linux python 启动报错, 多版本冲突

前言

今天调annacond3 是, 可能是环境出了问题

[root@myecsid ~]# python
Fatal Python error: Py_Initialize: Unable to get the locale encoding
  File "/usr/lib64/python2.7/encodings/__init__.py", line 123
    raise CodecRegistryError,\
                            ^
SyntaxError: invalid syntax

Current thread 0x00007f2054b04740 (most recent call first):
Aborted

尝试

重新配了下环境变量 path 清回默认, 为 Anaconda3添加

try01

#echo 'export PATH="/root/anaconda3/bin:$PATH"' >> ~/.bashrc
#source ~/.bashrc
[root@ ~]# unset PYTHONHOME
[root@ ~]# unset PYTHONPATH

python 依旧失败

[root@ ~]# python
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ModuleNotFoundError: No module named 'encodings'

Current thread 0x00007f62cb4f1740 (most recent call first):
Aborted

但conda 启动正常

[root@myecsid ~]# conda --version
conda 4.3.30
[root@myecsid ~]# conda env list
# conda environments:
#
python27                 /root/anaconda3/envs/python27
root                  *  /root/anaconda3
[root@myecsid ~]# source activate
(root) [root@myecsid ~]# python
Python 3.6.2 |Anaconda custom (64-bit)| (default, Jul 20 2017, 13:51:32)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>

既然 conda 能正常运行python , 那证明是可以的,
可能是某些环境变量变更没有生效, 导致多版本冲突
还是重启下服务器

[root@myecsid ~]# $PATH
-bash: /root/anaconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin: No such file or directory
[root@myecsid ~]# python
Python 3.6.2 |Anaconda custom (64-bit)| (default, Jul 20 2017, 13:51:32)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> quit()

果然如此 解决