Mock tornado for jupyterlite

matplotlib · Oct 19, 2021 · e5b2cf9 · e5b2cf9
1 parent 76111ce
commit e5b2cf9
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/ipympl/backend_nbagg.py b/ipympl/backend_nbagg.py
@@ -1,5 +1,16 @@
 """Interactive figures in the Jupyter notebook"""
 
+import sys
+import types
+
+# In the case of a pyodide context (JupyterLite)
+# we mock Tornado, as it cannot be imported and would
+# lead to errors
+try:
+    import micropip  # noqa
+except ImportError:
+    sys.modules['tornado'] = types.ModuleType('tornadofake')
+
 import io
 import json
 from base64 import b64encode