Learn Interfaces by Building an Equation Solver - Step 67

Tell us what’s happening:

i don’t understand. how it’s doing, please help me

Your code so far

# User Editable Region

            details_list = [f'concavity = {concavity}', f'{min_max} = {coord}']

# User Editable Region

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Challenge Information:

Learn Interfaces by Building an Equation Solver - Step 67

what do you not understand?