diff --git a/lib/matplotlib/projections/__init__.py b/lib/matplotlib/projections/__init__.py
index 16a5651da1d1..8ce118986065 100644
--- a/lib/matplotlib/projections/__init__.py
+++ b/lib/matplotlib/projections/__init__.py
@@ -55,7 +55,15 @@
from .. import axes, _docstring
from .geo import AitoffAxes, HammerAxes, LambertAxes, MollweideAxes
from .polar import PolarAxes
-from mpl_toolkits.mplot3d import Axes3D
+
+try:
+ from mpl_toolkits.mplot3d import Axes3D
+except ImportError:
+ import warnings
+ warnings.warn("Unable to import Axes3D. This may be due to multiple versions of "
+ "Matplotlib being installed (e.g. as a system package and as a pip "
+ "package). As a result, the 3D projection is not available.")
+ Axes3D = None
class ProjectionRegistry:
@@ -87,8 +95,12 @@ def get_projection_names(self):
HammerAxes,
LambertAxes,
MollweideAxes,
- Axes3D,
)
+if Axes3D is not None:
+ projection_registry.register(Axes3D)
+else:
+ # remove from namespace if not importable
+ del Axes3D
def register_projection(cls):
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