[PyMOL] APBS "%x format: an integer is required, not float" error in pymol installed with python 3.7 and "Qt not available, using GLUT/Tk interface" error

[sunyeping <sun...@al...>]

Dear everyone,

I am trying to use the APBS plugin in pymol to calculate protein electrostatic potentials. My system is centos 7. The pymol was installed with python 3.7 (~/software/build/anaconda3/bin/python). When I try to lauch the APBS Tool 2.1 from the plugin menu of pymol, a window jumps out which reads: "%x format: an integer is required, not float". I've googled it and learned that this error may related to python version. So I try to swith to pymol installed with python2.7 (/usr/bin/python)
 I install pymol following the guide at https://pymolwiki.org/index.php/Linux_Install, with the command:

 /usr/bin/python setup.py  install --prefix=~/software/pymol/pymol-python2.7-install

After the installation finished, I tried to lauch pymol, but meet the error:

Qt not available, using GLUT/Tk interface
Traceback (most recent call last):
  File "/home/sunyp/software/pymol/pymol-python2.7-install/lib64/python2.7/site-packages/pymol/__init__.py", line 65, in <module>
    pymol.launch(args)
  File "/home/sunyp/software/pymol/pymol-python2.7-install/lib64/python2.7/site-packages/pymol/__init__.py", line 436, in launch
    _cmd.runpymol(_cmd._get_global_C_object(), block_input_hook)
NotImplementedError: compile with --glut

Acturally the PyQt4 have been install in my system, I don't understand why it is not available by pymol. And why pymol installed with python3.7 doesn't have such a problem.  Even if I reinstall pymol with --glut option:

 /usr/bin/python setup.py  --glut build install --prefix=~/software/pymol/pymol-python2.7-install

the same error still comes out. Could you help me with this problem? Thank you in advance.
Best regards