如何在文本文件中保存整个熊猫数据框

Question

这是我将几个带有一些描述的熊猫数据框保存到文本文件中的代码：

    import numy as np
    import pandas as pd
    rows=['row1','row2','row3', 'row4']
    data=np.random.randn(18, 4,3)
    with open(filename, "wb") as outfile:
         house_num = 0
         outfile.write(('Shape of house Array: {0}    \n'.format(data.shape)).encode())
         for data_slice in data:
             outfile.write(('@ House: {0} \n'.format(house_num)).encode())
             df=pd.DataFrame(data_slice,columns=list('XYZ'),dtype=float)
             df=df.rename(index={j:k for k, j in zip(rows,range(0,4))})
             text=df.to_string()
             np.savetxt(filename, text)
             house_num+=1

在最后一行，我收到一个错误 IndexError: tuple index out of range

我想获得这样的文本文件格式：

Shape of house Array: (18,4,3)
house: 0
             X         Y         Z
row1  1.376328  0.620332 -0.726298
row2 -0.671292  0.557585 -0.027483
row3  0.381491  1.798442  0.221806
row4 -0.223592 -0.297638 -0.258627
house: 1
             X         Y         Z
row1  1.376328  0.620332 -0.726298
row2 -0.671292  0.557585 -0.027483
row3  0.381491  1.798442  0.221806
row4 -0.223592 -0.297638 -0.258627
....

house: 18
             X         Y         Z
row1  1.376328  0.620332 -0.726298
row2 -0.671292  0.557585 -0.027483
row3  0.381491  1.798442  0.221806
row4 -0.223592 -0.297638 -0.258627

Answer 1

to_csv与sep='\t'属性一起使用。

df.to_csv('example.txt', sep='\t')