Convert a List of integers to List of floats in Python

This tutorial will discuss about unique ways to convert a list of integers to list of floats in Python.

Table Of Contents

Method 1: Using List Comprehension

Iterate over all elements of List usinga for loop inside the List Comprehension. During iteration convert each integer to float using the float() method, and construct a new list of these floats using List Comprehension.

Let’s see the complete example,

listOfNums = [11, 12, 13, 15, 18, 29]

# convert list of integers to list of floats
listOfFloats = [float(elem) for elem in listOfNums]

print(listOfFloats)

Output

[11.0, 12.0, 13.0, 15.0, 18.0, 29.0]

We connverted a List of Integers into a list of floats.

Method 2: Using map() method

Pass the float() method, and list of integers to the map() function. It will apply float() method on each integer in the list, and store converted float values in a mapped object. Then convert that mapped object into a list of floats using list() method.

Let’s see the complete example,

listOfNums = [11, 12, 13, 15, 18, 29]

# convert list of integers to list of floats
listOfFloats = list(map(float, listOfNums))

print(listOfFloats)

Output

[11.0, 12.0, 13.0, 15.0, 18.0, 29.0]

We connverted a List of Integers into a list of floats.

Method 3: Using NumPy Arrays

Create a NumPy Array from list of integers, but also pass the dtype as float while calling the numpy array constructor. It will store all integers from list as floats in the numpy array. Then convert the numpy array of floats into a list of floats. This way list of integers will be converted into a list of floats.

Let’s see the complete example,

import numpy as np

listOfNums = [11, 12, 13, 15, 18, 29]

# convert list of integers to list of floats
listOfFloats = np.array(listOfNums, dtype=float).tolist()

print(listOfFloats)

Output

[11.0, 12.0, 13.0, 15.0, 18.0, 29.0]

Summary

We discussed several ways to convert a list of integers into a list of floats in Python. Thanks.