For Loop with Range in Python: A Basic Introduction

In this article, we will be exploring the basics of for loops in Python programming language using different examples. We will also learn how to use the built-in `range()` and `enumerate()` methods in for loops.

A for loop is a fundamental concept in any programming language that allows you to execute a block of code repeatedly for a specified number of times. In Python, a for loop can iterate over every item in a list or go through every single character in a string and won't stop until it has gone through every character.

The basic syntax of a for loop in Python is as follows:

```

for variable in range(start, end):

# code to be executed

```

Where `start` and `end` are the starting and ending points of the sequence, respectively. For example, if we want to print numbers from 0 to 4, we can use the following code:

```

for number in range(0, 5):

print('Current Number: ', number)

```

This will output:

```

Current Number: 0

Current Number: 1

Current Number: 2

Current Number: 3

Current Number: 4

```

Another example of using `range()` in for loop is printing even numbers from 0 to 10:

```

for number in range(0, 11):

if number % 2 == 0:

print(number)

```

This will output:

```

We can also use `enumerate()` method to iterate over a sequence and keep track of the index of each item. For example, let's say we have a list of groceries and we want to print out the name and quantity of each item:

```

groceries = ''apple', 'banana', 'orange''

for index, grocery in enumerate(groceries):

print(f'Index: {index}, Grocery: {grocery}')

```

This will output:

```

Index: 0, Grocery: apple

Index: 1, Grocery: banana

Index: 2, Grocery: orange

```

In conclusion, for loops are an essential part of programming in Python and other languages. They allow us to execute a block of code repeatedly for a specified number of times, making our code more efficient and easier to maintain.

* A for loop is a type of control structure that allows you to execute a block of code repeatedly.

* The `range()` method in Python generates a sequence of numbers that can be used in for loops.

* The `enumerate()` method in Python allows us to iterate over a sequence and keep track of the index of each item.

For loop with range python