gistfile1.py

#eureka_connect.conf
{
  "eureka_connect": {
    "url": "http://33.33.33.20:8080/eureka/v2/apps/EUREKA-VAGRANT-001",
    "get_header": "'Accept': 'application/json'",
    "post_header": "'Content-Type': 'application/json'",
    "timeout": 3
  }
}

# rasher_config.py
import json

class RasherConfigParse(object):

  def __init__(self, conf_file):
    self.conf = json.load(open(conf_file))

  def get_key(self, *key):
    key_list = []
    count = 0
    while(count < len(key)):
      new_key = "['%s']" % key[count]
      key_list.append(new_key)
      count = count + 1

    target_value = "self.conf" + ''.join(key_list)
    return eval(target_value)

#sample_use.py
#!/usr/bin/python
from rasher_config import RasherConfigParse

test = RasherConfigParse('eureka_connect.conf')
print test.get_key('eureka_connect', 'post_header')