fix FileNotFoundError

pyvckit/document_loader.py

@@ -19,10 +19,14 @@ from pyld.jsonld import (JsonLdError, parse_link_header, LINK_HEADER_REL)
 
 
 def get_cache():
-    with open("cache_context.json") as f:
+    try:
-        doc_str = f.read()
+        with open("cache_context.json") as f:
-        if doc_str:
+            doc_str = f.read()
-            return json.loads(doc_str)
+            if doc_str:
+                return json.loads(doc_str)
+    except FileNotFoundError:
+        pass
+
     return {}
 
 

setup.py

@@ -9,7 +9,7 @@ test_requires = [
 
 setup(
     name="pyvckit",
-    version="0.0.4",
+    version="0.0.6",
     packages=['pyvckit'],
     install_requires=[
         "jsonref",