sudo apt-get remove --purge mysql-server mysql-client mysql-common
我在尝试使用上述命令删除mysql时遇到以下错误：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'mysql-client' is not installed, so not removed
The following package was automatically installed and is no longer required:
php5-mysqlnd
Use 'apt-get autoremove' to remove it.
The following extra packages will be installed:
mysql-server-core-5.5 php5-mysqlnd python-aptdaemon
python-aptdaemon.gtk3widgets python3-aptdaemon python3-aptdaemon.gtk3widgets
python3-aptdaemon.pkcompat python3-uno python3-update-manager
ubuntu-drivers-common update-manager
The following packages will be REMOVED:
libdbd-mysql-perl* libmysqlclient18* mysql-client-5.5* mysql-common*
mysql-server* mysql-server-5.5* php5-mysql* phpmyadmin*
The following NEW …我将 @pytest.mark.parametrize 与各种测试用例和预期输出一起使用。它通过很少的测试用例完全正常，并在其他一些情况下出现此错误。甚至无法谷歌它。我想知道可能出了什么问题。如果有人能告诉我如何至少在谷歌上搜索此错误，我会很高兴！
============================== 测试会话开始 ================== ============ 平台 win32 -- Python 2.7.12, pytest-3.0.3, py-1.4.31, pluggy-0.4.0 -- c:\python27\python.exe
缓存目录：.cache
rootdir: C:\Python27, inifile:
收集 0 个项目 / 1 个错误
==================================== 错误 ============== ======================
___________________ 错误收集 test_mod_pppoe_disc.py ___________________
lib\site-packages\py_path\local.py:650: 在 pyimport 中
进口（模组名称）
lib\site-packages\pytest-3.0.3-py2.7.egg_pytest\assertion\rewrite.py:131: 在 find_module 中
source_stat, co = _rewrite_test(self.config, fn_pypath)
lib\site-packages\pytest-3.0.3-py2.7.egg_pytest\assertion\rewrite.py:322：在_rewrite_test
树 = ast.parse(source)
lib\ast.py:37: 在解析中
返回编译（源，文件名，模式，PyCF_ONLY_AST）
E ValueError: 无效 \x 转义
!!!!!!!!!!!!!!!!!!!!!!!! 中断：收集过程中出现 1 个错误 !!!!!!!!!!!!!!!!!!!!! ============================ 0.21 秒内出现 1 个错误 ================== ==========
@pytest.mark.parametrize("test_input1,test_input2,expected", [
(ARP(sha='D\x85\x00\xa2}\xad', spa='\n\xc4@=', tha='\x00\x00\x00\x00\x00\x00', tpa='\n\xc4@\x01'),"<socket._socketobject …