WSL Ubuntu执行buildozer android debug遇_ctypes模块缺失错误

问题分析 #

从错误栈可以看出，报错的是Buildozer构建过程中自行编译的hostpython3（路径：/home/sameer/paadas/app/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/hostpython3/desktop/hostpython3/），而非你系统安装的Python。之前重装系统Python的操作无法解决这个问题，因为问题出在Buildozer缓存的构建产物上。

解决方案 #

1. 清理Buildozer缓存 #

先彻底清除之前的构建残留，避免旧的有问题的hostpython被重复使用：

# 用buildozer自带的清理命令
buildozer android clean

# 或者手动删除整个.buildozer目录（更彻底）
rm -rf ~/paadas/app/.buildozer

2. 安装完整的Python编译依赖 #

确保Ubuntu环境具备编译Python所需的所有依赖（不止libffi-dev）：

sudo apt update
sudo apt install build-essential libssl-dev zlib1g-dev libbz2-dev \
libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
xz-utils tk-dev libffi-dev liblzma-dev python3-openssl git

3. 重新执行构建命令 #

依赖安装完成后，重新运行Buildozer构建，这次它会重新编译hostpython，且会正确包含_ctypes模块：

buildozer android debug

额外排查点 #

• 确保你的WSL版本是WSL2，WSL1在文件系统兼容性和编译支持上存在限制，可能导致构建异常。
• 建议使用Ubuntu 20.04或22.04版本，较旧的Ubuntu版本可能存在依赖版本不兼容的问题。

完整错误栈 #

Traceback (most recent call last):
File "/usr/lib/python3.8/runpy.py", line 193, in _run_module_as_main
return _run_code(code, main_globals, None,
File "/usr/lib/python3.8/runpy.py", line 86, in _run_code
exec(code, run_globals)
File "/home/sameer/paadas/app/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 1312, in
main()
File "/home/sameer/paadas/app/.buildozer/android/platform/python-for-android/pythonforandroid/entrypoints.py", line 18, in main
ToolchainCL()
File "/home/sameer/paadas/app/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 734, in __init__
getattr(self, command)(args)
File "/home/sameer/paadas/app/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 153, in wrapper_func
build_dist_from_args(ctx, dist, args)
File "/home/sameer/paadas/app/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 212, in build_dist_from_args
build_recipes(build_order, python_modules, ctx,
File "/home/sameer/paadas/app/.buildozer/android/platform/python-for-android/pythonforandroid/build.py", line 504, in build_recipes
recipe.build_arch(arch)
File "/home/sameer/paadas/app/.buildozer/android/platform/python-for-android/pythonforandroid/recipe.py", line 934, in build_arch
self.install_python_package(arch)
File "/home/sameer/paadas/app/.buildozer/android/platform/python-for-android/pythonforandroid/recipe.py", line 950, in install_python_package
shprint(hostpython, 'setup.py', 'install', '-O2',
File "/home/sameer/paadas/app/.buildozer/android/platform/python-for-android/pythonforandroid/logger.py", line 167, in shprint
for line in output:
File "/home/sameer/.local/lib/python3.8/site-packages/sh.py", line 915, in next
self.wait()
File "/home/sameer/.local/lib/python3.8/site-packages/sh.py", line 845, in wait
self.handle_command_exit_code(exit_code)
File "/home/sameer/.local/lib/python3.8/site-packages/sh.py", line 869, in handle_command_exit_code
raise exc
sh.ErrorReturnCode_1:
RAN: /home/sameer/paadas/app/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/hostpython3/desktop/hostpython3/native-build/python3 setup.py install -O2 --root=/home/sameer/paadas/app/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/python-installs/paadas/armeabi-v7a --install-lib=.
STDOUT:
Traceback (most recent call last):
File "/home/sameer/paadas/app/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/setuptools/armeabi-v7a__ndk_target_21/setuptools/setup.py", line 7, in
import setuptools
File "/home/sameer/paadas/app/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/setuptools/armeabi-v7a__ndk_target_21/setuptools/setuptools/__init__.py", line 18, in
from setuptools.dist import Distribution
File "/home/sameer/paadas/app/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/setuptools/armeabi-v7a__ndk_target_21/setuptools/setuptools/dist.py", line 32, in
from setuptools import windows_support
File "/home/sameer/paadas/app/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/setuptools/armeabi-v7a__ndk_target_21/setuptools/setuptools/windows_support.py", line 2, in
import ctypes
File "/home/sameer/paadas/app/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/hostpython3/desktop/hostpython3/Lib/ctypes/__init__.py", line 8, in
from _ctypes import Union, Structure, Array
ModuleNotFoundError: No module named '_ctypes'

内容的提问来源于stack exchange，提问作者Sameer Mahajan