gdb can't used by the error ImportError: No module named site

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公司最近弄了几台Linux7.x的几台机器，但是环境没弄好，总是不是好使，尤其是gdb不好用，直接报一下这个错误：

[/usr1/arbor/camb_src/billing/bip] (165)yyang@mrdvrh60#gdb

ImportError: No module named site

在网上查了查资料，发现这个错误跟python有关，于是unset 了PYTHONHOME 这个env，gdb就可以work了。

[/usr1/arbor/camb_src/billing/bip] (167)yyang@mrdvrh60#unsetenv PYTHONHOME
[/usr1/arbor/camb_src/billing/bip] (168)yyang@mrdvrh60#gdb
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
(gdb) quit

https://askubuntu.com/questions/247984/gdb-cannot-run-due-to-python-error

GDB uses python for scripting, but appears to have problems if you have built your own version of python. It finds your new python executable, but then tries to load the system python configuration, causing a mismatch. This seems to be a problem that applies more widely to other applications that embed python.

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