11.1 Traders Move Part III (Maximize Welfare)

[huizhao0804z]

I met the error as follows:

---

TypeError Traceback (most recent call last)

in
1 model = SugarcapeG1mt()
----> 2 model.run_model(step_count=1)

4 frames

in calculate_welfare(self, sugar, spice)
49 m_total = self.metabolism_sugar + self.metabolism_spice
50 # Cobb-Douglas functional form
---> 51 return sugar**(self.metabolism_sugar/m_total) * spice**(
52 self.metabolism_spice/m_total) # Error: cannot use / on tuples
53

TypeError: unsupported operand type(s) for /: 'tuple' and 'tuple'

[huizhao0804z]

I tried to fix it with:

def calculate_welfare(self, sugar, spice):
'''
helper function part 2 self.move()
'''
# calculate total resources
m_total = np.add(self.metabolism_sugar, self.metabolism_spice)
# Cobb-Douglas functional form
return sugar**(np.divide(self.metabolism_sugar, m_total)) * spice**(
np.divide(self.metabolism_spice, m_total))

[rht]

self.metabolism_sugar, self.metabolism_spice, and m_total are supposed to be int. I checked https://github.com/SFIComplexityExplorer/Mesa-ABM-Tutorial/blob/main/Session_11_Traders_Move_part_3.ipynb, and they are never set as tuple. You probably have an error somewhere in your code.