Please tell me why jupyter notebook showing, name error 'np' is not defined, what should I do, every program showing like this

Answer 1

when you importing numpy did you do it like:
import numpy as np?

Answer 2

"np" is a common alias for the numpy module. See if the numpy module is installed.
If that's not the issue copy the whole error message and post it here.

Answer 3

Bro my problem is solved when I restart system
I write 1_3 program but showing everywhere name is errors 'np', 'pd'
Now running jupyter
Thanks everyone