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Parse a string to float in Python (float() function)

Python float() function example: Here, we are going to learn how to convert a given string value to the float value in Python?
Submitted by IncludeHelp, on March 31, 2019

Given a string value (that contains float value) and we have to convert it into float value in Python.

To convert a string value to the float, we use float() function.

Python float() function

float() function is a library function in python, it is used to convert a given string or integer value to the float value.

Syntax:

    float(string_value/integer_value)

Example:

    Input:
    str = "10.23"
    print(float(str))
    Output:
    10.23

    Input:
    str = "1001"
    print(float(str))
    Output:
    1001.0

Python code to convert string to the float value

# python code to demonstrate example of 
# float() function

str1 = "10.23"
str2 = "1001"

# printing str1 & str2 types
print("type of str1: ", type(str1))
print("type of str2: ", type(str2))

# converting to float value
val1 = float(str1)
val2 = float(str2)

# printing types and values of val1 & val2
print("type of val1: ", type(val1))
print("type of val2: ", type(val2))

print("val1 = ", val1)
print("val2 = ", val2)

Output

type of str1:  <class 'str'>
type of str2:  <class 'str'>
type of val1:  <class 'float'>
type of val2:  <class 'float'>
val1 =  10.23
val2 =  1001.0