转换列表列表中的pd.DataFrame，同时将“np.nan”值替换为空文本“”

import pandas as pd
import numpy as np

def convert_dataframe_to_text(data):
    # 将pd.DataFrame转换为文本
    text = data.to_string(index=False, na_rep='')
    
    # 将"np.nan"值替换为空文本""
    text = text.replace('nan', '')
    
    return text

# 示例数据
data = pd.DataFrame({'A': [1, 2, np.nan], 'B': [3, np.nan, 4]})

# 转换为文本并替换值
text = convert_dataframe_to_text(data)
print(text)

 A  B
 1  3
 2