centos7执行python时出现ImportError: No module named Tkinter

1、当运行python时出现如下错误：

Traceback (most recent call last):
  File "gradient_test_2.py", line 7, in 
    from common_libs import *
  File "/sunxj/student5/lr_test/common_libs.py", line 8, in 
    import matplotlib.pyplot as plt 
  File "/usr/lib64/python2.7/site-packages/matplotlib/pyplot.py", line 113, in 
    _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
  File "/usr/lib64/python2.7/site-packages/matplotlib/backends/__init__.py", line 60, in pylab_setup
    [backend_name], 0)
  File "/usr/lib64/python2.7/site-packages/matplotlib/backends/backend_tkagg.py", line 6, in 
    from six.moves import tkinter as Tk
  File "/usr/lib/python2.7/site-packages/six.py", line 203, in load_module
    mod = mod._resolve()
  File "/usr/lib/python2.7/site-packages/six.py", line 115, in _resolve
    return _import_module(self.mod)
  File "/usr/lib/python2.7/site-packages/six.py", line 82, in _import_module
    __import__(name)
ImportError: No module named Tkinter

2、此时需要安装两个包分别是：yum install -y tkinter和yum install -y tk-devel，如下图所示：