This script prompts the user to enter the sales figures, converts the input to floating-point numbers usingfloat(), and then calculates the total sales. 3. Using Functions To make your code reusable, you can create a function to add two numbers. Here’s an example: def add_sales(californ...
result = divide_numbers(10, 0) except ValueError as ve: print(ve)3.2.2 抛出自定义异常实例 为了更好地表达业务含义,我们也可以定义自己的异常类并抛出。 class NotEnoughFuelError(Exception): pass def drive_car(miles_to_drive, fuel_level): required_fuel = miles_to_drive * FUEL_CONSUMPTION_RATE...
# conditional.2.pylate =Falseiflate:print('I need to call my manager!')#1else:print('no need to call my manager...')#2 这次我将late = False,所以当我执行代码时,结果是不同的: $ python conditional.2.py no need to call my manager... 根据评估late表达式的结果,我们可以进入块#1或块#2...
In this section, you’ll learn how to do basic arithmetic, such as addition, subtraction, multiplication, and division, with numbers in Python. Along the way, you’ll learn some conventions for writing mathematical expressions in code.AdditionAddition is performed with the + operator:...
Let’s first extract the value of pi, which we know is math.pi. 我们可以把这个数除以2。 We can then take this number and divide that by 2. 这是π除以2。 So this is pi over 2. 为了得到这个数字的sin,我们说math.sin并使用math.pi除以2作为sin函数的输入。 To take the sin of this nu...
Numbers and built-in Math Functions in Python. In this tutorial, we will learn about numbers, mathematical operators and using math functions in python programming language.
Python’s subprocess module allows you to run shell commands and manage external processes directly from your Python code. By using subprocess, you can execute shell commands like ls or dir, launch applications, and handle both input and output streams. This module provides tools for error ...
Western Digital 机械硬盘的俯视图。由“Darkone”拍摄的图像经 CC BY-SA 2.5(creative commons . org/licenses/BY-SA/2 . 5/deed . en)许可 机械驱动器更实惠,但由于它们内部有移动部件,因此在过度振动和极端天气下,它们比固态硬盘更容易损坏。此外,固态硬盘通常运行速度更快。
2、代码风格 缩进在Python中与代码的执行关系密切,它通过缩进划分代码块,不同的缩进级别表示不同的代码层次; 注:必须使用空格,不能使用制表符,通常使用4个空格作为一个缩进层级。 3、python数据类型 python包括5种基本类型和4种集合类型。 基本类型:整型(int)、浮点型(float)、布尔型(bool)实际上是int子类、字符...
2.1.2 IDE中集成pdb调试 在诸如PyCharm、VS Code等现代集成开发环境中,pdb同样可以方便地集成使用。例如,在PyCharm中: 打开您的Python脚本。 在您想设置断点的代码行号处点击行号区域,会看到一个红色圆点标志,表示已设置断点。 启动调试模式,选择菜单栏的Run -> Debug,或使用快捷键(通常是Shift+F9)启动调试会话。