有人能帮我解释一下为什么我不能安装psutil吗？我在MacOS上。作为一个新手，请耐心一点，任何帮助都将不胜感激。这可能与我安装的默认Python版本和v3之间有关吗？我对命令行不太熟悉，所以不知道是什么导致了错误以及如何修复它...
我得到的错误信息如下...
kasey@MacBook-Pro ~ % pip3 install psutil
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. A future version of pip will drop support for Python 2.7. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
Defaulting to user installation because normal site-packages is not writeable
Collecting psutil
Downloading psutil-5.7.0.tar.gz (449 kB)
|████████████████████████████████| 449 kB 150 kB/s
Building wheels for collected packages: psutil
Building wheel for psutil (setup.py) ... error
ERROR: Command errored out with exit status 1:
command: /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-install-HsBPVK/psutil/setup.py'"'"'; __file__='"'"'/private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-install-HsBPVK/psutil/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-wheel-dsejsf
cwd: /private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-install-HsBPVK/psutil/
Complete output (43 lines):
running bdist_wheel
running build
running build_py
creating build
creating build/lib.macosx-10.15-x86_64-2.7
creating build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_pswindows.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_common.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/__init__.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_psosx.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_psbsd.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_psaix.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_pslinux.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_compat.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_psposix.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_pssunos.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
creating build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_contracts.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_connections.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/runner.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_unicode.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_misc.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_posix.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_linux.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_sunos.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/__init__.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_aix.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_process.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_bsd.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_system.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_osx.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_memory_leaks.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_windows.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/__main__.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
running build_ext
building 'psutil._psutil_osx' extension
creating build/temp.macosx-10.15-x86_64-2.7
creating build/temp.macosx-10.15-x86_64-2.7/psutil
creating build/temp.macosx-10.15-x86_64-2.7/psutil/arch
creating build/temp.macosx-10.15-x86_64-2.7/psutil/arch/osx
cc -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -iwithsysroot /usr/local/libressl/include -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -pipe -DPSUTIL_POSIX=1 -DPSUTIL_SIZEOF_PID_T=4 -DPSUTIL_VERSION=570 -DPSUTIL_OSX=1 -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c psutil/_psutil_common.c -o build/temp.macosx-10.15-x86_64-2.7/psutil/_psutil_common.o
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
error: command 'cc' failed with exit status 1
----------------------------------------
ERROR: Failed building wheel for psutil
Running setup.py clean for psutil
Failed to build psutil
Installing collected packages: psutil
Running setup.py install for psutil ... error
ERROR: Command errored out with exit status 1:
command: /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-install-HsBPVK/psutil/setup.py'"'"'; __file__='"'"'/private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-install-HsBPVK/psutil/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-record-O5uazE/install-record.txt --single-version-externally-managed --user --prefix= --compile --install-headers /Users/kasey/Library/Python/2.7/include/python2.7/psutil
cwd: /private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-install-HsBPVK/psutil/
Complete output (43 lines):
running install
running build
running build_py
creating build
creating build/lib.macosx-10.15-x86_64-2.7
creating build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_pswindows.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_common.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/__init__.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_psosx.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_psbsd.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_psaix.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_pslinux.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_compat.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_psposix.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
copying psutil/_pssunos.py -> build/lib.macosx-10.15-x86_64-2.7/psutil
creating build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_contracts.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_connections.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/runner.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_unicode.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_misc.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_posix.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_linux.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_sunos.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/__init__.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_aix.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_process.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_bsd.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_system.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_osx.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_memory_leaks.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/test_windows.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
copying psutil/tests/__main__.py -> build/lib.macosx-10.15-x86_64-2.7/psutil/tests
running build_ext
building 'psutil._psutil_osx' extension
creating build/temp.macosx-10.15-x86_64-2.7
creating build/temp.macosx-10.15-x86_64-2.7/psutil
creating build/temp.macosx-10.15-x86_64-2.7/psutil/arch
creating build/temp.macosx-10.15-x86_64-2.7/psutil/arch/osx
cc -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -iwithsysroot /usr/local/libressl/include -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -pipe -DPSUTIL_POSIX=1 -DPSUTIL_SIZEOF_PID_T=4 -DPSUTIL_VERSION=570 -DPSUTIL_OSX=1 -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c psutil/_psutil_common.c -o build/temp.macosx-10.15-x86_64-2.7/psutil/_psutil_common.o
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
error: command 'cc' failed with exit status 1
----------------------------------------
ERROR: Command errored out with exit status 1: /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-install-HsBPVK/psutil/setup.py'"'"'; __file__='"'"'/private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-install-HsBPVK/psutil/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/4h/g406694s1hb_rc1vwchcn08c0000gn/T/pip-record-O5uazE/install-record.txt --single-version-externally-managed --user --prefix= --compile --install-headers /Users/kasey/Library/Python/2.7/include/python2.7/psutil Check the logs for full command output.