Python 缺少1个必需的位置参数-财务

我试图进行投资组合优化，但随后出现了

TypeError:minimize\u sharpe（）缺少1个必需的位置参数：“log\u returns”

：请查找下面的摘录

import scipy.optimize as optimize 
optimal_sharpe=optimize.minimize(minimize_sharpe,
                                 initializer,
                                 method = 'SLSQP',
                                 bounds = bounds,
                                 constraints = constraints)
print(optimal_sharpe)

“minimize_sharpe”的定义包含以下代码

def minimize_sharpe(weights, log_returns):  
return -portfolio_stats(weights)['Sharpe']

---

我认为args需要这样引用。您所指的示例可能也不是将收益传递给portfolio_stats函数

def minimize_sharpe(weights, returns):  
    return -portfolio_stats(weights,returns)['sharpe'] 

import scipy.optimize as optimize
optimal_sharpe=optimize.minimize(minimize_sharpe,
                                 initializer,
                                 args = (returns,),
                                 method = 'SLSQP',
                                 bounds = bounds,
                                 constraints = constraints)