Python中sys模块常用方法与变量实例探究

import sys

# 示例脚本名为 example.py
print("Script Name:", sys.argv[0])

# 打印所有命令行参数
print("Command Line Arguments:", sys.argv[1:])

import sys

# 查看默认编码
print("Default Encoding:", sys.getdefaultencoding())

# 修改默认编码为UTF-8
sys.setdefaultencoding("utf-8")

# 再次查看默认编码
print("Updated Encoding:", sys.getdefaultencoding())

import sys

def example_function():
    print("Function is running.")
    sys.exit(1)

example_function()
print("This line will not be executed.")

import sys

print("Python Version:", sys.version)

import sys

# 打印当前模块搜索路径
print("Current Path:", sys.path)

# 添加新的路径
sys.path.append("/path/to/new/module")
print("Updated Path:", sys.path)

import sys

# 保存原始的标准输出流
original_stdout = sys.stdout

# 重定向标准输出到文件
with open("output.txt", "w") as f:
    sys.stdout = f
    print("This will be written to output.txt")

# 恢复原始的标准输出流
sys.stdout = original_stdout
print("This will be printed to the console.")

import sys

print("Platform:", sys.platform)
print("Version:", sys.version_info)

import sys

# 获取当前模块的信息
current_module = sys.modules[__name__]
print("Current Module:", current_module)

import sys

try:
    x = 1 / 0
except ZeroDivisionError:
    exc_type, exc_value, exc_traceback = sys.exc_info()
    print(f"Exception Type: {exc_type}")
    print(f"Exception Value: {exc_value}")
    print(f"Exception Traceback: {exc_traceback}")

import sys

def cleanup_function():
    print("Cleaning up resources.")

# 将清理函数添加到 exitfunc 列表
sys.exitfunc = cleanup_function

# 退出程序时会调用清理函数
sys.exit(0)