Fix dates in DataFrame

Author: jakubno

template/requirements.txt

@@ -3,6 +3,11 @@ jupyter-server==2.13.0
 ipykernel==6.29.3
 ipython==8.22.2
 
+orjson==3.6.3
+pandas==1.5.3
+matplotlib==3.9.2
+pillow==9.5.0
+
 # Latest version for
 e2b_charts
 
@@ -14,12 +19,10 @@ gensim==4.3.2
 imageio==2.34.0
 joblib==1.3.2
 librosa==0.10.1
-matplotlib==3.9.2
 nltk==3.8.1
 numpy==1.26.4
 opencv-python==4.9.0.80
 openpyxl==3.1.2
-pandas==1.5.3
 plotly==5.19.0
 pytest==8.1.0
 python-docx==1.1.0

template/startup_scripts/0002_data.py

@@ -5,6 +5,7 @@
 from traitlets.traitlets import Unicode, ObjectName
 
 from e2b_charts import chart_figure_to_dict
+import orjson
 
 
 def _figure_repr_e2b_chart_(self: Figure):
@@ -19,7 +20,7 @@ def _figure_repr_e2b_chart_(self: Figure):
 
 
 def _dataframe_repr_e2b_data_(self: pandas.DataFrame):
-    return self.to_dict(orient="list")
+    return orjson.loads(orjson.dumps(self.to_dict(orient="list")))
 
 
 class E2BDataFormatter(BaseFormatter):