How to Iterate Float List in Python (original) (raw)

Last Updated : 18 Apr, 2024

We are given a list of floats and our task is to iterate the list of floats and print the result. In this article, we will see how to iterate the float list in Python.

**Example:

**Input: float_list = [3.14, 2.718, 1.618, 0.707]
**Output:
Using for loop:
3.14
2.718
1.618
0.707
**Explanation: Here, we are iterating over the list of floats and printing the result.

Python Iterate Over a List of Floats

Below are some of the ways by which we can iterate over a list of floats in Python:

Iterate Over a List of Floats Using the For loop

In this example, a list of floating-point numbers is iterated using a simple For loop, printing each number in the list on separate lines.

Python3 `

float_list = [3.14, 2.718, 1.618, 0.707]

Iterate over the list using a for loop

print("Using for loop:") for num in float_list: print(num)

`

Output

Using for loop: 3.14 2.718 1.618 0.707

**Time complexity: O(n) – where n is the number of elements in the list.
**Auxiliary space: O(1) – as we are not using any additional space.

Iterate Float List in Python Using For Loop and range()

In this example, a for loop with the range function is used to iterate over the indices of the **float_list, accessing each element by index and printing them on separate lines.

Python3 `

float_list = [3.14, 2.718, 1.618, 0.707]

Iterate over the list using for loop and range

print("Using for loop and range():") for i in range(len(float_list)): print(float_list[i])

`

Output

Using for loop and range(): 3.14 2.718 1.618 0.707

**Time complexity: O(n), where n is the length of the input list.
**Auxiliary space: O(1), which is constant space

Iterate Float List in Python Usinga While Loop

In this example, a while loop is utilized to iterate over the **float_list by incrementing an index variable until it reaches the length of the list, printing each element on separate lines.

Python3 `

float_list = [3.14, 2.718, 1.618, 0.707]

Iterate over the list using a while loop

print("Using while loop:") i = 0 while i < len(float_list): print(float_list[i]) i += 1

`

Output

Using while loop: 3.14 2.718 1.618 0.707

**Time complexity: O(n) where n is the length of the list.
**Auxiliary space: O(1) as only a constant amount of extra space is used for variables i and length.

Iterate Over a List of Floats Using list comprehension

In this example, list comprehension is employed to iterate over the float_list, printing each element on separate lines directly within the comprehension.

Python3 `

float_list = [3.14, 2.718, 1.618, 0.707]

Iterate over the list using list comprehension

print("Using list comprehension:") [print(num) for num in float_list]

`

Output

Using list comprehension: 3.14 2.718 1.618 0.707

Iterate Float List Using the map() function

In this example, the map() function is applied to iterate over the **float_list, using the print function as the mapping function to print each element on separate lines. The result is wrapped in a list to display the output.

Python3 `

float_list = [3.14, 2.718, 1.618, 0.707]

Iterate over the list using the map() function

print("Using map() function:") list(map(print, float_list))

`

Output

Using map() function: 3.14 2.718 1.618 0.707

**Time complexity: O(n), where n is the length of the list.
**Auxiliary space: O(1)