在Python中从csv文件中提取列数据时遇到困难

import csv

with open('file.csv', 'r') as file:
    reader = csv.reader(file)
    next(reader)  # 跳过表头
    for row in reader:
        # 处理每一行数据

with open('file.csv', 'r') as file:
    reader = csv.reader(file)
    next(reader)  # 跳过表头
    for row in reader:
        column_data = row[1]  # 提取第二列数据
        # 处理列数据

with open('file.csv', 'r') as file:
    reader = csv.reader(file)
    next(reader)  # 跳过表头
    for row in reader:
        column1_data = row[1]  # 提取第二列数据
        column2_data = row[3]  # 提取第四列数据
        # 处理列数据

with open('file.csv', 'r') as file:
    reader = csv.reader(file)
    next(reader)  # 跳过表头
    for row in reader:
        try:
            column_data = row[1]  # 提取第二列数据
            # 处理列数据
        except IndexError:
            # 处理索引错误
            pass