python - 为什么我不能 pip install autopy？

Question

Collecting autopy
  Using cached autopy-4.0.0.tar.gz (20 kB)
  Preparing metadata (setup.py) ... done
Using legacy 'setup.py install' for autopy, since package 'wheel' is not installed.
Installing collected packages: autopy
    Running setup.py install for autopy ... error
    ERROR: Command errored out with exit status 1:
     command: 'c:\python39\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Nitro 5\\AppData\\Local\\Temp\\pip-install-a48eed40\\autopy_364831de627945c491e2f14d454eac9f\\setup.py'"'"'; __file__='"'"'C:\\Users\\Nitro 5\\AppData\\Local\\Temp\\pip-install-a48eed40\\autopy_364831de627945c491e2f14d454eac9f\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\Nitro 5\AppData\Local\Temp\pip-record-6f8m7fge\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\python39\Include\autopy'
         cwd: C:\Users\Nitro 5\AppData\Local\Temp\pip-install-a48eed40\autopy_364831de627945c491e2f14d454eac9f\
    Complete output (22 lines):
    running install
    c:\python39\lib\site-packages\setuptools\command\install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
      warnings.warn(
    running build
    running build_py
    creating build
    creating build\lib.win-amd64-3.9
    creating build\lib.win-amd64-3.9\autopy
    copying autopy\__init__.py -> build\lib.win-amd64-3.9\autopy
    running build_ext
    running build_rust
    error: can't find Rust compiler

    If you are using an outdated pip version, it is possible a prebuilt wheel is available for this package but pip is not able to install from it. Installing from the wheel would avoid the need for a Rust compiler.

    To update pip, run:

        pip install --upgrade pip

    and then retry package installation.

    If you did intend to build this package from source, try installing a Rust compiler from your system package manager and ensure it is on the PATH during installation. Alternatively, rustup (available at https://rustup.rs) is the recommended way to download and update the Rust compiler toolchain.
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\python39\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Nitro 5\\AppData\\Local\\Temp\\pip-install-a48eed40\\autopy_364831de627945c491e2f14d454eac9f\\setup.py'"'"'; __file__='"'"'C:\\Users\\Nitro 5\\AppData\\Local\\Temp\\pip-install-a48eed40\\autopy_364831de627945c491e2f14d454eac9f\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\Nitro 5\AppData\Local\Temp\pip-record-6f8m7fge\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\python39\Include\autopy' Check the logs for full command output.

Answer 1

有一个已知问题由于某种原因没有得到解决。

问题：https ://github.com/msanders/autopy/issues/75

它包含以下解决方法（在控制台中键入的命令）：

brew install libpng
CFLAGS="-Wno-return-type" pip install git+https://github.com/potpath/autopy.git

Answer 2

这个问题似乎在 Py3.9 上，但不在 Py3.8 上。我两个都试过了。

https://pypi.org/project/autopy/页面提供了有关如何安装 autopy 以防标准pip install autopy失败的信息。

根据该页面：

首先，通过运行以下命令查看您的机器是否可以使用二元轮：

$ pip install -U autopy

如果失败，安装 rustup [https://rustup.rs/] 然后运行：

$ rustup default nightly-2019-10-05
$ pip install -U setuptools-rust
$ pip install -U autopy

以上只是在 Py3.9 上为我做了诀窍。