3、树莓派Pico W编程与LED项目实战

树莓派Pico W编程与LED项目实战

1. 编程示例

在编程学习中，我们会遇到各种有趣的示例，下面为大家详细介绍一些常见的编程示例。

1.1 电阻计算程序

此程序可依据用户输入的电阻连接模式（串联或并联），计算总电阻值。

mode = mode.lower()
#
# Read the resistor values and calculate the total
#
resistor = 0.0

if mode == 's':
    for n in range(0,N):
        s = "Enter resistor " + str(n+1) + " value in Ohms: "
        r = int(input(s))
        resistor = resistor + r
    print("Total resistance = %d Ohms" %(resistor))
elif mode == 'p':
    for n in range(0,N):
        s = "Enter resistor " + str(n+1) + " value in Ohms: "
        r = float(input(s))
        resistor = resistor + 1 / r
    print("Total resistance = %.2f Ohms" %(1 / resistor))
#
# Check if the user wants to exit
#
yn = input("\nDo you want to