import pandas as pd
from strategies.base import Strategy

class BuyAndHoldStrategy(Strategy):
    """
    A simple buy and hold strategy.
    """

    def generate_signals(self, data):
        """
        Generates equal weights for all assets.
        """
        tickers = data.columns
        weights = pd.DataFrame(1 / len(tickers), index=data.index, columns=tickers)
        return weights