For loop in Python

Automate repetitive tasks using for loop

In Python, the for loop is a powerful tool that allows us to repeat a block of code for each element in a sequence, such as a list or a string. It helps us automate repetitive tasks and work with collections of data more efficiently.

Syntax

The basic syntax of a for loop looks like this:

for element in sequence:
    # Code block executed for each element

Let's break down the parts of the syntax:

• element

  This is a variable that represents each individual element in the sequence. You can choose any name you like for this variable.

• sequence

  This is the collection of elements that we want to iterate over. It can be a list, a string, or any other iterable object.

• Code block

  This is the set of instructions that will be executed for each element in the sequence. It can contain one or more lines of code.

Example

Let's see a practical example of how the for loop works. Imagine we have a list of fruits, and we want to print each fruit on a separate line:

fruits = ['apple', 'banana', 'orange', 'grape']
for fruit in fruits:
    print(fruit)

When we run this code, it will output:

apple
banana
orange
grape

As you can see, the for loop iterates over each fruit in the list and executes the code block inside the loop for each iteration.

Fundamental construct in Python

The for loop is a fundamental construct in Python that allows us to work with collections of data efficiently. By understanding how to use it, you can automate repetitive tasks and process large amounts of information easily. Keep practicing and exploring different use cases to become a proficient Python programmer!