55 lines
1.2 KiB
Python
55 lines
1.2 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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简单的计算器程序
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"""
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def add(a, b):
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"""加法运算"""
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return a + b
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def subtract(a, b):
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"""减法运算"""
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return a - b
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def multiply(a, b):
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"""乘法运算"""
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return a * b
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def divide(a, b):
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"""除法运算"""
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if b == 0:
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raise ValueError("除数不能为零")
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return a / b
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def calculator():
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"""主计算器函数"""
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print("欢迎使用计算器！")
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print("可用操作：+、-、*、/")
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try:
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num1 = float(input("请输入第一个数字："))
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operator = input("请输入运算符：")
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num2 = float(input("请输入第二个数字："))
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if operator == '+':
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result = add(num1, num2)
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elif operator == '-':
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result = subtract(num1, num2)
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elif operator == '*':
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result = multiply(num1, num2)
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elif operator == '/':
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result = divide(num1, num2)
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else:
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print("无效的运算符")
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return
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print(f"结果：{result}")
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except ValueError as e:
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print(f"错误：{e}")
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except Exception as e:
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print(f"发生未知错误：{e}")
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if __name__ == "__main__":
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calculator() |