Centos7+python+virtualenv+virtualenvwrapper Environment Installation

First, Python upgrade to the latest version (2.7.10)

1. Check the Python environment

[Root@vice ~]# python

Python 2.7.5 (default, June 17 2014, 18:11:42)

[GCC 4.8.2 20140120 (Red Hat 4.8.2-16)] on linux2

Type "Help", "copyright", "credits" or "license" for more information.

>>>

2, upgrade Python to the latest version 2.7.10

Download python-2.7.10.tgz to TMP directory

TAR-ZXVF python-2.7.10.tgz

CD Python-2.7.10

./configure--prefix=/usr/local/python2.7
Make
Make install

After installation, run the Python to see if it's normal.

[Root@vice bin]#/usr/local/python2.7.10/bin/python2.7-v

Python 2.7.10

Next you need to create a link to make the system default Python into python2.7.10.
Ln-fs/usr/local/python2.7.10/bin/python2.7/usr/bin/python
Run Python view version

[Root@vice bin]# Python-v

Python 2.7.10

3. After making changes, Yum will not be able to run. Modify the/usr/bin/yum file

Vim/usr/bin/yum

The first line of the
The Python version in #!/usr/bin/python is replaced with the Python versions that I installed, as follows:
#!/usr/bin/python2.7

[Root@vice bin]# Yum

Loaded plugins: Fastestmirror

You need to give the command

Usage:yum [Options] COMMAND

Indicates that the Python update was successful

Second, install Setuptools, install PIP

Download ez_setup.py

Python ez_setup.py Install

After installation, run easy_install .

[Root@vice tmp]# Easy_install

Traceback (most recent):

File "/usr/bin/easy_install", line 5, <module>

From pkg_resources import Load_entry_point

File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3074, in <module>

File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3060, in _call_aside

File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3087, in _initialize_master_working_set

File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 647, in _build_master

File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 660, in _build_from_requirements

File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 833, in resolve

Pkg_resources. Distributionnotfound:the ' setuptools==0.9.8 ' distribution was not found and are required by the application

The command is found to be error-run. Re-install Python distribution-0.6.49 (0.7.3 will error)

Download distribution link https://pypi.python.org/pypi/distribute/0.6.49

TAR-ZXVF distribute-0.6.49.tar.gz

CD distribute-0.6.49

Python setup.py Install

Install PIP after installation

Easy_install pip

Third, installation of virtualenv and Virtualenvwrapper

pip install-y virtualenv virtualenvwrapper

Tip pip to find the command

OK, let's do this ( because you need to configure the environment variable, or you can't find the PIP)

/usr/local/python2.7/bin/pip Install Virtualenv

/usr/local/python2.7/bin/pip Install virtualenvwrapper

IV. Configuring environment variables

Vim/etc/profile

At the end, add the following:

python_home=/usr/local/python2.7/bin/

Workon_home = $HOME /. Virtualenvs # where all the virtual environments are placed

Project_home = $HOME / Dev # put all the items in place

Export path= $PATH: $PYTHON _home: $WORKON _home: $PROJECT _home

Save exit

Source /usr/local/python2.7/bin / Virtualenvwrapper . SH

Create a virtual environment

Mkvirtualenv Demo1

• workonSwitch to Environment

• deactivateUnregister the current environment

• lsvirtualenvList all environments

• rmvirtualenvDelete an environment

• cpvirtualenvReplication environment

• cdsitepackagesCD to the directory of the current environment site-packages

• lssitepackagesList content in the current environment site-packages

• setvirtualenvprojectBinding existing projects and environments

• wipeenvClear all third-party packages in the environment

Appendix:

(Some developers need to use the package, appropriate download installation)

Yum-y install gcc gcc-c++ autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-deve L zlib zlib-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel Curl curl-devel e2fsprogs E2 Fsprogs-devel krb5 krb5-devel libidn libidn-devel OpenSSL openssl-devel openldap openldap-devel Nss_ldap Openldap-clients openldap-servers

Yum-y Install vim wget

】

Centos7+python+virtualenv+virtualenvwrapper Environment Installation