Python csv.DictReader的内存使用问题

import csv

def process_csv(file_path):
    with open(file_path, 'r') as file:
        reader = csv.reader(file)
        for chunk in reader:
            # 处理每一块数据
            pass

import pandas as pd

def process_csv(file_path):
    chunk_size = 1000  # 每次读取的行数
    reader = pd.read_csv(file_path, chunksize=chunk_size)
    for chunk in reader:
        # 处理每一块数据
        pass

import csv

def read_csv(file_path):
    with open(file_path, 'r') as file:
        reader = csv.DictReader(file)
        for row in reader:
            yield row

def process_csv(file_path):
    for row in read_csv(file_path):
        # 处理每一行数据
        pass