linux下pip和pip3安装

1、pip

#执行wget命令提示 -bash: wget: command not found 

yum -y install wget

#安装pip

wget https://bootstrap.pypa.io/get-pip.py

python get-pip.py

#查看pip版本

pip  -V

如果出现错误

Traceback (most recent call last):
  File "/usr/bin/pip", line 7, in
    from pip._internal import main
ModuleNotFoundError: No module named 'pip._internal'

#因为这个错误导致 pip找不到

python -m ensurepip

python -m pip install --upgrade pip

pip  -V

2、pip3

安装python3的时候会自动安装pip3

python3安装方法：https://blog.csdn.net/qq_21153619/article/details/84635002

手动安装：

wget --no-check-certificate  https://pypi.python.org/packages/source/p/pip/pip-9.0.1.tar.gz#md5=3a73c4188f8dbad6a1e6f6d44d117eeb
 
tar -zxvf pip-9.0.1.tar.gz 
 
cd pip-9.0.1
 
python3 setup.py build
 
python3 setup.py install