带有CSV对象的嵌套for循环的问题

import csv
from multiprocessing import Pool

def process_row(row):
    # 处理每一行的逻辑
    return row

def process_csv(file_path):
    with open(file_path, 'r') as file:
        reader = csv.reader(file)
        with Pool(processes=4) as pool:  # 使用4个进程并行处理
            results = pool.map(process_row, reader)
    return results

import csv
import threading

lock = threading.Lock()
data = []

def process_row(row):
    with lock:
        data.append(row)

def process_csv(file_path):
    with open(file_path, 'r') as file:
        reader = csv.reader(file)
        threads = []
        for row in reader:
            thread = threading.Thread(target=process_row, args=(row,))
            threads.append(thread)
            thread.start()
        for thread in threads:
            thread.join()
    return data

import csv

def validate_row(row):
    # 验证每一行的逻辑
    return all(field.strip() for field in row)

def process_csv(file_path):
    valid_rows = []
    with open(file_path, 'r') as file:
        reader = csv.reader(file)
        for row in reader:
            if validate_row(row):
                valid_rows.append(row)
    return valid_rows