ros2 build_error ai_generated true

ImportError: 运行 colcon build --packages-select my_package 时找不到模块 'my_package'

ImportError: No module named 'my_package' when running colcon build --packages-select my_package

ID: ros2/colcon-build-python-import-error-no-module-named-package

其他格式: JSON · Markdown 中文 · English
85%修复率
84%置信度
1证据数
2023-03-20首次发现

版本兼容性

版本状态引入弃用备注
ROS2 Humble active — — —
ROS2 Iron active — — —
colcon-core 0.13.x active — — —
colcon-ros 0.5.x active — — —

根因分析

ROS2 工作空间中的 Python 包缺少 __init__.py 文件或包结构不正确，导致 colcon 在构建期间无法导入它。

English

The Python package in the ROS2 workspace is missing a __init__.py file or has an incorrect package structure, causing colcon to fail to import it during build.

generic

官方文档

https://docs.ros.org/en/humble/Tutorials/Beginner-Client-Libraries/Creating-Your-First-ROS2-Package.html

解决方案

  1. 在包的源目录中创建一个空的 __init__.py 文件：'touch src/my_package/my_package/__init__.py'
  2. 验证包结构：源目录应包含一个与包同名的子目录，其中包含 __init__.py 和其他模块。

无效尝试

常见但无效的做法:

  1. 60% 失败

    The import error is specific to the package; building all packages may mask the issue or fail elsewhere.

  2. 90% 失败

    The error is due to missing __init__.py, not build artifacts; deleting build won't fix it.

  3. 70% 失败

    While this may install the package, it bypasses colcon's build system and may cause inconsistencies in the workspace.