Python输入输出从键盘到文件实战全面指南

# 使用print()函数输出文本
print("Hello, Python!")
# 使用input()函数获取用户输入
name = input("请输入您的名字：")
print(f"欢迎您，{name}!")

# 打开文件以读取内容
with open("example.txt", "r") as file:
    content = file.read()
    print(content)
# 打开文件以写入内容
with open("output.txt", "w") as file:
    file.write("这是写入的文本。")

import os
# 构建文件路径
file_path = os.path.join("data", "example.txt")
# 检查文件是否存在
if os.path.exists(file_path):
    print("文件存在。")
# 创建目录
os.makedirs("my_directory")
# 删除目录
os.rmdir("my_directory")

# 读取配置文件
config = {}
with open("config.txt", "r") as file:
    for line in file:
        key, value = line.strip().split("=")
        config[key] = value
# 修改配置并保存
config["username"] = "new_user"
with open("config.txt", "w") as file:
    for key, value in config.items():
        file.write(f"{key}={value}\n")

try:
    with open("file.txt", "r", encoding="utf-8") as file:
        content = file.read()
except FileNotFoundError:
    print("文件不存在。")
except UnicodeDecodeError:
    print("无法解码文件。")
else:
    print("文件读取成功。")