>>> from mesura_ph import extreu_producte_mitjana

---- inici

>>> p, m = extreu_producte_mitjana('prodA,7.01,6.99,7.01,7.0\n')
>>> p
'prodA'
>>> round(m, 4)
7.0025

>>> p, m = extreu_producte_mitjana('prodX,7.0,7.0,7.0\n')
>>> p
'prodX'
>>> round(m, 4)
7.0

---- fi

>>> p, m = extreu_producte_mitjana('prodF,7.1,7.25,7.0,7.0\n')
>>> p
'prodF'
>>> round(m, 4)
7.0875

>>> p, m = extreu_producte_mitjana('prodB,6.97,6.99,7.07,6.96\n')
>>> p
'prodB'
>>> round(m, 4)
6.9975

>>> p, m = extreu_producte_mitjana('prodD,6.98,7.2,7.1,7.0\n')
>>> p
'prodD'
>>> round(m, 4)
7.07