centos7 下用 gdb调试python代码

首先根据https://wiki.python.org/moin/DebuggingWithGdb上去操作

1. sudo yum -y install yum-utils

2. sudo debuginfo-install glibc

此时报错

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.nju.edu.cn
 * extras: mirrors.njupt.edu.cn
 * updates: mirrors.nju.edu.cn
Could not find debuginfo for main pkg: glibc-2.17-55.el7.x86_64
Could not find debuginfo pkg for dependency package nss-softokn-freebl-3.15.4-2.el7.x86_64
No debuginfo packages available to install

解决：
vim /etc/yum.repos.d/CentOS-Debuginfo.repo
有时候这个文件是不存在的，需要创建文件
但是有时候这个文件存在，就只需要改写enabled=0变成enabled=1
它的内容是：

# CentOS-Debug.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#

# All debug packages from all the various CentOS-5 releases
# are merged into a single repo, split by BaseArch
#
# Note: packages in the debuginfo repo are currently not signed
#

[debug]
name=CentOS-7 - Debuginfo
baseurl=http://debuginfo.centos.org/7/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Debug-7
enabled=1

当写这个文件时，最后发现我是直接复制网上的内容，他的系统是centos6，所有我修改了内容将6改成了7，问题才得以解决

然后再次执行
sudo debuginfo-install glibc,还是报错：

Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Debug-7


Invalid GPG Key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Debug-7: No key found in given key data

解决：
https://github.com/xcp-ng/xcp-ng-release/blob/master/src/common/etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Debug-7

vim /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Debug-7它的内容是：

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v2.0.22 (GNU/Linux)
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