after clicking on the run button, a new cell is created with no error but also the code line dosent runs, the printf line gives no output
Jupyter didn't run the code
The error is probably due to the server error, try the following command in terminal
python -m pip install tornado==5.1.1
Later versions of tornado caused the server asynching problem.
Hope this cleared your doubt. 
Try restarting the kernel, switch off the real time scanning feature of the antivirus.
Also Make sure you have already installed the python and add it to the path variables.
i did try that
every possible solution that was available on the internet
Tell me the way how you installed everything.
I firstly installed python
after which i installed jupyter notebook
but jupyter wasnot working when i installed it
so i updated both python and jupyter the jupyter started opening in chrome but its not responding now as mentioned above
Did you add python path variables after installing python??
Just added but creates no difference
If you are on windows, I recommend uninstall everything, and install anaconda, it would be way much easier to deal with problems like. Here most probably there is problem with the installation process.
So install anaconda, it comes pre installed with python, and jupyter notebook needs to be installed i guess. Check it in anaconda prompt.
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okay sir
Thank you 
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