1.10. Exercise

1. Create three variables: name, age, and height. Assign them appropriate values and print each with its type.

In this exercise, you are asked to declare three different variables: name, age, and height. A variable is simply a way to store information in a program. Each variable should be assigned a specific value—such as a person's name, their age in years, and their height in meters or feet. After creating these variables, the next step is to display their values along with their data types using the print() function in Python, which allows you to output information to the console.

Think of variables like labeled boxes in a room. Each box holds a specific item: one box (the variable name) contains a person's name (like a label 'Alice'), another box (the variable age) contains a number that represents their age (say 25), and the last box (the variable height) might hold the height in meters (for example, 1.75). By opening each box, you can see what's inside and understand the type of item it holds.

2. Convert the string "23" to an integer and multiply it by 2.

In this task, you start with a string value of "23". Python treats this as text, not as a number, which means you can't perform mathematical operations directly on it. To use it in a mathematical context, you first need to convert it to an integer. This is done using the int() function, which takes the string and transforms it into a whole number. After conversion, you can multiply the integer by 2, which will result in 46.

Imagine you have a box labeled '23', but inside it is a piece of paper with the number written on it rather than the number itself. To use this number for calculations, you must take the paper out of the box and turn it into an actual number (like 23). Once you do that, performing the calculation (multiplying by 2) is as simple as saying '23 times 2 equals 46'.

3. Write a program that takes your city name, temperature, and a boolean indicating whether it’s raining.

In this final exercise, you are tasked with writing a simple program that collects a few different pieces of information: the name of your city (as a string), the temperature (as a float), and a boolean value (True or False) that indicates if it is raining. You'll need to input or set values for each of these variables and then use print statements to display them. This introduces you to managing multiple types of data in a program and reinforces how to handle variables effectively.

Picture yourself as a weather reporter for your city. When you announce the weather, you say something like, 'Today in New York, the temperature is 75 degrees and it is not raining.' Here, 'New York' is your city name, 75 is the temperature, and 'not raining' is a boolean statement (False) that tells your audience about the weather conditions. By programming this, you replicate how information is shared in real life.

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