bpy_extras submodule (bpy_extras.io_utils)#

bpy_extras.io_utils.orientation_helper(axis_forward='Y', axis_up='Z')#

A decorator for import/export classes, generating properties needed by the axis conversion system and IO helpers, with specified default values (axes).

bpy_extras.io_utils.axis_conversion(from_forward='Y', from_up='Z', to_forward='Y', to_up='Z')#

Each argument us an axis in [‘X’, ‘Y’, ‘Z’, ‘-X’, ‘-Y’, ‘-Z’] where the first 2 are a source and the second 2 are the target.

bpy_extras.io_utils.axis_conversion_ensure(operator, forward_attr, up_attr)#

Function to ensure an operator has valid axis conversion settings, intended to be used from bpy.types.Operator.check.

  • operator (bpy.types.Operator) – the operator to access axis attributes from.

  • forward_attr (string) – attribute storing the forward axis

  • up_attr (string) – attribute storing the up axis


True if the value was modified.

Return type:


bpy_extras.io_utils.create_derived_objects(depsgraph, objects)#

This function takes a sequence of objects, returning their instances.


A dictionary where each key is an object from objects, values are lists of (bpy.types.Object, mathutils.Matrix) tuples representing instances.

Return type:


bpy_extras.io_utils.path_reference(filepath, base_src, base_dst, mode='AUTO', copy_subdir='', copy_set=None, library=None)#

Return a filepath relative to a destination directory, for use with exporters.

  • filepath (string) – the file path to return, supporting blenders relative ‘//’ prefix.

  • base_src (string) – the directory the filepath is relative too (normally the blend file).

  • base_dst (string) – the directory the filepath will be referenced from (normally the export path).

  • mode (string) – the method used get the path in [‘AUTO’, ‘ABSOLUTE’, ‘RELATIVE’, ‘MATCH’, ‘STRIP’, ‘COPY’]

  • copy_subdir (string) – the subdirectory of base_dst to use when mode=’COPY’.

  • copy_set (set) – collect from/to pairs when mode=’COPY’, pass to path_reference_copy when exporting is done.

  • library (bpy.types.Library or None) – The library this path is relative to.


the new filepath.

Return type:


bpy_extras.io_utils.path_reference_copy(copy_set, report=<built-in function print>)#

Execute copying files of path_reference

  • copy_set (set) – set of (from, to) pairs to copy.

  • report (function) – function used for reporting warnings, takes a string argument.

bpy_extras.io_utils.unique_name(key, name, name_dict, name_max=-1, clean_func=None, sep='.')#

Helper function for storing unique names which may have special characters stripped and restricted to a maximum length.

  • key (any hashable object associated with the name.) – unique item this name belongs to, name_dict[key] will be reused when available. This can be the object, mesh, material, etc instance itself.

  • name (string) – The name used to create a unique value in name_dict.

  • name_dict (dict) – This is used to cache namespace to ensure no collisions occur, this should be an empty dict initially and only modified by this function.

  • clean_func (function) – Function to call on name before creating a unique value.

  • sep (string) – Separator to use when between the name and a number when a duplicate name is found.

class bpy_extras.io_utils.ExportHelper#
invoke(context, _event)#
class bpy_extras.io_utils.ImportHelper#
invoke(context, _event)#
invoke_popup(context, confirm_text='')#