Convert a list of floats to a list of strings in Python

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

Table Of Contents

Method 1: Using List Comprehension and str()

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

Let’s see the complete example,

listOfFloats = [11.1, 12.4, 13.7, 15.9, 18.1, 29.8]

# convert list of floats to list of strings
listOfStrs = [str(elem) for elem in listOfFloats]

print(listOfStrs)

Output

['11.1', '12.4', '13.7', '15.9', '18.1', '29.8']

Method 2: Using map() function

Pass the str() method, and list of floats to the map() function. It will apply str() method on each float in the list, to convert it to a string. It stores all the converted strins into a mapped object. Then convert that mapped object into a list of strings using list() method.

Let’s see the complete example,

listOfFloats = [11.1, 12.4, 13.7, 15.9, 18.1, 29.8]

# convert list of floats to list of strings
listOfStrs = list(map(str, listOfFloats))

print(listOfStrs)

Output

['11.1', '12.4', '13.7', '15.9', '18.1', '29.8']

Method 3: Using NumPy Array

Construct a NumPy Array from list, but pass the dtype as str in the array constructor along with the list of floats. It will create a NumPy Array of strings, by converting the floats in list to strings. Then convert this array of strings into a list of strings.

This way we can convert a list of floats to a list of strings.

Let’s see the complete example,

import numpy as np

listOfFloats = [11.1, 12.4, 13.7, 15.9, 18.1, 29.8]

# convert list of floats to list of strings
listOfStrs = np.array(listOfFloats, str).tolist()

print(listOfStrs)

Output

['11.1', '12.4', '13.7', '15.9', '18.1', '29.8']

Summary

We learned about different ways to construct a list of strings from a list of floats in Python.