# 
## Overview

In any programming language, the **`for` loop** is used to traverse the given object in a sequential manner.

In Python, the `for` loop is not like that of other programming languages. It behaves like an iterator method and the difference has been illustrated in one of the examples below. The body of the loop is differentiated from the remaining code by indentation.

## Syntax
``` Python
for iterator_var in sequence:
    loop_statements
```

## How to iterate specific times

To iterate over a sequence some specific times, we use the **`range()` function**, which gives a sequence with a default starting value of `0`. It increments by 1 unless the step size is modified, and ends at the number specified in the arguments.

Suppose the arguments are `range(2,14,2)`. The values would be `2,4,6,8,10,12`. Below is an example:


## Explanation

- Line 1: We run the `for` loop with the starting index value, `2`,
and ending value, `14`, of `2` increments every iteration.
- Line 2: We print the `x` value.

## How to iterate over a string
Strings can also be used as iterable objects in Python in a `for` loop. Below is an example:


for n in range(7):
    print("value on n is {}" .format(n), end='\n')

## Explanation

- Line 1: We run the `for` loop with `0-7` range with `1` increment every iteration.
- Line 2: We print the `n` value with the string.

## How to iterate over a list
We can also iterate over elements of a list. Below is an example:


breakfast = ["cereal", "bread", "yogurt"]
for x in breakfast:
  print(x)


## Explanation


- Line 1: We create a list with the name, `breakfast`. 
- Line 2: We iterate the `for` loop on the list.
- Line 3: We print the `x` value.

## Iterator and Iterable 

Iteration over the sequence in Python involves two types:
- #key# Iterable: The object the loop is iterating over #key#
- #key# Iterator: The object that does the actual iteration; it fetches the next item in the sequence #key#

Thus, `n = 7` will not stop our loop in the code below.



for n in range(7):
    print("value on n is {}" .format(n), end='\n')
    n = 7


## Explanation

- Line 1: We run the `for` loop with `0-7` range with `1` increment every iteration.
- Line 2: We print the `n` value with string.
- Line 3: We assign the value, `n = 7`.

Similarly, `for` loops can be used to iterate over a tuple, a dictionary, or even a set.

How the for loop works in Python

Python's for loops iterate over sequences like lists, strings, and ranges, differing from traditional loops by acting as iterator methods.

How the for loop works in Python

Overview

Syntax

Flow diagram

How to iterate specific times

Explanation

How to iterate over a string

Explanation

How to iterate over a list

Explanation

Iterator and Iterable

Explanation