安装 pybind11 后“没有名为 pybind11 的模块”

Question

我已经在我的 Ubuntu 18.04.3 机器上安装了 pybind11 （几种不同的方式，包括 pip 和包管理器），但是当我尝试以推荐的方式指定包含文件时：

python3 -m pybind11 --includes

我收到此错误：

/usr/bin/python3: No module named pybind11.__main__; 'pybind11' is a package and cannot be directly executed

我发现这个错误的唯一地方是一个中文网页，它对解决问题没有帮助。如何让 pybind11 工作？

回答以下一些问题：

>>> import pybind11; print(pybind11.__file__)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'pybind11' has no attribute '__file__'

> python3 -m pip install pybind11
WARNING: The directory '/home/<username>/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Requirement already satisfied: pybind11 in /usr/local/lib/python3.6/dist-packages (2.5.0)

> sudo pip3 -V
pip 20.0.2 from /usr/local/lib/python3.6/dist-packages/pip (python 3.6)

> python3 -V
Python 3.6.8

Answer 1

pybind11 已经安装。在我运行以下命令之前，Fasttext 安装无法找到 pybind11：

pip install wheel setuptools pip --upgrade

Answer 2

尝试这个命令。

export PYTHONPATH=$PYTHONPATH:/home/xxx/pybind11