用python pandas讀取大檔案

import  numpy as np
filename = r'./[filename].csv'
chunksize = 10 ** 6

def (df):
  

data = pd.read_csv(filename, chunksize=chunksize)

# 運用chunksize來讀取檔案會使其建立 TextFileReader 因此要用下面方式來讀取文件內容
for df in data:
  process(df)