pandas把dataframe等份分割

要将一个DataFrame分割成等份，可以使用以下代码：

import math
import pandas as pd
from tqdm import tqdm

def cut_df(file_name, n):
    df = pd.read_csv(file_name)
    df_num = len(df)
    every_epoch_num = math.floor((df_num/n))
    
    for index in tqdm(range(n)):
        file_name = f'./XXX_{index}.csv'
        
        if index < n-1:
            df_tem = df[every_epoch_num * index: every_epoch_num * (index + 1)]
        else:
            df_tem = df[every_epoch_num * index:]
        
        df_tem.to_csv(file_name, index=False)

其中，`file_name`是要切割的文件名，如果是Excel文件，只需修改读取函数即可。`n`是要将DataFrame分割成的份数。这段代码将把DataFrame分割成n个文件，并保存在当前目录下。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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