Python的开发环境安装和配置非常的简单,如果是Linux系统则会默认集成安装了Python环境,Python的可执行文件被放在了/usr/local/bin目录下,库函数被安装在了/usr/local/python目录中,接下来我们将使用源码的方式来编译安装一下Python解释器.
1.首先安装gcc编译器,和Python的相关依赖包.
[root@localhost ~]# yum -y install gcc zlib zlib-devel openssl openssl-devel libffi-devel
Package gcc-4.8.5-36.el7.x86_64 already installed and latest version
Package zlib-1.2.7-18.el7.x86_64 already installed and latest version
Package zlib-devel-1.2.7-18.el7.x86_64 already installed and latest version
Package 1:openssl-1.0.2k-16.el7.x86_64 already installed and latest version
Package 1:openssl-devel-1.0.2k-16.el7.x86_64 already installed and latest version
Package libffi-devel-3.0.13-18.el7.x86_64 already installed and latest version
Nothing to do
2.这里我们需要编译并安装Python解释器.
[root@localhost ~]# yum install -y readline
[root@localhost ~]# wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz
[root@localhost ~]# tar xvzf Python-3.7.0.tgz -C /usr/src/python3.7
[root@localhost ~]# cd /usr/src/Python-3.7.0/
[root@localhost ~]# ./configure --prefix=/usr/local/python3.7
[root@localhost ~]# make && make altinstall
3.将Python头文件拷贝到标准目录,避免直接使用Python找不到所需的头文件.
[root@localhost ~]# cd /usr/local/include/python3.7/
[root@localhost ~]# cp -a ./* /usr/local/include/
4.接着我们备份一下旧版本的Python,并创建符号链接链接到新版本的Python上面.
[root@localhost ~]# cd /usr/bin/
[root@localhost bin]# mv python python.old
[root@localhost bin]# ln -s /usr/local/bin/python3.7 /usr/local/bin/python
[root@localhost bin]# rm -rf /usr/bin/python
[root@localhost bin]# cp /usr/local/bin/python3.7 /usr/bin/python
5.由于yum是用Python开发的,这里为了避免冲突要改掉他的配置.
[root@localhost ~]# vim /usr/bin/yum
#!/usr/bin/python2.7 ←此处将python改成python2.7
[root@localhost ~]# vim /usr/libexec/urlgrabber-ext-down
#!/usr/bin/python2.7 ←此处将python改成python2.7
6.最后测试python新版本是否生效了.
[root@localhost ~]# python
Python 3.7.0 (default, Apr 17 2018, 11:03:21)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> exit()
编译成pyc文件: 将我们写好的一个.py文件编译成.pyc文件.
[root@localhost ~]# ls -lh
total 4.0K
-rw-r--r--. 1 root root 43 Jan 8 02:22 test.py
[root@localhost ~]# python -m test.py
[root@localhost ~]# ls -lh
total 8.0K
-rw-r--r--. 1 root root 43 Jan 8 02:22 test.py
-rw-r--r--. 1 root root 163 Jan 8 02:25 test.pyo
编译成pyo文件: 将我们写好的一个.py文件编译成.pyo文件.
[root@localhost ~]# ls -lh
total 4.0K
-rw-r--r--. 1 root root 43 Jan 8 02:22 test.py
[root@localhost ~]# python -O -m test.py
[root@localhost ~]# ls -lh
total 8.0K
-rw-r--r--. 1 root root 43 Jan 8 02:22 test.py
-rw-r--r--. 1 root root 163 Jan 8 02:25 test.pyo
打包Python程序： 通过pip安装打包工具pyinstaller.
[root@localhost ~]# yum install -y python-pip
Package python2-pip-8.1.2-6.el7.noarch already installed and latest version
Nothing to do
[root@localhost ~]# pip install pyinstaller
Collecting pyinstaller
Downloading https://files.pythonhosted.org/pyinstall
2.准备测试文件,执行以下命令加密生成可执行文件.
[root@localhost ~]# ls -lh
total 4.0K
-rw-r--r--. 1 root root 43 Jan 8 02:22 test.py
[root@localhost ~]# pyinstaller -F ./test.py
44 INFO: PyInstaller: 3.4
44 INFO: Python: 2.7.5
44 INFO: Platform: Linux-3.10.0-862.el7.x86_64-x86_64-with-centos-7.5.1804-Core
44 INFO: wrote /root/test.spec
152 INFO: UPX is not available.
155 INFO: Extending PYTHONPATH with paths
......
3.然后查看,在当前目录会看到生成个3个目录,其中dist目录中的内容,就是生成的可执行文件.
[root@localhost ~]# ls -lh
total 8.0K
drwxr-xr-x. 3 root root 18 Jan 8 02:29 build
drwxr-xr-x. 2 root root 18 Jan 8 02:29 dist
-rw-r--r--. 1 root root 43 Jan 8 02:22 test.py
-rw-r--r--. 1 root root 786 Jan 8 02:29 test.spec
[root@localhost dist]# ls -lh
total 4.7M
-rwxr-xr-x. 1 root root 4.6M Jan 8 02:29 test
[root@localhost dist]# ./test
hello world