python中pip命令的使用

python中pip命令主要用於安裝和下載包

安裝：pip install package_name

卸載：pip uninstall pakage_name

 

以numpy包為例進行測試。

1、查看python版本

C:\Users\75377>python --version
Python 3.8.2

 

2、測試直接加載numpy包

C:\Users\75377>python      ## 調用python
Python 3.8.2 (tags/v3.8.2:7b3ab59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy         ## 直接加載numpy，顯示沒有numpy模塊
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'numpy'

 

3、退出python，使用pip命令進行安裝

>>> quit()   ## 退出python

C:\Users\75377>pip install numpy -y  ## 直接安裝

Usage:
  pip install [options] <requirement specifier> [package-index-options] ...
  pip install [options] -r <requirements file> [package-index-options] ...
  pip install [options] [-e] <vcs project url> ...
  pip install [options] [-e] <local project path> ...
  pip install [options] <archive url/path> ...

no such option: -y      ## 不能使用 -y

C:\Users\75377>pip install numpy   ## 安裝 numpy
Collecting numpy
  Using cached numpy-1.21.4-cp38-cp38-win_amd64.whl (14.0 MB)
Installing collected packages: numpy
Successfully installed numpy-1.21.4 ## 安裝成功

C:\Users\75377>

 

4、測試效果

C:\Users\75377>python
Python 3.8.2 (tags/v3.8.2:7b3ab59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy   ## 沒有問題，可以調用
>>>

 

5、使用pip卸載 numpy

>>> quit()

C:\Users\75377>pip uninstall numpy ## 卸載numpy包
Found existing installation: numpy 1.21.4
Uninstalling numpy-1.21.4:
  Would remove:
    d:\programs\python\lib\site-packages\numpy-1.21.4.dist-info\*
    d:\programs\python\lib\site-packages\numpy\*
    d:\programs\python\scripts\f2py.exe
Proceed (Y/n)? y
  Successfully uninstalled numpy-1.21.4   ## 卸載成功

 

6、測試卸載效果

C:\Users\75377>python
Python 3.8.2 (tags/v3.8.2:7b3ab59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy   ## 卸載成功
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'numpy'