'.format(k, ', '.join('{}={}'.format(*i) for i in kwargs.items())) test_dict = { 'test1': { 't_arg': 1, 't_arg2': [ {'test2': {'t_arg': 2}}, {'test2': {'t_arg': 3}}, ] } } res = str_of_code(test_dict) print(res) # test1(t_arg=1, t_arg2=[test2(t_arg=2), test2(t_arg=3)]) 

Answer 2

I tried all the methods available on the forum, but for some reason no one developed the solution I was looking for. Consequently, as a beginner, he solved this by an unorthodox way of searching and replacing. If anyone has a better solution, submit it and I would like to use it.

 api_map_complete = {api: {'config': {'AddressConfig': {'unit': 0, 'port_name': "my_name", 'address': "my address", 'family': 2}}}} def dict_to_obj(mystr,flag): global api_string if re.search(':\(',mystr): if flag % 2 == 0: api_string=mystr.replace(":(","(",1) flag=flag+1 else: api_string=mystr.replace(":("," = (",1) flag=flag+1 dict_to_obj(api_string,flag) else: mystr=mystr.replace(":"," = ") mystr=mystr.replace(",",", ") api_string=mystr for combo in api_map_complete: api_name=combo.keys()[0] for k,v in combo.iteritems(): api_string=str(v) api_string=api_string.replace("{","(") api_string=api_string.replace("}",")") api_string=api_string.replace(" ","") api_string=api_string.replace(":'",":\"") api_string=api_string.replace("',","\",") api_string=api_string.replace("')","\")") api_string=api_string.replace("'","") dict_to_obj(api_string,1) #print api_string api_obj=api_name+api_string print api_obj