C:\Windows\System32>pip --version
pip 18.1 from c:\dev\python36\lib\site-packages\pip (python 3.6)

C:\Windows\System32>python --version
Python 3.6.6

pip軟體的升級：
python -m pip install --upgrade pip

--pip命令：
C:\Windows\System32>pip  --help

Usage:
  pip <command> [options]


Commands:
 install                    安裝包.
 uninstall                  解除安裝包.
 freeze                     按著一定格式輸出已安裝包列表
 list                       列出已安裝包.
 show                       顯示包詳細資訊.
 search                     搜尋包，類似yum裡的search.
 wheel                      Buildwheelsfromyourrequirements.
 zip                        不推薦.Zipindividualpackages.
 unzip                      不推薦.Unzipindividualpackages.
 bundle                     不推薦.Createpybundles.
 help                       當前幫助.
 
GeneralOptions:
 -h,--help                 顯示幫助.
 -v,--verbose              更多的輸出，最多可以使用3次
 -V,--version              現實版本資訊然後退出.
 -q,--quiet                最少的輸出.
 --log-file<path>          覆蓋的方式記錄verbose錯誤日誌，預設檔案：/root/.pip/pip.log
 --log<path>               不覆蓋記錄verbose輸出的日誌.
 --proxy<proxy>            Specifyaproxyintheform[user:
 
[email protected]]proxy.server:port.
 --timeout<sec>            連線超時時間(預設15秒).
 --exists-action<action>   Defaultactionwhenapathalreadyexists:(s)witch,(i)gnore,(w)ipe,(b)ackup.
 --cert<path>              證書.
 


--軟體安裝位置查詢：
C:\Windows\System32>pip show --files redis
Name: redis
Version: 2.10.6

-- 查詢過期的軟體：
C:\Windows\System32>pip list --outdated
Package                Version     Latest     Type
---------------------- ----------- ---------- -----
alembic                0.8.10      1.0.5      sdist
beautifulsoup4         4.6.0       4.7.1      wheel
certifi                2017.7.27.1 2018.11.29 wheel
click                  6.7         7.0        wheel
PyMySQL                0.7.11      0.9.3      wheel
-- 軟體升級：
C:\Windows\System32>pip install --upgrade PyMySQL==0.9.3
Collecting PyMySQL==0.9.3
  Downloading https://files.pythonhosted.org/packages/ed/39/15045ae46f2a123019aa968dfcba0396c161c20f855f11dea6796bcaae95/PyMySQL-0.9.3-py2.py3-none-any.whl (47kB)
    100% |████████████████████████████████| 51kB 216kB/s
Installing collected packages: PyMySQL
  Found existing installation: PyMySQL 0.7.11
    Uninstalling PyMySQL-0.7.11:
      Successfully uninstalled PyMySQL-0.7.11
Successfully installed PyMySQL-0.9.3

--軟體的解除安裝：
C:\Windows\System32>pip install redis
Requirement already satisfied: redis in c:\dev\python36\lib\site-packages (2.10.6)

C:\Windows\System32>pip uninstall redis
Uninstalling redis-2.10.6:
  Would remove:
    c:\dev\python36\lib\site-packages\redis-2.10.6.dist-info\*
    c:\dev\python36\lib\site-packages\redis\*
Proceed (y/n)? y
  Successfully uninstalled redis-2.10.6