WEBVTT

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Parameters and return values and functions.

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In this video, we will learn how to use functions with return values.

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Display user input effectively.

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Functions are a fundamental part of programming.

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They can take input parameters and return a result.

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Now, let's use them in a practical program.

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We'll create an energy saver program that calculates the electricity consumption of a device.

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Energy saver program helps you calculate how much energy your device is used daily and monthly.

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Just enter the wattage and usage hours, and the program will show the energy consumption in kilowatt hours.

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It's a simple way to understand and save energy.

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Define a function to calculate energy.

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Def calculate energy, wattage hours.

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Daily energy is equal to wattage asterisk hours.

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Divided by 1000, monthly energy is equal to daily energy asterisk 30.

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Return, daily energy, KWH, daily energy, monthly energy, KWH, monthly energy.

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This function takes two inputs, wattage and hours.

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It calculates, daily energy, wattage asterisk hours, divided by 1000, to convert watts to kilowatt hours.

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Monthly energy, daily energy asterisk 30, assuming 30 days in a month.

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It returns the results as a dictionary, a labeled list.

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Welcome and device setup, print, welcome to the energy saver program.

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Devices is equal to lamp, fan, computer.

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Results is equal to braces.

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The program welcomes the user and lists the devices.

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Lamp, fan, and computer.

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Take user input.

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For device and devices, print F, backslash N, enter details for device.

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wattage is equal to float, input, wattage and watts.

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Hours is equal to float, input, hours of usage per day.

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Results, device is equal to calculate energy, wattage hours.

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For each device, it asks for the wattage and hours of usage.

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It calculates the energy using the calculate energy function.

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It stores the results in the results dictionary.

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Display the results.

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Print, backslash N, energy consumption report.

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For device, consumption and results dot items.

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Print, F, backslash N, device.

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For key, value and consumption dot items.

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Print, F, key, value dot 2F.

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The program prints a report showing the energy consumption for each device.

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For each device, it shows daily energy in kilowatt hours, monthly energy in kilowatt hours.

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The results are rounded to two decimal places for easy reading.

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Save the program with a name like, energysaverprogram.py.

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Click the Run button and check the energy consumption report to see the daily and monthly energy usage for each device.

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This program helps you understand how much energy your device is used and how to save energy.