ERROR: Command errored

前言

最近更换本地Python2.7到3.8时报错

错误如下：

ERROR: Command errored out with exit status 1:
     command: /Users/cunweizhao/Desktop/desktop_health_sdk/desktop_health_sdk/venv/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/m1/4646y4js01bb5r3md5hztvc80000gn/T/pip-install-OmybtI/websockets/setup.py'"'"'; __file__='"'"'/private/var/folders/m1/4646y4js01bb5r3md5hztvc80000gn/T/pip-install-OmybtI/websockets/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /private/var/folders/m1/4646y4js01bb5r3md5hztvc80000gn/T/pip-pip-egg-info-EVupK4
         cwd: /private/var/folders/m1/4646y4js01bb5r3md5hztvc80000gn/T/pip-install-OmybtI/websockets/
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/m1/4646y4js01bb5r3md5hztvc80000gn/T/pip-install-OmybtI/websockets/setup.py", line 24, in <module>
        raise Exception("websockets requires Python >= 3.4.")
    Exception: websockets requires Python >= 3.4.
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

解决办法

Exception: websockets requires Python >= 3.4.

通过上面的提示，我先查看安装的包版本是多少：

(venv) cunweizhao@bogon desktop_health_sdk % pip list
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 Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
Package                        Version
------------------------------ -----------
aliyun-python-sdk-core         2.13.30
aliyun-python-sdk-kms          2.14.0
altgraph                       0.17
bleak                          0.9.1
certifi                        2020.12.5
cffi                           1.14.5
chardet                        4.0.0
configparser                   4.0.2
contextlib2                    0.6.0.post1
crcmod                         1.7
cryptography                   3.2.1
enum34                         1.1.10
future                         0.18.2
idna                           2.10
importlib-metadata             2.1.1
ipaddress                      1.0.23
jmespath                       0.10.0
mne                            0.20.8
numpy                          1.16.6
oss2                           2.14.0
pathlib                        1.0.1
pathlib2                       2.3.5
pefile                         2019.4.18
pip                            20.3.4
pycparser                      2.20
pycryptodome                   3.10.1
pyEDFlib                       0.1.20
pyinstaller-hooks-contrib      2020.11
pyobjc-core                    5.3
pyobjc-framework-Cocoa         5.3
pyobjc-framework-CoreBluetooth 5.3
pyobjc-framework-libdispatch   5.3
pywin32-ctypes                 0.2.0
requests                       2.25.1
scandir                        1.10.0
scipy                          1.2.3
setuptools                     44.1.1
six                            1.15.0
typing                         3.10.0.0
typing-extensions              3.7.4.3
urllib3                        1.26.3
websocket-client               0.59.0
websocket-server               0.4
wheel                          0.36.2
wincertstore                   0.2
zipp                           1.2.0