升级后的 pip 现在只是在我尝试运行 sys.stderr.write(f"ERROR: {exc}") 时遇到此错误有人对这个有了解吗？

如何解决升级后的 pip 现在只是在我尝试运行 sys.stderr.write(f"ERROR: {exc}") 时遇到此错误有人对这个有了解吗？

你好，我试图从我的虚拟环境运行一个程序：

（Python Python 3.5.6 |Anaconda,Inc.|（默认，2018 年 8 月 26 日，16:05:27）[MSC v.1900 64 位 (AMD64)] 在 win32 上:)

我收到此警告：

@bot.event
async def on_ready():
    user = bot.get_user(427406422733619200)
    await user.send('Oh no.. I\'m alive..')

我决定通过运行来升级 pip：

Command "python setup.py egg_info" Failed with error code 1 in C:\Users\AVIJEE~1\AppData\Local\Temp\pip-build-14zuqg46\pandas\
You are using pip version 8.1.1,however version 21.0.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

这是我运行这个命令后得到的：

python -m pip install --upgrade pip

现在没有任何工作。当我尝试用 pip 做任何事情时，我得到以下信息：

Cache entry deserialization Failed,entry ignored
Collecting pip
  Downloading https://files.pythonhosted.org/packages/fe/ef/60d7ba03b5c442309ef42e7d69959f73aacccd0d86008362a681c4698e83/pip-21.0.1-py3-none-any.whl (1.5MB)
    100% |################################| 1.5MB 367kB/s
Installing collected packages: pip
  Found existing installation: pip 8.1.1
    Uninstalling pip-8.1.1:
      Successfully uninstalled pip-8.1.1
Exception:
Traceback (most recent call last):
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\shutil.py",line 387,in _rmtree_unsafe
    os.unlink(fullname)
FileNotFoundError: [WinError 3] The system cannot find the path specified: 'C:\\Users\\AVIJEE~1\\AppData\\Local\\Temp\\pip-7q4eavrd-uninstall\\users\\avijeetsingh\\appdata\\local\\cont
inuum\\anaconda3\\envs\\gcs-reports-py3\\lib\\site-packages\\pip\\_vendor\\requests\\packages\\urllib3\\packages\\ssl_match_hostname\\__pycache__\\_implementation.cpython-35.pyc'

During handling of the above exception,another exception occurred:

Traceback (most recent call last):
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\basecommand.py",line 209,in main
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\commands\install.py",line 317,in run
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\req\req_set.py",line 743,in install
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\req\req_install.py",line 759,in commit_uninstall
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\req\req_uninstall.py",line 142,in commit
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\_vendor\retrying.py",line 49,in wrapped_f
    return retrying(*dargs,**dkw).call(f,*args,**kw)
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\_vendor\retrying.py",line 212,in call
    raise attempt.get()
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\_vendor\retrying.py",line 247,in get
    six.reraise(self.value[0],self.value[1],self.value[2])
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\_vendor\six.py",line 686,in reraise
    def assertRegex(self,**kwargs):
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\_vendor\retrying.py",line 200,in call
    attempt = Attempt(fn(*args,**kwargs),attempt_number,False)
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\utils\__init__.py",line 102,in rmtree
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\shutil.py",line 494,in rmtree
    return _rmtree_unsafe(path,onerror)
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\shutil.py",line 384,in _rmtree_unsafe
    _rmtree_unsafe(fullname,line 389,in _rmtree_unsafe
    onerror(os.unlink,fullname,sys.exc_info())
  File "C:\Users\avijeetsingh\AppData\Local\Continuum\anaconda3\envs\gcs-reports-py3\lib\site-packages\pip\utils\__init__.py",line 110,in rmtree_errorhandler
FileNotFoundError: [WinError 3] The system cannot find the path specified: 'C:\\Users\\AVIJEE~1\\AppData\\Local\\Temp\\pip-7q4eavrd-uninstall\\users\\avijeetsingh\\appdata\\local\\cont
inuum\\anaconda3\\envs\\gcs-reports-py3\\lib\\site-packages\\pip\\_vendor\\requests\\packages\\urllib3\\packages\\ssl_match_hostname\\__pycache__\\_implementation.cpython-35.pyc'

请帮忙解决这个问题，因为我的 pip 现在坏了，没有任何效果。