Calmar比率

def solve():
    import pandas as pd
    import numpy as np
    df = pd.read_csv(____)
    df['____'] = df['____'].pct_change()
    annual_ret = df['____'].mean() * ____
    cummax = df['____'].cummax()
    drawdown = (____) / cummax
    max_dd = abs(drawdown.min())
    calmar = annual_ret / max_dd
    print(____)