Detailed explanation of the different usage of PIP and PIP3

python It is divided python2 and python3 Two versions of , Again pip It's also a point pip and pip3 Of .

There are multiple versions of the computer at the same time python when ,pip3 It can be used for automatic identification python3 To install Libraries , To avoid the same python2 conflict

If your computer only has python3, Use pip perhaps pip3 It's the same

The main differences are as follows ：

• pip yes python Package management tools ,pip and pip3 Different versions , All in Scripts\ Under the table of contents
• If in the system Install only 了 Python2, Then you can only use pip
• If only Installed Python3, So you can use pip You can also use pip3, The two are equivalent
• If in the system At the same time to install 了 Python2 and Python3, be pip By default Python2 use ,pip3 Assign to Python3 use
• stay A virtual environment in , If there is only one python edition , It can be considered that in the system in use pip and pip3 The commands are the same

Installation and use differences ：

pip install xxxxxx
The newly installed library will be placed under this directory ：python2.x/site-packages

see python in pip Where the installation package is located ：

• Use pip list View installed package names
• And then use pip show Package name , You can see where it is installed

Be careful ： Usually installed in python Install under directory lib/site-packages Under the table of contents ！

pip show  Package name 

  Be careful ： If you use python  Execution procedure , Then we can't  import python3.x/site-packages  Library in .

pip3 install xxxxxx
The newly installed library will be placed under this directory ：python3.x/site-packages

see python3 in pip3 Where the installation package is located ：

• Use pip3 list View installed package names
• And then use pip3 show Package name , You can see where it is installed

Be careful ： Usually installed in python Install under directory lib/site-packages Under the table of contents ！

  Be careful ： If you use python3 Execution procedure , Then we can't  import python2.x/site-packages  Library in .