安裝tensorflow之前需要先安裝python—dev， 這個不能用pip install來安裝，只能用sudo apt-get install來安裝。安裝后會發現還要先裝另外兩個東西，但是裝這兩個東西也還要繼續裝其他東西，相當麻煩且並沒有成功
~$ 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 (= 2.7.11-1) but it is not going to be installed Depends: python2.7-dev (>= 2.7.11-1~) but it is not going to be installed E: Unable to correct problems, you have held broken packages.
用aptitude 工具可以搞定
先：sudo apt-get install aptitude
然后：
sudo aptitude install python-dev，之后會出現：
sudo aptitude install python-dev The following NEW packages will be installed: libexpat1-dev{ab} libpython-dev{a} libpython2.7-dev{ab} python-dev python2.7-dev{ab} 0 packages upgraded, 5 newly installed, 0 to remove and 1 not upgraded. Need to get 28.1 MB of archives. After unpacking 42.1 MB will be used. The following packages have unmet dependencies: python2.7-dev : Depends: python2.7 (= 2.7.11-2) but 2.7.12-1ubuntu0~16.04.1 is installed. Depends: libpython2.7 (= 2.7.11-2) but 2.7.12-1ubuntu0~16.04.1 is installed. libexpat1-dev : Depends: libexpat1 (= 2.1.0-7) but 2.1.0-7ubuntu0.16.04.2 is installed. libpython2.7-dev : Depends: libpython2.7-stdlib (= 2.7.11-2) but 2.7.12-1ubuntu0~16.04.1 is installed. Depends: libpython2.7 (= 2.7.11-2) but 2.7.12-1ubuntu0~16.04.1 is installed. open: 24; closed: 106; defer: 16; conflict: 21 .The following actions will resolve these dependencies: Keep the following packages at their current version: 1) libexpat1-dev [Not Installed] 2) libpython-dev [Not Installed] 3) libpython2.7-dev [Not Installed] 4) python-dev [Not Installed] 5) python2.7-dev [Not Installed] Accept this solution? [Y/n/q/?] n 這里一定要n，因為給的solution是保持現在的狀態，即不安裝 The following actions will resolve these dependencies: Downgrade the following packages: 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)] Accept this solution? [Y/n/q/?] y 接受新狀態就可以安裝了