I cant figure out the right solution yet i feel so close. Anyone can help me out/

Question

Metric Dictionary Write a function that calculates the mean, median, variance, standard deviation, minimum and maximum of of list of items. You can assume the given list is contains only numerical entries, and you may use numpy functions to do this.

def dictionary_of_metrics(items):
    gauteng = {
       'mean': round(np.mean(items),2),
       'median': round(np.median(items),2),
       'std': round(np.std(items), 2),
       'var': round(np.var(items),2),
       'min': round(np.min(items),2),
       'max': round(np.max(items),2)  }

   return gauteng

This is the error message I get

NameError Traceback (most recent call last) ~\AppData\Local\Temp/ipykernel_10816/1906678183.py in ----> 1 dictionary_of_metrics(gauteng)

NameError: name 'gauteng' is not defined

Answer 1

Did you create the list of items list called 'gauteng' before calling the function? If not, you have to create the list of items before using it as a function argument. The code would be

def dictionary_of_metrics(items):
    gauteng = {
       'mean': round(np.mean(items),2),
       'median': round(np.median(items),2),
       'std': round(np.std(items), 2),
       'var': round(np.var(items),2),
       'min': round(np.min(items),2),
       'max': round(np.max(items),2)  }

    return gauteng

gauteng = [1,2,3,4,5]

dictionary_of_metrics(gauteng)

The function creates the gauteng dictionary in it's local scope. This cannot be accessed globally and it cannot be used for as function argument.