PyQt5安装与报错解决_pip安装pyqt5-tools报错

PyQt5安装

pip install PyQt5
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pip install PyQt5-tools
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报错

常见的报错为安装PyQt5-tools时报错如下

Installing collected packages: PyQt5
Successfully installed PyQt5-5.15.10
(PyQt-py39) PS C:\Users\liushurui> pip install PyQt5-tools
Collecting PyQt5-tools
  Using cached pyqt5_tools-5.15.9.3.3-py3-none-any.whl.metadata (8.3 kB)
Collecting click (from PyQt5-tools)
  Using cached click-8.1.7-py3-none-any.whl.metadata (3.0 kB)
Collecting pyqt5==5.15.9 (from PyQt5-tools)
  Using cached PyQt5-5.15.9-cp37-abi3-win_amd64.whl.metadata (2.2 kB)
INFO: pip is looking at multiple versions of pyqt5-tools to determine which version is compatible with other requirements. This could take a while.
Collecting PyQt5-tools
  Using cached pyqt5_tools-5.15.4.3.2-py3-none-any.whl.metadata (8.3 kB)
Collecting pyqt5==5.15.4 (from PyQt5-tools)
  Using cached PyQt5-5.15.4.tar.gz (3.3 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... error
  error: subprocess-exited-with-error

  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [26 lines of output]
      pyproject.toml: line 7: using '[tool.sip.metadata]' to specify the project metadata is deprecated and will be removed in SIP v7.0.0, use '[project]' instead
      Traceback (most recent call last):
        File "C:\Users\liushurui\.conda\envs\PyQt-py39\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 353, in <module>
          main()
        File "C:\Users\liushurui\.conda\envs\PyQt-py39\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "C:\Users\liushurui\.conda\envs\PyQt-py39\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 152, in prepare_metadata_for_build_wheel
          whl_basename = backend.build_wheel(metadata_directory, config_settings)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "C:\Users\liushurui\AppData\Local\Temp\pip-build-env-txffwgjw\overlay\Lib\site-packages\sipbuild\api.py", line 46, in build_wheel
          project = AbstractProject.bootstrap('wheel',
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "C:\Users\liushurui\AppData\Local\Temp\pip-build-env-txffwgjw\overlay\Lib\site-packages\sipbuild\abstract_project.py", line 92, in bootstrap
          project.setup(pyproject, tool, tool_description)
        File "C:\Users\liushurui\AppData\Local\Temp\pip-build-env-txffwgjw\overlay\Lib\site-packages\sipbuild\project.py", line 587, in setup
          self.apply_user_defaults(tool)
        File "C:\Users\liushurui\AppData\Local\Temp\pip-install-uzs7kduo\pyqt5_86a7a88f5c1f4913b4bc5d058164b41d\project.py", line 63, in apply_user_defaults
          super().apply_user_defaults(tool)
        File "C:\Users\liushurui\AppData\Local\Temp\pip-build-env-txffwgjw\overlay\Lib\site-packages\pyqtbuild\project.py", line 70, in apply_user_defaults
          super().apply_user_defaults(tool)
        File "C:\Users\liushurui\AppData\Local\Temp\pip-build-env-txffwgjw\overlay\Lib\site-packages\sipbuild\project.py", line 237, in apply_user_defaults
          self.builder.apply_user_defaults(tool)
        File "C:\Users\liushurui\AppData\Local\Temp\pip-build-env-txffwgjw\overlay\Lib\site-packages\pyqtbuild\builder.py", line 69, in apply_user_defaults
          raise PyProjectOptionException('qmake',
      sipbuild.pyproject.PyProjectOptionException
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.
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这是因为PyQt5-tools对python版本仅支持到3.9，可以通过以下命令查看python当前版本

python --version
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更改python版本方法为

conda install python=3.8
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