centos gui has been crashed
 

My centos 7 machine is not start with GUI.No one desktop application cannot run in my system.please give me some suggestion to access my machine with gui.
This problem is inuing from the last 1 week only.

what is the probelm .
how can i aviod this probelm.
bacause of the problem only,I cannot use my system .
And my work mind also not on the system.

where is that message from?

in any case, it's just a python error and probably not the cause for the "crash".

what exactly happens when you boot? at which point does it fail? what do you get in the end? a black screen with an X cursor? or a text interface (tty, terminal, console...)?

When i restart my system I got that balck screen with that error message only in the tty1.
After that i will switch to another mode like tty2.
How to solve that python error?

I have tried all the X windwos desktop apps.No one is giving me a desktop utility.
please anybody help me .

Did you recently try to "upgrade" python2?

yes.before a week I have upgraded my system.
 

thankyou for youreply .
But I didnt know at that time ,this upgrade will cause that issue.
Is there any way to downgrade my system.
I have tried all the desktop tools by removeing reinstalling.
But no one help me out.
Before 4 days gnome only didnt work.
At that time I was using kde desktop.that was not user friendly.thats why I have planned to remove that and tried to install another desktop tools.
Now No one gui is starting .
please help me

CentOS is for SERVERS !!!

try fedora...

thank you for your quick reply
 

I need to use this system only in my office.thats why I cant change the os and also I want to learn redhat based systems.


please give me the tips to solve this probelm

Since you attempted to upgrade python2, I suggest a re-install of the OS.

Don't, ever, EVER upgrade python2 again. EVER!

Is there any way to downgrade python?

or
can i proceed to install the old version of python.

If i installed the previous version ,Is there any possibilities to work around the problem.?

Save your data, verify backups.
format and re-install.
It's the only way to be sure, AND the only way you're going to learn.

Never upgrade python on RHEL/CentOS/Fedora outside of the standard "yum update".

Reinstall and restore the necessary files/configs from your backup, it will be the fastest and easiest way to fix the problem.

Oh My God..
I have more than 500GB backup and also INstalledmany softwares in my system.
I cannot reinstall.
Is there any way to restore the timeshift.
I have backedup by that software

Wrong...you CAN re-install. And did you honestly think your system was going to last FOREVER, and never, EVER break???
Yes...you run that software, and select the restore option. That is EXACTLY what backup software is, isn't it???? And unless you've got a snapshot from before you broke your system, you won't be able to restore it, will you?