Updated python client.

* Rename `ResponseError` exception to `ApiException`
* Use `File.separatorChar` to build file path in
  PythonClientCodegen.java
* Rename `config.py` module to `configuration.py`
* Rename `swagger.py` module to `api_client.py`

modules/swagger-codegen/src/main/resources/python/__init__package.mustache

@@ -7,4 +7,4 @@ from __future__ import absolute_import
 {{#apiInfo}}{{#apis}}from .apis.{{classVarName}} import {{classname}}
 {{/apis}}{{/apiInfo}}
 # import ApiClient
-from .swagger import ApiClient
+from .api_client import ApiClient

modules/swagger-codegen/src/main/resources/python/api.mustache

@@ -29,7 +29,7 @@ from six import iteritems
 
 from ..util import remove_none
 
-from .. import config
+from ..api_client import ApiClient
 
 {{#operations}}
 class {{classname}}(object):

modules/swagger-codegen/src/main/resources/python/api_client.mustache

@@ -28,7 +28,7 @@ except ImportError:
   # for python2
   from urllib import quote
 
-from . import config
+from . import configuration
 
 class ApiClient(object):
   """
@@ -38,7 +38,7 @@ class ApiClient(object):
   :param header_name: a header to pass when making calls to the API
   :param header_value: a header value to pass when making calls to the API
   """
-  def __init__(self, host=config.host, header_name=None, header_value=None):
+  def __init__(self, host=configuration.host, header_name=None, header_value=None):
     self.default_headers = {}
     if header_name is not None:
       self.default_headers[header_name] = header_value
@@ -292,7 +292,7 @@ class ApiClient(object):
       return
     
     for auth in auth_settings:
-      auth_setting = config.auth_settings().get(auth)
+      auth_setting = configuration.auth_settings().get(auth)
       if auth_setting:
         if auth_setting['in'] == 'header':
           headers[auth_setting['key']] = auth_setting['value']

modules/swagger-codegen/src/main/resources/python/rest.mustache

@@ -120,7 +120,7 @@ class RESTClientObject(object):
         r = RESTResponse(r)
 
         if r.status not in range(200, 206):
-            raise ErrorResponse(r)
+            raise ApiException(r)
 
         return self.process_response(r)
 
@@ -157,7 +157,7 @@ class RESTClientObject(object):
         return self.request("PATCH", url, headers=headers, post_params=post_params, body=body)
 
 
-class ErrorResponse(Exception):
+class ApiException(Exception):
     """
     Non-2xx HTTP response
     """