Update with ypy v0.6.0 (#145)

* Update with ypy v0.6.0

* Bump ypy-websocket >=0.8.3 in test dependencies

Author: davidbrochart

jupyter_ydoc/ynotebook.py

@@ -2,6 +2,7 @@
 # Distributed under the terms of the Modified BSD License.
 
 import copy
+import json
 from functools import partial
 from typing import Any, Callable, Dict, Optional
 from uuid import uuid4
@@ -87,8 +88,8 @@ def get_cell(self, index: int) -> Dict[str, Any]:
         :return: A cell.
         :rtype: Dict[str, Any]
         """
-        meta = self._ymeta.to_json()
-        cell = self._ycells[index].to_json()
+        meta = json.loads(self._ymeta.to_json())
+        cell = json.loads(self._ycells[index].to_json())
         cast_all(cell, float, int)  # cells coming from Yjs have e.g. execution_count as float
         if "id" in cell and meta["nbformat"] == 4 and meta["nbformat_minor"] <= 4:
             # strip cell IDs if we have notebook format 4.0-4.4
@@ -191,7 +192,7 @@ def get(self) -> Dict:
         :return: Document's content.
         :rtype: Dict
         """
-        meta = self._ymeta.to_json()
+        meta = json.loads(self._ymeta.to_json())
         cast_all(meta, float, int)  # notebook coming from Yjs has e.g. nbformat as float
         cells = []
         for i in range(len(self._ycells)):

pyproject.toml

@@ -13,7 +13,7 @@ requires-python = ">=3.7"
 keywords = ["jupyter", "ypy"]
 dependencies = [
     "importlib_metadata >=3.6; python_version<\"3.10\"",
-    "y-py >=0.5.3,<0.6.0",
+    "y-py >=0.6.0,<0.7.0",
 ]
 
 [[project.authors]]
@@ -31,7 +31,7 @@ test = [
     "pytest",
     "pytest-asyncio",
     "websockets >=10.0",
-    "ypy-websocket >=0.3.1,<0.4.0",
+    "ypy-websocket >=0.8.3,<0.9.0",
 ]
 docs = [
     "sphinx",