无法安装python-dev

Ubuntu 14.04.3。 我无法安装python-dev：

yura@ubuntu:~$ sudo apt-get install python-dev Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: python-dev : Depends: libpython-dev (= 2.7.5-5ubuntu3) but it is not going to be installed Depends: python2.7-dev (>= 2.7.5-1~) but it is not going to be installed E: Unable to correct problems, you have held broken packages. 

也：

 yura@ubuntu:~$ sudo apt-get install libpython-dev [sudo] password for yura: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libpython-dev : Depends: libpython2.7-dev (>= 2.7.5-1~) but it is not going to be installed E: Unable to correct problems, you have held broken packages. yura@ubuntu:~$ sudo apt-get install libpython2.7-dev Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libpython2.7-dev : Depends: libpython2.7-stdlib (= 2.7.6-8) but 2.7.6-8ubuntu0.2 is to be installed Depends: libpython2.7 (= 2.7.6-8) but 2.7.6-8ubuntu0.2 is to be installed E: Unable to correct problems, you have held broken packages. yura@ubuntu:~$ sudo apt-get install libpython2.7-stdlib Reading package lists... Done Building dependency tree Reading state information... Done libpython2.7-stdlib is already the newest version. libpython2.7-stdlib set to manually installed. 0 upgraded, 0 newly installed, 0 to remove and 6 not upgraded. yura@ubuntu:~$ sudo apt-get install libpython2.7-dev Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libpython2.7-dev : Depends: libpython2.7-stdlib (= 2.7.6-8) but 2.7.6-8ubuntu0.2 is to be installed Depends: libpython2.7 (= 2.7.6-8) but 2.7.6-8ubuntu0.2 is to be installed 

我试过这个命令，他们没有帮助：

 sudo apt-get update sudo apt-get upgrade sudo apt-get autoremove auso apt-get install -f 

当我尝试执行apt-get update ，我会收到：

 yura@ubuntu:~$ sudo apt-get update Ign http://us.archive.ubuntu.com trusty InRelease Get:1 http://us.archive.ubuntu.com precise-updates InRelease [55,7 kB] Get:2 http://us.archive.ubuntu.com trusty Release.gpg [933 B] Get:3 http://us.archive.ubuntu.com precise-updates/main i386 Packages [1 045 kB] Ign http://dl.google.com stable InRelease Ign http://extras.ubuntu.com trusty InRelease Get:4 http://dl.google.com stable Release.gpg [181 B] Get:5 http://extras.ubuntu.com trusty Release.gpg [72 B] Get:6 http://dl.google.com stable Release [1 189 B] Get:7 http://extras.ubuntu.com trusty Release [11,9 kB] Get:8 http://dl.google.com stable/main amd64 Packages [1 363 B] Get:9 http://extras.ubuntu.com trusty/main Sources [14 B] Get:10 http://extras.ubuntu.com trusty/main i386 Packages [14 B] Ign http://dl.google.com stable/main Translation-en_US Ign http://dl.google.com stable/main Translation-en Ign http://extras.ubuntu.com trusty/main Translation-en_US Ign http://extras.ubuntu.com trusty/main Translation-en Get:11 http://us.archive.ubuntu.com precise-updates/restricted i386 Packages [16,1 kB] Get:12 http://us.archive.ubuntu.com precise-updates/main Translation-en [414 kB] Get:13 http://us.archive.ubuntu.com precise-updates/restricted Translation-en [3 869 B] Get:14 http://us.archive.ubuntu.com trusty Release [58,5 kB] Get:15 http://us.archive.ubuntu.com trusty/main Sources [1 064 kB] Get:16 http://us.archive.ubuntu.com trusty/restricted Sources [5 433 B] Get:17 http://us.archive.ubuntu.com trusty/universe Sources [6 399 kB] Get:18 http://us.archive.ubuntu.com trusty/multiverse Sources [174 kB] Get:19 http://us.archive.ubuntu.com trusty/main i386 Packages [1 348 kB] Get:20 http://us.archive.ubuntu.com trusty/restricted i386 Packages [13,4 kB] Get:21 http://us.archive.ubuntu.com trusty/universe i386 Packages [5 866 kB] Get:22 http://us.archive.ubuntu.com trusty/multiverse i386 Packages [134 kB] Get:23 http://us.archive.ubuntu.com trusty/main Translation-en [762 kB] Get:24 http://us.archive.ubuntu.com trusty/multiverse Translation-en [102 kB] Get:25 http://us.archive.ubuntu.com trusty/restricted Translation-en [3 457 B] Get:26 http://us.archive.ubuntu.com trusty/universe Translation-en [4 089 kB] Ign http://us.archive.ubuntu.com trusty/main Translation-en_US Ign http://us.archive.ubuntu.com trusty/multiverse Translation-en_US Ign http://us.archive.ubuntu.com trusty/restricted Translation-en_US Ign http://us.archive.ubuntu.com trusty/universe Translation-en_US Fetched 21,6 MB in 1min 7s (318 kB/s) Reading package lists... Done W: Duplicate sources.list entry http://us.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise-updates_main_binary-i386_Packages) W: Duplicate sources.list entry http://us.archive.ubuntu.com/ubuntu/ precise-updates/restricted i386 Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise-updates_restricted_binary-i386_Packages) W: Duplicate sources.list entry http://us.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise-updates_main_binary-i386_Packages) W: Duplicate sources.list entry http://us.archive.ubuntu.com/ubuntu/ precise-updates/restricted i386 Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise-updates_restricted_binary-i386_Packages) W: Duplicate sources.list entry http://us.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise-updates_main_binary-i386_Packages) W: Duplicate sources.list entry http://us.archive.ubuntu.com/ubuntu/ precise-updates/restricted i386 Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise-updates_restricted_binary-i386_Packages) W: You may want to run apt-get update to correct these problems 

我安装了常见的python2.7，但我也需要python-dev。

我也从相关问题尝试了这个（对我不起作用）：

 echo "deb http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted" | sudo tee -a /etc/apt/sources.list.d/precise-updates.list sudo apt-get update sudo apt-get install python2.7-dev 

以下是此命令的输出 ：

 apt-cache policy python2.7-dev apt-cache policy python2.7 apt-cache show python2.7 

Answer 1

我使用packages.ubuntu.com网站找到了desicion。

1. 编辑文件/etc/apt/sources.list （在文件管理器中双击或从终端使用sudo nano /etc/apt/sources.list ）。 将新记录添加到包列表中：

   deb http://cz.archive.ubuntu.com/ubuntu wily main

2. 关闭此文件（Ubuntu将自动更新您的包）。 如果不是，那就执行sudo apt-get update 。

3. 执行sudo apt-get install python-dev 。 它应该工作。 如果没有，那么从这里尝试另一个包链接。

Answer 2

这意味着你提到deb http://us.archive.ubuntu.com/ubuntu precise-updates main和deb http://us.archive.ubuntu.com/ubuntu precise-updates restricted两次某处。

1. 确保/etc/apt/sources.list没有提及精确更新 。 如果有复制它，删除它，并尝试另一个sudo apt-update && sudo apt-upgrade -y 。

2. 转到/etc/apt/sources.list.d 。 检查每个文件是否提及精确更新，并删除您找到的第一个文件的整行。 从这一点开始，您应该能够成功运行sudo apt-update && sudo apt-upgrade -y 。 如果你不能，那么这个目录中的某个地方还有另一个副本，你需要再次运行第2步。