Formally define traits in swagger parser

Author: kevin-bates

kernel_gateway/notebook_http/cell/parser.py

@@ -4,6 +4,7 @@
 
 import re
 import sys
+from traitlets import Unicode
 from traitlets.config.configurable import LoggingConfigurable
 
 def first_path_param_index(endpoint):
@@ -63,8 +64,8 @@ class APICellParser(LoggingConfigurable):
     api_response_indicator : str
         Regex pattern for API response metadata annotations
     """
-    api_indicator = r'{}\s+(GET|PUT|POST|DELETE)\s+(\/.*)+'
-    api_response_indicator = r'{}\s+ResponseInfo\s+(GET|PUT|POST|DELETE)\s+(\/.*)+'
+    api_indicator = Unicode(default_value=r'{}\s+(GET|PUT|POST|DELETE)\s+(\/.*)+')
+    api_response_indicator = Unicode(default_value=r'{}\s+ResponseInfo\s+(GET|PUT|POST|DELETE)\s+(\/.*)+')
 
     def __init__(self, comment_prefix, *args, **kwargs):
         super(APICellParser, self).__init__(*args, **kwargs)

kernel_gateway/notebook_http/swagger/parser.py

@@ -5,7 +5,7 @@
 import json
 import re
 from kernel_gateway.notebook_http.cell.parser import first_path_param_index, APICellParser
-from traitlets import default
+from traitlets import List, Unicode
 from traitlets.config.configurable import LoggingConfigurable
 
 def _swaggerlet_from_markdown(cell_source):
@@ -62,9 +62,9 @@ class SwaggerCellParser(LoggingConfigurable):
     operation_response_indicator : str
         Regex pattern for API response metadata annotations
     """
-    operation_indicator = r'{}\s*operationId:\s*(.*)'
-    operation_response_indicator = r'{}\s*ResponseInfo\s+operationId:\s*(.*)'
-    notebook_cells = []
+    operation_indicator = Unicode(default_value=r'{}\s*operationId:\s*(.*)')
+    operation_response_indicator = Unicode(default_value=r'{}\s*ResponseInfo\s+operationId:\s*(.*)')
+    notebook_cells = List()
 
     def __init__(self, comment_prefix, *args, **kwargs):
         super(SwaggerCellParser, self).__init__(*args, **kwargs)