Black -- formatter for python (#508)

* Add black

* use black to format code

* Black version

server/app/util/filter.py

@@ -7,7 +7,6 @@ from server.app.util.constants import Axis
 
 
 class QueryStringError(Exception):
-
     def __init__(self, key, message):
         self.key = key
         self.message = message

server/app/util/models.py

@@ -5,24 +5,13 @@ class AnnotationModel(Schema):
     type = "object"
     description = "Filter by annotation key: value"
     properties = {
-        "name": {
-            "type": "string"
-        },
+        "name": {"type": "string"},
         # TODO update to OpenAPI v3.0 when a library is available that supports it
         # Unfortunately 2.0 doesn't have a way to have a schema that accepts multiple types
         # Overloading the type key with a list seems to work ok and makes it to the page
-        "values": {
-            "type": "array",
-            "items": {
-                "type": ["float32", "string", "int32", "bool"]
-            }
-        },
-        "min": {
-            "type": ["int32", "float32"],
-        },
-        "max": {
-            "type": ["int32", "float32"],
-        }
+        "values": {"type": "array", "items": {"type": ["float32", "string", "int32", "bool"]}},
+        "min": {"type": ["int32", "float32"]},
+        "max": {"type": ["int32", "float32"]},
     }
     required = ["name"]
 
@@ -30,36 +19,16 @@ class AnnotationModel(Schema):
 class IndexModel(Schema):
     type = "object"
     description = "Filter by index of observation/variable ex. [0, 5, 15]"
-    properties = {
-        "index": {
-            "type": "array",
-            "items": {
-                "format": "int32",
-                "type": "integer"
-            }
-
-        }
-    }
+    properties = {"index": {"type": "array", "items": {"format": "int32", "type": "integer"}}}
 
 
 class AxisModel(Schema):
     type = "object"
     description = "Axis of data -- obs or var"
-    properties = {
-        "index": IndexModel,
-        "annotation_value": AnnotationModel.array()
-    }
+    properties = {"index": IndexModel, "annotation_value": AnnotationModel.array()}
 
 
 class FilterModel(Schema):
     type = "object"
     description = "Complex filter"
-    properties = {
-        "filter": {
-            "type": "object",
-            "properties": {
-                "obs": AxisModel,
-                "var": AxisModel
-            }
-        }
-    }
+    properties = {"filter": {"type": "object", "properties": {"obs": AxisModel, "var": AxisModel}}}

server/app/util/utils.py

@@ -15,7 +15,7 @@ class Float32JSONEncoder(json.JSONEncoder):
         if it runs into non-finite floating point values which are unsupported by
         standard JSON.
         """
-        kwargs['allow_nan'] = False
+        kwargs["allow_nan"] = False
         super().__init__(*args, **kwargs)
 
     def default(self, obj):
@@ -30,8 +30,9 @@ def custom_format_warning(msg, *args, **kwargs):
     return f"[cellxgene] Warning: {msg} \n"
 
 
-def get_mime_type(default="application/json", acceptable_types=["application/json", "text/csv"], query_param=None,
-                  header=None):
+def get_mime_type(
+    default="application/json", acceptable_types=["application/json", "text/csv"], query_param=None, header=None
+):
     mime_type = default
     if query_param:
         if query_param in acceptable_types: