Python中csv文件的写入与读取方法例子

import csv
# 创建要写入的数据
data = [
    ['张三', 20, '男'],
    ['李四', 25, '女'],
    ['王五', 30, '男']
]
# 打开文件，指定写入模式
with open('data.csv', 'w', newline='') as file:
    # 创建csv写入对象
    writer = csv.writer(file)
    # 写入表头
    writer.writerow(['姓名', '年龄', '性别'])
    # 写入数据
    writer.writerows(data)

import csv
# 创建要写入的数据
data = [
    ['张三', 20, '男'],
    ['李四', 25, '女'],
    ['王五', 30, '男'],
    ['"Tom, Jerry"', 35, '男']
]
# 打开文件，指定写入模式
with open('data.csv', 'w', newline='') as file:
    # 创建csv写入对象
    writer = csv.writer(file)
    # 写入表头
    writer.writerow(['姓名', '年龄', '性别'])
    # 写入数据
    for row in data:
        # 将包含特殊字符的数据进行处理
        row[0] = row[0].replace('"', '""')
        row[0] = f'"{row[0]}"'
        writer.writerow(row)

import csv
# 打开文件，指定读取模式
with open('data.csv', 'r') as file:
    # 创建csv读取对象
    reader = csv.reader(file)
    # 遍历每一行数据
    for row in reader:
        print(row)

import csv
# 打开文件，指定读取模式
with open('data.csv', 'r') as file:
    # 创建csv读取对象
    reader = csv.reader(file)
    # 跳过表头
    next(reader)
    # 遍历每一行数据
    for row in reader:
        print(row)

import csv
# 打开文件，指定读取模式
with open('data.csv', 'r') as file:
    # 创建csv读取对象
    reader = csv.reader(file, quotechar='"')
    # 遍历每一行数据
    for row in reader:
        print(row)