CentOS Custom Installation PIP3

Preface

In the previous article on the CentOS Cloud Server installation Python3 records how to customize the installation of Python3, in the back of the test PIP3 found a problem:

pip --version

Terminal printing:

pip 8.1.2 from /usr/lib/python2.7/site-packages (python 2.7)

As above: Pip version or Python2.7 version

Solve

Since the system and Python are not particularly familiar, the first thought is to ask the next Niang. Degrees Niang gave a few suggestions are all download pip then install. I'm not rushing to do it, but I'm going to read the official documents
There is such a statement:

It probably means:

1. See if the PIP is available in the system:

[[email protected] python3]# pip --versionpip 8.1.2 from /usr/lib/python2.7/site-packages (python 2.7)

2. See if the PIP exists in the installation package

[[email protected] python3]# python -m ensurepip --default-pipLooking in links: /tmp/tmpzzl1ppcaRequirement already satisfied: setuptools in ./lib/python3.7/site-packages (39.0.1)Requirement already satisfied: pip in ./lib/python3.7/site-packages (10.0.1)

3. As seen in step 2, PIP3 already exists in the Python3.7 installation file, but there is no corresponding soft chain

[[email protected] bin]# ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3[[email protected] bin]# pip3 --versionpip 10.0.1 from /usr/local/python3/lib/python3.7/site-packages/pip (python 3.7)

4. Think of your Mac's Pip or PIP3, so also modify the soft chain.

Last login: Sat Sep 29 23:13:21 on ttys002liuyonghudeMacBook-Pro:~ liuyonghu$ pip3 --versionpip 9.0.1 from /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (python 3.6)liuyonghudeMacBook-Pro:~ liuyonghu$ which python3/usr/local/bin/python3liuyonghudeMacBook-Pro:~ liuyonghu$ which pip3/usr/local/bin/pip3liuyonghudeMacBook-Pro:~ liuyonghu$ ln -s /Library/Frameworks/Python.framework/Versions/3.6/bin/pip3 /usr/local/bin/pipliuyonghudeMacBook-Pro:~ liuyonghu$ pip --versionpip 9.0.1 from /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (python 3.6)

5. In fact, the process of finding the PIP path in the middle is laborious, also recorded.

[[email protected] python3]# pip--versionpip 8.1.2 from/usr/lib/python2.7/site-packages (python 2.7) [email  protected] python3]# python-m ensurepip--default-piplooking in Links:/tmp/tmpzzl1ppcarequirement already Satisfied:setuptools in./lib/python3.7/site-packages (39.0.1) requirement already satisfied:pip in./lib/python3.7/ Site-packages (10.0.1) [[email protected] python3]# CD/USER/BIN-BASH:CD:/user/bin: No file or directory [[email   Protected] python3]# cd/usr/bin[[email protected] bin]# ls pip*pip pip2 pip2.7[[email protected] bin]# mv Pip Pip.bak[[email protected] bin]# CD./lib/python3.7/site-packages (10.0.1)-bash: unexpected symbol ' (' There is a syntax error near the [[email  Protected] bin]# CD usr/lib/python3.7/site-packages (10.0.1)-bash: unexpected symbol ' (' near syntax error [[email protected] bin]# CD Usr/lib/python3.7/site-packages-bash:cd:usr/lib/python3.7/site-packages: No file or directory [[email protected] bin]# MV Pip.bak pip[[email protected] bin]# ls pip*pip pip2 pip2.7[[eMail protected] bin]# CD usr/lib/python3.7-bash:cd:usr/lib/python3.7: No that file or directory [[email protected] bin]# CD Usr/local/python3-bash:cd:usr/local/python3: No file or directory [[email protected] bin]# CD/USR/LIB/PYTHON3.7-BASH:CD: /usr/lib/python3.7: No file or directory [[email protected] bin]# cd/usr/local[[email protected] local]# CD python3[[ email protected] python3]# ls pip*ls: Unable to access pip*: No file or directory [[email protected] python3]# Lsbin include Lib share [[email protected] python3]# CD lib[[email protected] lib]# CD lib-bash:cd:lib: No file or directory [[email  Protected] lib]# ls PIP*LS: Unable to access pip*: No that file or directory [[email protected] lib]# CD. [[email protected] python3]# CD bin[[email protected] bin]# ls pip*pip3 pip3.7[[email protected] bin]# Ln-s/usr/local/python3/bin/pip3/usr/bin/pip3[[email protected] bin]# pip3--versionpip 10.0.1 from/usr/local/ Python3/lib/python3.7/site-packages/pip (Python 3.7)

Summarize:

1.python3 is extracted, in the scheduled directory, after compiling the installation, generated Python, pip execution files.

2. The instructions in the system exist in the/usr/*/bin/folder of different systems, if necessary, you can set up a soft chain.

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CentOS Custom Installation PIP3