On 11/29/2016 2:10 AM, sunyeping wrote: > I installed an software called pymol in my centos 6.7 system. The installation process seemed to be successful but when I initialized pymol, I got the following error: > import _tkinter # If this fails your Python may not be configured for Tk > ImportError: libtk8.6.so: cannot open shared object file: No such file or directory. > How could I solve the problem? # yum provides \*/libtk8.\* Loaded plugins: ..... 1:tk-8.5.7-5.el6.x86_64 : The graphical toolkit for the Tcl scripting language Repo : base Matched from: Filename : /usr/lib64/libtk8.5.so it appeaqrs CentOS 6 only has tk-8.5, not 8.6, so this pymol thing you've installed must be built for some other distribution or version. -- john r pierce, recycling bits in santa cruz