Error while excute python setup.py develop

I was running this codepython setup.py develop

while give me error `During handling of the above exception, another exception occurred:

Traceback (most recent call last): File “setup.py”, line 203, in <module> zip_safe=False) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/init.py”, line 165, in setup return distutils.core.setup(**attrs) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/core.py”, line 148, in setup dist.run_commands() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/dist.py”, line 966, in run_commands self.run_command(cmd) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/dist.py”, line 985, in run_command cmd_obj.run() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/develop.py”, line 38, in run self.install_for_development() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/develop.py”, line 155, in install_for_development self.process_distribution(None, self.dist, not self.no_deps) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/easy_install.py”, line 759, in process_distribution [requirement], self.local_index, self.easy_install File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/pkg_resources/init.py”, line 781, in resolve replace_conflicting=replace_conflicting File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/pkg_resources/init.py”, line 1064, in best_match return self.obtain(req, installer) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/pkg_resources/init.py”, line 1076, in obtain return installer(requirement) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/easy_install.py”, line 686, in easy_install return self.install_item(spec, dist.location, tmpdir, deps) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/easy_install.py”, line 712, in install_item dists = self.install_eggs(spec, download, tmpdir) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/easy_install.py”, line 897, in install_eggs return self.build_and_install(setup_script, setup_base) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/easy_install.py”, line 1167, in build_and_install self.run_setup(setup_script, setup_base, args) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/easy_install.py”, line 1151, in run_setup run_setup(setup_script, args) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/sandbox.py”, line 253, in run_setup raise File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/contextlib.py”, line 130, in exit self.gen.throw(type, value, traceback) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/sandbox.py”, line 195, in setup_context yield File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/contextlib.py”, line 130, in exit self.gen.throw(type, value, traceback) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/sandbox.py”, line 166, in save_modules saved_exc.resume() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/sandbox.py”, line 141, in resume six.reraise(type, exc, self._tb) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/_vendor/six.py”, line 685, in reraise raise value.with_traceback(tb) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/sandbox.py”, line 154, in save_modules yield saved File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/sandbox.py”, line 195, in setup_context yield File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/sandbox.py”, line 250, in run_setup _execfile(setup_script, ns) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/sandbox.py”, line 45, in _execfile exec(code, globals, locals) File “/tmp/easy_install-_zh_hd6k/mmcv-1.0.2/setup.py”, line 219, in <module> File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/init.py”, line 165, in setup return distutils.core.setup(**attrs) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/core.py”, line 148, in setup dist.run_commands() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/dist.py”, line 966, in run_commands self.run_command(cmd) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/dist.py”, line 985, in run_command cmd_obj.run() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/bdist_egg.py”, line 165, in run self.run_command(“egg_info”) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/cmd.py”, line 313, in run_command self.distribution.run_command(command) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/dist.py”, line 985, in run_command cmd_obj.run() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/egg_info.py”, line 297, in run self.find_sources() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/egg_info.py”, line 304, in find_sources mm.run() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/egg_info.py”, line 535, in run self.add_defaults() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/egg_info.py”, line 571, in add_defaults sdist.add_defaults(self) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/command/sdist.py”, line 228, in add_defaults self._add_defaults_ext() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/command/sdist.py”, line 311, in _add_defaults_ext build_ext = self.get_finalized_command(‘build_ext’) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/cmd.py”, line 299, in get_finalized_command cmd_obj.ensure_finalized() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/cmd.py”, line 107, in ensure_finalized self.finalize_options() File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/site-packages/setuptools/command/build_ext.py”, line 144, in finalize_options self.check_extensions_list(self.extensions) File “/home/user/anaconda3/envs/open-mmlab/lib/python3.7/distutils/command/build_ext.py”, line 363, in check_extensions_list "each element of ‘ext_modules’ option must be an " setuptools.sandbox.UnpickleableException: DistutilsSetupError(“each element of ‘ext_modules’ option must be an Extension instance or 2-tuple”)`

what should i do to fix it? i am using cuda10.0, pytorch and torchvision as demanded.

[erinchen824]

I solved this by pip install mmcv previously

Thanks, it worked, and for avoiding further errors i run pip install mmcv==0.4.0

[LouisChen0104]

I solved this by pip install mmcv previously