why i can't install ez_setup

[水静流深]

I have downloaoded ez_setup.py ,when i install it ,the wrong message:

>python  d:\ez_setup.py
Downloading https://pypi.python.org/packages/source/s/setuptools/setuptools-5.2.
zip
Exception calling "DownloadFile" with "2" argument(s): "Unable to connect to th
e remote server"
At line:1 char:152
+ [System.Net.WebRequest]::DefaultWebProxy.Credentials = [System.Net.Credential
Cache]::DefaultCredentials; (new-object System.Net.WebClient).DownloadFile <<<<
 ('https://pypi.python.org/packages/source/s/setuptools/setuptools-5.2.zip', 'C
:\\Users\\pengsir\\setuptools-5.2.zip')
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException

Traceback (most recent call last):
  File "d:\ez_setup.py", line 332, in <module>
    sys.exit(main())
  File "d:\ez_setup.py", line 327, in main
    downloader_factory=options.downloader_factory,
  File "d:\ez_setup.py", line 287, in download_setuptools
    downloader(url, saveto)
  File "d:\ez_setup.py", line 192, in download_file_powershell
    _clean_check(cmd, target)
  File "d:\ez_setup.py", line 169, in _clean_check
    subprocess.check_call(cmd)
  File "d:\Python27\lib\subprocess.py", line 540, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['powershell', '-Command', "[System.Net.
WebRequest]::DefaultWebProxy.Credentials = [System.Net.CredentialCache]::Default
Credentials; (new-object System.Net.WebClient).DownloadFile('https://pypi.python
.org/packages/source/s/setuptools/setuptools-5.2.zip', 'C:\\\\Users\\\\pengsir\\
\\setuptools-5.2.zip')"]' returned non-zero exit status 1

what is wrong with it?
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