Within my Portfolio class, there is a method called portfolio_risk(self, year). Whenever I attempt to divide the result of this method by a number, an error occurs:
Float object is not callable
I believe this issue stems from the parentheses used in the portfolio_risk method. However, it is necessary to call this method for the calculation. Can you suggest an alternative approach to avoid encountering this error?
if Portfolio.portfolio_risk(1)/5 < 7:
print('meets criteria')
Additional context:
The structure of my class is as follows:
class Portfolio(import_data):
def __init__(self, number_yrs):
self.debt = [0 for i in range(number_yrs)]
# The import_csv function retrieves data from an Excel file and creates a list.
# This list (2D) establishes a property named self.sub_portfolio within the class.
# All values imported from the CSV file are floats.
self.import_csv('sub_portfolio')
self.debt[0] = self.debt_portfolio
def portfolio_risk(self, year):
# This function calculates the total risk for a specific year by summing up the risk column of a portfolio.
self.portfolio_risk = sum(a[0] for a in self.debt[year])
return(self.portfolio_risk)
Upon creating an instance of this class:
new_portfolio = Portfolio(5)
The Portfolio class resides in a file named portfolio_class.py. Within this file, the line below functions correctly during testing:
print(new_portfolio.portfolio_risk(0))
In another file, analysis.py, the following code snippet encounters an error:
nyears = 10
real_portfolio = Portfolio(nyears)
for i in range(nyears):
if i > 0:
# Use the prior year's portfolio as a base
the_debt_portfolio.debt[i] = the_debt_portfolio.debt[i-1]
if real_portfolio.portfolio_risk(i)/5 < 7:
print('within acceptable risk levels')
The new error message observed is:
line 29, in portfolio_risk
self.portfolio_risk = sum(a[0] for a in self.portfolio_risk[year])
TypeError: 'int' object is not iterable
This error differs from the previous 'Float object is not callable' notification.