CiscoConfParse to json output

[anna]

why this printing on screen json format, however file dumps is not working.
dumping code

data = json.dumps(result, indent=4)
    s = json.dumps(data)
    open("out.json","w").write(s)

sample output

Output:
"{\n    \"interfaces\": {\n        \"Aux0/0/1\": {\n            \"description\": \"not set\",\n            \"qos-profile\": \"n/a\",\n            \"vlan-type\": \"n/a\"\n        },\n        \"Eth-Trunk1\": {\n            \"description\": \"TO DEL-CON-S5328EI-SW-A5 Eth-Trunk2\",\n            \"qos-profile\": \"n/a\",\n            \"vlan-type\": \"n/a\"\n        },\n        \"Eth-Trunk1.50\": {\n            \"description\": \"not set\",\n            \"qos-profile\": \"n/a\",\n            \"vlan-type\": \"n/a\"\n        },\n        \"Eth-Trunk1.103\": {\n            \"description\": \"EXT_ILL_TTSL_Bhopal_5075509146\",\n            \"qos-profile\": \" 6Mb outbound identifier none\",\n            \"vlan-type\": \" dot1q 103\",\n            \"address\": \"111.93.33.9\",\n            \"netmask\": \"255.255.255.252\",\n            \"network\": \"111.93.33.8/30\"\n        },\n        \"Eth-Trunk1.120\": {\n            \"description\": \"EXT_COGENT E SERVICES PRIVATE LIMITED_12005744750_50MB\",\n            \"qos-profile\": \" 50Mbps outbound identifier none\",\n            \"vlan-type\": \" dot1q 120\",\n            \"address\": \"111.93.43.217\",\n            \"netmask\": \"255.255.255.252\",\n            \"network\": \"111.93.43.216/30\"\n        },\n        \"Eth-Trunk1.123\": {\n            \"description\": \"EXT_ILL_SARALA-HANDICRAFTS_PANIPAT_5018027739\",\n            \"qos-profile\": \"n/a\",\n            \"vlan-type\": \" dot1q 123\",\n            \"address\": \"182.156.211.161\",\n            \"netmask\": \"255.255.255.252\",\n            \"network\": \"182.156.211.160/30\"\n        },\n        \"Eth-Trunk1.128\": {\n            \"description\": \"EXT_LIVEDIGITAL MARKETING SOLUTION PRIVATE LIMITED_12005725741\",\n            \"qos-profile\": \" 4Mb outbound identifier none\",\n            \"vlan-type\": \" dot1q 128\",\n            \"address\": \"111.93.127.81\",\n            \"netmask\": \"255.255.255.248\",\n            \"network\": \"111.93.127.80/29\"\n        },\n        \"Eth-Trunk1.130\": {\n            \"description\": \"EXT_MISUMI INDIA PVT LTD_12405738282\",\n            \"qos-profile\": \" 30Mb outbound identifier none\",\n            \"vlan-type\": \" dot1q 130\",\n            \"address\": \"111.93.33.201\",\n            \"netmask\": \"255.255.255.248\",\n            \"network\": \"111.93.33.200/29\"\n        },\n        \"Eth-Trunk1.155\": {\n            \"description\": \"EXT_IREO-12405068279\",\n            \"qos-profile\": \" Internet_8Mb outbound identifier none\",\n            \"vlan-type\": \" dot1q 155\",\n            \"address\": \"111.93.232.221\",\n            \"netmask\": \"255.255.255.252\",\n            \"network\": \"111.93.232.220/30\"\n        },\n        \"Eth-Trunk1.157\": {\n            \"description\": \"not set\",\n            \"qos-profile\": \"n/a\",\n            \"vlan-type\": \"n/a\"\n        },\n        \"Eth-Trunk1.158\": {\n            \"description\": \"EXT_MATHWORKS INDIA PRIVATE LIMITED_1105725697\",\n            \"qos-profile\": \" 10Mb outbound identifier none\",\n            \"vlan-type\": \" dot1q 158\",\n            \"address\": \"111.93.206.33\",\n            \"netmask\": \"255.255.255.252\",\n            \"network\": \"111.93.206.32/30\"\n        },\n        \"Eth-Trunk1.168\": {\n            \"description\": \"not set\",\n            \"qos-profile\": \"n/a\",\n            \"vlan-type\": \"n/a\"\n        },\n        \"Eth-Trunk1.170\": {\n            \"description\": \"EXT_NATIONAL HIGHWAYS AND INFRASTRUCTURE DEVE CORP LTD_1105722482\",\n            \"qos-profile\": \"n/a\",\n            \"vlan-type\": \" dot1q 170\",\n            \"address\": \"111.93.193.141\",\n            \"netmask\": \"255.255.255.252\",\n            \"network\": \"111.93.193.140/30\"\n        },\n