Python中文件操作的常见问题及解决方法

import os

filename = 'test.txt'
if os.path.exists(filename):
    # 文件存在，进行相关操作
    with open(filename, 'r') as file:
        content = file.read()
    # 其他操作...
else:
    # 文件不存在，进行相应处理
    print('文件不存在')

import shutil

def write_file(filepath, content):
    # 获取磁盘空间
    total, used, free = shutil.disk_usage("/")
    if free > len(content):
        # 磁盘空间足够，可以写文件
        with open(filepath, 'w') as file:
            file.write(content)
        print('写入文件成功')
    else:
        # 磁盘空间不足，无法写入文件
        print('磁盘空间不足')

filename = 'test.txt'
text = 'Hello, World!'
write_file(filename, text)

def read_file(filepath, encoding='utf-8'):
    with open(filepath, 'r', encoding=encoding) as file:
        content = file.read()
    return content

filename = 'test.txt'
text = read_file(filename, encoding='gbk')
print(text)