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安装tensorflow之前需要先安装python—dev， 这个不能用pip install来安装，只能用sudo apt-get install来安装。安装后会发现还要

先装另外两个东西，但是装这两个东西也还要继续装其他东西，相当麻烦且并没有成功

~$sudoapt-getinstallpython-devReadingpackagelists...DoneBuildingdependencytreeReadingstateinformation...DoneSomepackagescouldnotbeinstalled.ThismaymeanthatyouhaverequestedanimpossiblesituationorifyouareusingtheunstabledistributionthatsomerequiredpackageshavenotyetbeencreatedorbeenmovedoutofIncoming.Thefollowinginformationmayhelptoresolvethesituation:Thefollowingpackageshaveunmetdependencies:python-dev:Depends:libpython-dev(=2.7.11-1)butitisnotgoingtobeinstalledDepends:python2.7-dev(>=2.7.11-1~)butitisnotgoingtobeinstalledE:Unabletocorrectproblems,youhaveheldbrokenpackages.

用aptitude 工具可以搞定

先：sudoapt-getinstall aptitude

然后：

sudo aptitude install python-dev，之后会出现：

sudoaptitudeinstallpython-devThefollowingNEWpackageswillbeinstalled:libexpat1-dev{ab}libpython-dev{a}libpython2.7-dev{ab}python-devpython2.7-dev{ab}packagesupgraded,5newlyinstalled,0toremoveand1notupgraded.Needtoget28.1MBofarchives.Afterunpacking42.1MBwillbeused.Thefollowingpackageshaveunmetdependencies:python2.7-dev:Depends:python2.7(=2.7.11-2)but2.7.12-1ubuntu0~16.04.1isinstalled.Depends:libpython2.7(=2.7.11-2)but2.7.12-1ubuntu0~16.04.1isinstalled.libexpat1-dev:Depends:libexpat1(=2.1.0-7)but2.1.0-7ubuntu0.16.04.2isinstalled.libpython2.7-dev:Depends:libpython2.7-stdlib(=2.7.11-2)but2.7.12-1ubuntu0~16.04.1isinstalled.Depends:libpython2.7(=2.7.11-2)but2.7.12-1ubuntu0~16.04.1isinstalled.open:24;closed:106;defer:16;conflict:21.Thefollowingactionswillresolvethesedependencies:Keepthefollowingpackagesattheircurrentversion:1)libexpat1-dev[NotInstalled]2)libpython-dev[NotInstalled]3)libpython2.7-dev[NotInstalled]4)python-dev[NotInstalled]5)python2.7-dev[NotInstalled]Acceptthissolution?[Y/n/q/?]n这里一定要n，因为给的solution是保持现在的状态，即不安装Thefollowingactionswillresolvethesedependencies:Downgradethefollowingpackages:1)libexpat1[2.1.0-7ubuntu0.16.04.2(now)->2.1.0-7(xenial)]2)libpython2.7[2.7.12-1ubuntu0~16.04.1(now)->2.7.11-2(xenial)]3)libpython2.7-minimal[2.7.12-1ubuntu0~16.04.1(now)->2.7.11-2(xenial)]4)libpython2.7-stdlib[2.7.12-1ubuntu0~16.04.1(now)->2.7.11-2(xenial)]5)python2.7[2.7.12-1ubuntu0~16.04.1(now)->2.7.11-2(xenial)]6)python2.7-minimal[2.7.12-1ubuntu0~16.04.1(now)->2.7.11-2(xenial)]Acceptthissolution?[Y/n/q/?]y接受新状态就可以安装了

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