centos7安装python 与卸载python
2020-12-07 10:21
标签:system invalid exce 编译 url host can zlib vim 下载Python安装包 编译时要提前装好gcc编译器和zlib zlib-devel 1、下载文件 2、解压 3、进入解压目录 4、编译安装包 5、添加环境变量 6、检查是否成功,执行下面代码 Python安装常见问题: (1)configure: error: no acceptable C compiler found in $PATH 解决:yum install -y gcc (2):zipimport.ZipImportError: can’t decompress data 解决:安装zlib zlib-devel 1、修改系统默认的Python路径,因为在终端中输入Python命令时默认是指向Python2.6.6 2、建立新的软连接,指向Python-3.6.0 3、因为yum是依赖python的,所以这里我们修改了默认的python,就要要修改yum,让其运行指向旧的版本: vi /usr/bin/yum 将第一行中的“#!/usr/bin/python” 修改为“#!/usr/bin/python-2.6.6”,保存即可 4、打开一个新的终端,通过python命令进入python环境,可以看到已经指向了我们新安装的python3.6.0: 5、Centos中Python升级为3.X时yum出现except OSError, e: ^ SyntaxError: invalid syntax问题 CentOS 7升级Python到3.6后,需要在/usr/bin/python创建了一个指向Python 3的软连接,然后将/usr/bin/yum的顶部的: !/usr/bin/python 改成了 !/usr/bin/python-2.7.5 后,运行yum,还是出现了以下错误: [root@master ~]# yum -y groupinstall “X Window System” File "/usr/libexec/urlgrabber-ext-down", line 28 except OSError, e: ^ SyntaxError: invalid syntax 解决方案: (1). vim /usr/libexec/urlgrabber-ext-down 将/usr/bin/python改为/usr/bin/python-2.7.5。 (2). vim /usr/bin/yum-config-manager 解决办法同上: #!/usr/bin/python换成 #!/usr/bin/python-2.7.5 通过安装日志可知Python3被安装在如下目录了 /usr/local/lib/python3.6 /usr/local/bin/2to3-3.6 to /usr/local/bin/pyvenv-3.6 /usr/local/bin/pydoc3.6 /usr/local/bin/idle3.6 centos7安装python 与卸载python 标签:system invalid exce 编译 url host can zlib vim 原文地址:https://www.cnblogs.com/chengkanghua/p/10990173.html安装python
cd /usr/local/src
wget https:
//www.python.org/ftp/python/3.6.0/Python-3.6.0.tgz
tar -zxvf Python-3.6.0.tgz
cd Python-3.6.0
./configure --prefix=/usr/local/python
make && make install
echo PATH=
‘/usr/local/python/bin/:$PATH‘
>> /etc/profile
source /etc/profile
python3.6
Python 3.6.0 (
default
, Jun 1 2017, 14:01:43)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)]
on
linux
Type
"help"
,
"copyright"
,
"credits"
or
"license"
for
more information.
>>> print(
‘hello word‘
)
hello word
mv /usr/bin/python /usr/bin/python-2.6.6
ln -s /usr/local/python/bin/python3.6 /usr/bin/python
[centos65_1@localhost:~]$ python
Python 3.6.0 (
default
, Jul 30 2016, 19:40:32)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.34)]
on
darwin
Type
"help"
,
"copyright"
,
"credits"
or
"license"
for
more information.
>>>
卸载python
编译安装Python3
# 下载
# wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tar.xz
wget http://mirrors.sohu.com/python/3.6.4/Python-3.6.4.tgz
# 解压
tar -xzvf Python-3.6.4.tgz
cd Python-3.6.4
# 编译安装
# ./configure --help查看编译参数
# 默认安装在‘/usr/local/bin‘,‘/usr/local/lib‘ etc
# 可以通过参数指定如:--prefix=/usr/local/python3
./configure
make
# 把安装日志保存下来
make install > install.log
卸载Python3
# 删除上述文件
rm -rf /usr/local/lib/python3.6
rm -rf /usr/local/bin/2to3-3.6 to
rm -rf /usr/local/bin/pyvenv-3.6
rm -rf /usr/local/bin/pydoc3.6
rm -rf /usr/local/bin/idle3.6
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