windows下安装pythone并连接到本机的postgres数据库进行查询

注意：python的下载请见：https://www.python.org/downloads/release/python-372/

Microsoft Windows [版本 10.0.17134.590]
(c) 2018 Microsoft Corporation。保留所有权利。

C:\WINDOWS\system32>cd C:\Program Files\Python37\Scripts

C:\Program Files\Python37\Scripts>easy_install-3.7.exe
error: No urls, filenames, or requirements specified (see --help)

C:\Program Files\Python37\Scripts>easy_install-3.7.exe pip
Searching for pip
Best match: pip 18.1
Adding pip 18.1 to easy-install.pth file
Installing pip-script.py script to c:\program files\python37\Scripts
Installing pip.exe script to c:\program files\python37\Scripts
Installing pip3-script.py script to c:\program files\python37\Scripts
Installing pip3.exe script to c:\program files\python37\Scripts
Installing pip3.7-script.py script to c:\program files\python37\Scripts
Installing pip3.7.exe script to c:\program files\python37\Scripts

Using c:\program files\python37\lib\site-packages
Processing dependencies for pip
Finished processing dependencies for pip

C:\Program Files\Python37\Scripts>cd ..

C:\Program Files\Python37>python -m pip install --upgrade pip
Collecting pip
  Using cached https://files.pythonhosted.org/packages/d8/f3/413bab4ff08e1fc4828dfc59996d721917df8e8583ea85385d51125dceff/pip-19.0.3-py2.py3-none-any.whl
Installing collected packages: pip
  Found existing installation: pip 18.1
    Uninstalling pip-18.1:
      Successfully uninstalled pip-18.1
Successfully installed pip-19.0.3

C:\Program Files\Python37>

Microsoft Windows [版本 10.0.17134.590]
(c) 2018 Microsoft Corporation。保留所有权利。

C:\WINDOWS\system32>cd C:\Program Files\Python37\Scripts

C:\Program Files\Python37\Scripts>easy_install-3.7.exe
error: No urls, filenames, or requirements specified (see --help)

C:\Program Files\Python37\Scripts>easy_install-3.7.exe pip
Searching for pip
Best match: pip 18.1
Adding pip 18.1 to easy-install.pth file
Installing pip-script.py script to c:\program files\python37\Scripts
Installing pip.exe script to c:\program files\python37\Scripts
Installing pip3-script.py script to c:\program files\python37\Scripts
Installing pip3.exe script to c:\program files\python37\Scripts
Installing pip3.7-script.py script to c:\program files\python37\Scripts
Installing pip3.7.exe script to c:\program files\python37\Scripts

Using c:\program files\python37\lib\site-packages
Processing dependencies for pip
Finished processing dependencies for pip

C:\Program Files\Python37\Scripts>cd ..

C:\Program Files\Python37>python -m pip install --upgrade pip
Collecting pip
  Using cached https://files.pythonhosted.org/packages/d8/f3/413bab4ff08e1fc4828dfc59996d721917df8e8583ea85385d51125dceff/pip-19.0.3-py2.py3-none-any.whl
Installing collected packages: pip
  Found existing installation: pip 18.1
    Uninstalling pip-18.1:
      Successfully uninstalled pip-18.1
Successfully installed pip-19.0.3

C:\Program Files\Python37>pip

Usage:
  pip <command> [options]

Commands:
  install                     Install packages.
  download                    Download packages.
  uninstall                   Uninstall packages.
  freeze                      Output installed packages in requirements format.
  list                        List installed packages.
  show                        Show information about installed packages.
  check                       Verify installed packages have compatible dependencies.
  config                      Manage local and global configuration.
  search                      Search PyPI for packages.
  wheel                       Build wheels from your requirements.
  hash                        Compute hashes of package archives.
  completion                  A helper command used for command completion.
  help                        Show help for commands.

General Options:
  -h, --help                  Show help.
  --isolated                  Run pip in an isolated mode, ignoring environment variables and user configuration.
  -v, --verbose               Give more output. Option is additive, and can be used up to 3 times.
  -V, --version               Show version and exit.
  -q, --quiet                 Give less output. Option is additive, and can be used up to 3 times (corresponding to
                              WARNING, ERROR, and CRITICAL logging levels).
  --log <path>                Path to a verbose appending log.
  --proxy <proxy>             Specify a proxy in the form [user:passwd@]proxy.server:port.
  --retries <retries>         Maximum number of retries each connection should attempt (default 5 times).
  --timeout <sec>             Set the socket timeout (default 15 seconds).
  --exists-action <action>    Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup,
                              (a)bort).
  --trusted-host <hostname>   Mark this host as trusted, even though it does not have valid or any HTTPS.
  --cert <path>               Path to alternate CA bundle.
  --client-cert <path>        Path to SSL client certificate, a single file containing the private key and the
                              certificate in PEM format.
  --cache-dir <dir>           Store the cache data in <dir>.
  --no-cache-dir              Disable the cache.
  --disable-pip-version-check
                              Don't periodically check PyPI to determine whether a new version of pip is available for
                              download. Implied with --no-index.
  --no-color                  Suppress colored output