src/sage/manifolds/manifold.py: Conditionalize imports with 'if TYPE_…

…CHECKING:'
sagemath · Mar 21, 2022 · 71138ff · 71138ff
1 parent 5a92de8
commit 71138ff
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/src/sage/manifolds/manifold.py b/src/sage/manifolds/manifold.py
@@ -333,10 +333,6 @@
 from sage.categories.fields import Fields
 from sage.categories.homset import Hom
 from sage.categories.manifolds import Manifolds
-from sage.manifolds.chart import Chart
-from sage.manifolds.differentiable.chart import RealDiffChart
-from sage.manifolds.differentiable.scalarfield import DiffScalarField
-from sage.manifolds.scalarfield import ScalarField
 from sage.manifolds.structure import (
     DifferentialStructure,
     RealDifferentialStructure,
@@ -352,9 +348,13 @@
 from sage.structure.global_options import GlobalOptions
 
 if TYPE_CHECKING:
+    from sage.manifolds.chart import Chart
     from sage.manifolds.continuous_map import ContinuousMap
+    from sage.manifolds.differentiable.chart import RealDiffChart
     from sage.manifolds.differentiable.diff_map import DiffMap
     from sage.manifolds.differentiable.manifold import DifferentiableManifold
+    from sage.manifolds.differentiable.scalarfield import DiffScalarField
+    from sage.manifolds.scalarfield import ScalarField
 
 
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