Card 3: Variables - Storing Information

In programming, we need to store information. We use variables for this, which are like labeled jars. In a kitchen in Andhra, you have jars for 'Rice', 'Lentils', and 'Chilli Powder'. In programming, we have variables for names, ages, and so on.

1. Creating a Variable

Story: Let's create a variable to store a city name. The variable is the "jar," and the city name is what's inside.

The Code: city = "Vijayawada"

2. Data Type: String (Text)

Story: "Vijayawada" is text. In programming, text is called a String. It's always wrapped in quotes.

Analogy: The name written on the jar's label.

3. Data Type: Integer (Number)

Story: Let's store the number of mangoes from a farm. Numbers don't need quotes.

The Code: mangoes = 150

4. Using Your Variables

Story: Now you can use the jar's label (the variable name) to get what's inside.

The Code: print("I live in", city) will show "I live in Vijayawada".

Python Code with Variables:

# Storing text (a String)
city = "Vijayawada"
print("The city is:", city)

# Storing a whole number (an Integer)
mangoes = 150
print("Number of mangoes:", mangoes)

Key Technical Terms

Variable: A named container for storing data.
Data Type: The type of data a variable holds (e.g., text or number).
String: A data type for text. Must be in quotes (e.g., "Hello").
Integer: A data type for whole numbers (e.g., 10, 50, -5).
Assignment (=): The act of giving a value to a variable. The `=` sign is the assignment operator.

Knowledge Check

If you have the code name = "Ramesh", what is the variable?

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