When you need Tkinter in your Python Code on CentOS 7, you can install it as following:
# yum install tkinter Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: data.aonenetworks.kr * epel: hk.mirrors.thegigabit.com * extras: data.aonenetworks.kr * nux-dextop: mirror.li.nux.ro * remi-php56: mirror.bebout.net * remi-php72: mirror.bebout.net * remi-safe: mirror.bebout.net * updates: data.aonenetworks.kr Resolving Dependencies --> Running transaction check ---> Package tkinter.x86_64 0:2.7.5-86.el7 will be installed --> Processing Dependency: python = 2.7.5-86.el7 for package: tkinter-2.7.5-86.el7.x86_64 --> Processing Dependency: libtk8.5.so()(64bit) for package: tkinter-2.7.5-86.el7.x86_64 --> Processing Dependency: libTix.so()(64bit) for package: tkinter-2.7.5-86.el7.x86_64 --> Running transaction check ---> Package python.x86_64 0:2.7.5-80.el7_6 will be updated --> Processing Dependency: python(x86-64) = 2.7.5-80.el7_6 for package: python-devel-2.7.5-80.el7_6.x86_64 ---> Package python.x86_64 0:2.7.5-86.el7 will be an update --> Processing Dependency: python-libs(x86-64) = 2.7.5-86.el7 for package: python-2.7.5-86.el7.x86_64 ---> Package tix.x86_64 1:8.4.3-12.el7 will be installed ---> Package tk.x86_64 1:8.5.13-6.el7 will be installed --> Running transaction check ---> Package python-devel.x86_64 0:2.7.5-80.el7_6 will be updated ---> Package python-devel.x86_64 0:2.7.5-86.el7 will be an update --> Processing Dependency: python2-rpm-macros > 3-30 for package: python-devel-2.7.5-86.el7.x86_64 --> Processing Dependency: python-rpm-macros > 3-30 for package: python-devel-2.7.5-86.el7.x86_64 ---> Package python-libs.x86_64 0:2.7.5-80.el7_6 will be updated ---> Package python-libs.x86_64 0:2.7.5-86.el7 will be an update --> Running transaction check ---> Package python-rpm-macros.noarch 0:3-32.el7 will be installed --> Processing Dependency: python-srpm-macros for package: python-rpm-macros-3-32.el7.noarch ---> Package python2-rpm-macros.noarch 0:3-32.el7 will be installed --> Running transaction check ---> Package python-srpm-macros.noarch 0:3-32.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: tkinter x86_64 2.7.5-86.el7 base 327 k Installing for dependencies: python-rpm-macros noarch 3-32.el7 base 8.8 k python-srpm-macros noarch 3-32.el7 base 8.4 k python2-rpm-macros noarch 3-32.el7 base 7.7 k tix x86_64 1:8.4.3-12.el7 base 254 k tk x86_64 1:8.5.13-6.el7 base 1.4 M Updating for dependencies: python x86_64 2.7.5-86.el7 base 95 k python-devel x86_64 2.7.5-86.el7 base 398 k python-libs x86_64 2.7.5-86.el7 base 5.6 M Transaction Summary ================================================================================ Install 1 Package (+5 Dependent packages) Upgrade ( 3 Dependent packages) Total download size: 8.1 M Is this ok [y/d/N]: y Downloading packages: Delta RPMs disabled because /usr/bin/applydeltarpm not installed. (1/9): python-2.7.5-86.el7.x86_64.rpm | 95 kB 00:00 (2/9): python-libs-2.7.5-86.el7.x86_64.rpm | 5.6 MB 00:00 (3/9): python-rpm-macros-3-32.el7.noarch.rpm | 8.8 kB 00:00 (4/9): python-srpm-macros-3-32.el7.noarch.rpm | 8.4 kB 00:00 (5/9): python2-rpm-macros-3-32.el7.noarch.rpm | 7.7 kB 00:00 (6/9): tix-8.4.3-12.el7.x86_64.rpm | 254 kB 00:00 (7/9): tk-8.5.13-6.el7.x86_64.rpm | 1.4 MB 00:00 (8/9): python-devel-2.7.5-86.el7.x86_64.rpm | 398 kB 00:00 (9/9): tkinter-2.7.5-86.el7.x86_64.rpm | 327 kB 00:00 -------------------------------------------------------------------------------- Total 13 MB/s | 8.1 MB 00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Updating : python-libs-2.7.5-86.el7.x86_64 1/12 Updating : python-2.7.5-86.el7.x86_64 2/12 Installing : 1:tk-8.5.13-6.el7.x86_64 3/12 Installing : 1:tix-8.4.3-12.el7.x86_64 4/12 Installing : python2-rpm-macros-3-32.el7.noarch 5/12 Installing : python-srpm-macros-3-32.el7.noarch 6/12 Installing : python-rpm-macros-3-32.el7.noarch 7/12 Updating : python-devel-2.7.5-86.el7.x86_64 8/12 Installing : tkinter-2.7.5-86.el7.x86_64 9/12 Cleanup : python-devel-2.7.5-80.el7_6.x86_64 10/12 Cleanup : python-2.7.5-80.el7_6.x86_64 11/12 Cleanup : python-libs-2.7.5-80.el7_6.x86_64 12/12 Verifying : python-devel-2.7.5-86.el7.x86_64 1/12 Verifying : python-2.7.5-86.el7.x86_64 2/12 Verifying : python-srpm-macros-3-32.el7.noarch 3/12 Verifying : tkinter-2.7.5-86.el7.x86_64 4/12 Verifying : 1:tix-8.4.3-12.el7.x86_64 5/12 Verifying : 1:tk-8.5.13-6.el7.x86_64 6/12 Verifying : python-libs-2.7.5-86.el7.x86_64 7/12 Verifying : python-rpm-macros-3-32.el7.noarch 8/12 Verifying : python2-rpm-macros-3-32.el7.noarch 9/12 Verifying : python-devel-2.7.5-80.el7_6.x86_64 10/12 Verifying : python-2.7.5-80.el7_6.x86_64 11/12 Verifying : python-libs-2.7.5-80.el7_6.x86_64 12/12 Installed: tkinter.x86_64 0:2.7.5-86.el7 Dependency Installed: python-rpm-macros.noarch 0:3-32.el7 python-srpm-macros.noarch 0:3-32.el7 python2-rpm-macros.noarch 0:3-32.el7 tix.x86_64 1:8.4.3-12.el7 tk.x86_64 1:8.5.13-6.el7 Dependency Updated: python.x86_64 0:2.7.5-86.el7 python-devel.x86_64 0:2.7.5-86.el7 python-libs.x86_64 0:2.7.5-86.el7 Complete!