C2 W1 Having issue in assignment

Optimizing Functions of One Variable: Cost Minimization | Coursera

Can somone pls tell what I am supposed to correct here

I believe you have an obsolete version of the w1_uittest.py file.
This means you need to update the copy of w1_unittest.py that is in your File menu.
See this instructions in the “M4ML Resources” page → FAQ thread.