python api docs & examples for registrable Menu/Panel/Operator/PropertyGroup classes.

doc/python_api/examples/bpy.ops.py

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+"""
+Calling Operators
++++++++++++++++++
+
+Provides python access to calling operators, this includes operators written in
+C, Python or Macros.
+
+Only keyword arguments can be used to pass operator properties.
+
+Operators don't have return values as you might expect, instead they return a
+set() which is made up of: {'RUNNING_MODAL', 'CANCELLED', 'FINISHED',
+'PASS_THROUGH'}.
+Common return values are {'FINISHED'} and {'CANCELLED'}.
+
+
+Calling an operator in the wrong context will raise a RuntimeError,
+there is a poll() method to avoid this problem.
+
+Note that the operator ID (bl_idname) in this example is 'mesh.subdivide',
+'bpy.ops' is just the access path for python.
+"""
+import bpy
+
+# calling an operator
+bpy.ops.mesh.subdivide(number_cuts=3, smoothness=0.5)
+
+
+# check poll() to avoid exception.
+if bpy.ops.object.mode_set.poll():
+	bpy.ops.object.mode_set(mode='EDIT')