前复权数据计算代码实现

当计算前复权数据时，需要考虑到股票的拆股和送股情况。下面是一个示例代码，用于计算前复权数据：

import pandas as pd

def calculate_adjusted_close(original_close, split_ratio, dividend_ratio):
    adjusted_close = original_close * split_ratio / dividend_ratio
    return adjusted_close

def calculate_forward_adjustment_factor(split_ratios):
    forward_adjustment_factor = split_ratios.cumprod()
    return forward_adjustment_factor

def calculate_backward_adjustment_factor(split_ratios):
    backward_adjustment_factor = 1 / calculate_forward_adjustment_factor(split_ratios[::-1])[::-1]
    return backward_adjustment_factor

def calculate_forward_adjusted_data(original_data):
    split_ratios = original_data['Split Ratio'].fillna(1)
    dividend_ratios = original_data['Dividend Ratio'].fillna(1)
    
    forward_adjustment_factor = calculate_forward_adjustment_factor(split_ratios)
    
    original_close = original_data['Close']
    forward_adjusted_close = calculate_adjusted_close(original_close, forward_adjustment_factor, dividend_ratios)
    
    forward_adjusted_data = original_data.copy()
    forward_adjusted_data['Close'] = forward_adjusted_close
    
    return forward_adjusted_data

def calculate_backward_adjusted_data(original_data):
    split_ratios = original_data['Split Ratio'].fillna(1)
    dividend_ratios = original_data['Dividend Ratio'].fillna(1)
    
    backward_adjustment_factor = calculate_backward_adjustment_factor(split_ratios)
    
    original_close = original_data['Close']
    backward_adjusted_close = calculate_adjusted_close(original_close, backward_adjustment_factor, dividend_ratios)
    
    backward_adjusted_data = original_data.copy()
    backward_adjusted_data['Close'] = backward_adjusted_close
    
    return backward_adjusted_data

# 示例用法
original_data = pd.read_csv('original_data.csv')
forward_adjusted_data = calculate_forward_adjusted_data(original_data)
backward_adjusted_data = calculate_backward_adjusted_data(original_data)

在上面的代码中，我们使用了 `pandas` 库来处理数据。假设原始数据包含以下列：日期（Date）、收盘价（Close）、拆股比例（Split Ratio）和送股比例（Dividend Ratio）。

`calculate_adjusted_close` 函数用于计算调整后的收盘价。`calculate_forward_adjustment_factor` 函数用于计算前复权因子，即拆股和送股比例的累积乘积。`calculate_backward_adjustment_factor` 函数用于计算后复权因子，即前复权因子的倒数。

`calculate_forward_adjusted_data` 函数使用前复权因子和分红比例来计算前复权数据。`calculate_backward_adjusted_data` 函数使用后复权因子来计算后复权数据。

请注意，上述代码仅为示例，实际使用时需要根据具体数据格式和需求进行适当修改。