W3Schools
w3schools.com › python › ref_func_float.asp
Python float() Function
Python Examples Python Compiler ... Python Interview Q&A Python Training ... The float() function converts the specified value into a floating point number....
Reddit
reddit.com › r/learnpython › what does the float function do?
r/learnpython on Reddit: What does the float function do?
September 9, 2020 -
I don't really understand it
Top answer 1 of 5
9
A float is a floating point number which is a computers representation of a real number (where an integer can only hold whole numbers, real numbers can also be decimals etc). All the float function does is convert what you give it into a floating point number. e.g float(10) will return 10.0 float("10") will also return 10.0 float("10.5") will return 10.5
2 of 5
3
On the surface, it can convert integers and numeric string literals into floating-point numbers which can be used to represent any real numbers instead of just whole numbers. That said, despite appearances, float is technically the class itself and not a function. That's why you can use the "function" when type hinting or checking if a value is a float with isinstance. first = float(3) second = float("7.5") stuff: float = 5.74 isinstance(first, float) Of course, the same goes for bool, str, int, list, tuple and dict. All classes. "But why do they look like functions? Aren't classes supposed to start with capital letters?" Excellent question. Basically, the built-ins were made exceptions to the rule as it's easier for beginners to understand them as functions that can change the type of objects; string to integer, string to list, and so on. They'll later learn that they're actually far more flexible than functions. Most classes outside of __builtins__ do use the proper naming convention, like pathlib.Path, as they're not the things beginners are expected to see when they start out. And there could be other reasons for the lowercase names, this is just my conjecture.
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Mimo
mimo.org › glossary › python › float
Python Floats: Coding Essentials | Learn Now
This typically happens in environments with limited precision, such as Java or JavaScript, but is rare in Python due to its flexible number handling. ... Python programs of any kind use the float data type for improved precision over integers.
GeeksforGeeks
geeksforgeeks.org › python › float-in-python
float() in Python - GeeksforGeeks
September 18, 2025 - In Python, the float() function is used to convert numbers or numeric strings into floating-point numbers. A floating-point number is simply a number with a decimal point (for example, 3.14, -0.5, or 10.0).
Python documentation
docs.python.org › 3 › tutorial › floatingpoint.html
15. Floating-Point Arithmetic: Issues and Limitations — Python 3.14.7 documentation
On most machines today, floats are approximated using a binary fraction with the numerator using the first 53 bits starting with the most significant bit and with the denominator as a power of two. In the case of 1/10, the binary fraction is 3602879701896397 / 2 ** 55 which is close to but not exactly equal to the true value of 1/10. Many users are not aware of the approximation because of the way values are displayed. Python only prints a decimal approximation to the true decimal value of the binary approximation stored by the machine.
Emeritus
emeritus.org › home › blog › coding › what is a float in python and how does it benefit programmers
What is a Float in Python and How Does it Benefit Programmers
August 12, 2025 - Float is a function or reusable code in the Python programming language that converts values into floating point numbers. Floating point numbers are decimal values or fractional numbers like 133.5, 2897.11, and 3571.213, whereas real numbers ...
Udacity
udacity.com › blog › floating-point-numbers-in-python-what-they-are-and-how-to-use-them
Floating Point Numbers in Python: What They Are and How to Use Them | Udacity
March 10, 2025 - Instead, they use a system called floating point representation. That’s why a seemingly easy and straightforward calculation can throw unexpected results. In Python, float is the built-in type for representing decimal numbers in our code.
CodeChef
codechef.com › learn › course › python › LTCPY05 › problems › PYTH25
Float datatype in Python Programming
In Python, you don't need to explicitly specify the type of a variable during declaration. The type is inferred based on the kind of value assigned to the variable. For example if you put decimal values in a variable, the type of variable becomes float.
Programiz
programiz.com › python-programming › methods › built-in › float
Python float()
Online Python Online JavaScript ... Online Go Online Rust Online Scala Online Dart Online R Online Ruby ... The float() method returns a floating point number from a number or a string....
The FinAnalytics
thefinanalytics.com › post › understanding-python-floats-operations-casting-and-best-practices
Understanding Python Floats: Operations, Casting, and Best Practices
June 1, 2025 - In simpler terms, a float is any number with a decimal point (e.g., 3.14) or an exponent (e.g., 1.5e3 for 1500). Floats are distinct from integers because they allow decimal fractions.
Simplilearn
simplilearn.com › home › resources › software development › python float() function: key concepts [with examples]
Python float() Function: Key Concepts [With Examples]
November 27, 2024 - Learn how the float() function in Python converts a specified value into a floating point number. Syntax: float(value). A key function for numeric conversions.
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Upgrad
upgrad.com › home › blog › data science › float in python: a step by step guide
Float in Python: A Step by Step Guide | upGrad blog
April 21, 2026 - It allows programmers a greater degree of precision when compared to integers · In Python, we use the float() method to return a float data type when the input is any specified value, string, or number
Real Python
realpython.com › ref › builtin-types › float
float | Python’s Built-in Data Types – Real Python
The built-in float data type represents floating-point numbers, which are numbers with a decimal point.
Scaler
scaler.com › home › topics › float() in python | python float() function
float() in Python | Python float() Function - Scaler Topics
March 15, 2022 - In Python Programming, float() is an inbuilt function that converts an integer or specific strings into floating-point values.
Python
docs.python.org › 3 › builtins › stdtypes.html
Built-in Types — Python 3.14.7 documentation
For ease of implementation and efficiency across a variety of numeric types (including int, float, decimal.Decimal and fractions.Fraction) Python’s hash for numeric types is based on a single mathematical function that’s defined for any rational number, and hence applies to all instances of int and fractions.Fraction, and all finite instances of float and decimal.Decimal.
Top answer 1 of 4
4
If your inputs are "sometimes" ints and "sometimes" floats then just wrap each input in a float(). You could make something more complex, but why would you?
2 of 4
1
You could check for the presence of a decimal point in your string to decide if you want to coerce it into a float or an int.
number = input()
if '.' in number:
number = float(number)
else:
number = int(float(number))
Kansas State University
textbooks.cs.ksu.edu › intro-python › 02-numbers › 02-floats
Floats :: Introduction to Python
June 27, 2024 - To create a variable that stores a floating-point value in Python, we can use an assignment statement that includes a value with a decimal point, like this:
Python
docs.python.org › 3 › library › decimal.html
decimal — Decimal fixed-point and floating-point arithmetic
With context set and decimals created, the bulk of the program manipulates the data no differently than with other Python numeric types. ... Construct a new Decimal object based from value. value can be an integer, string, tuple, float, or another Decimal object.
Career Karma
careerkarma.com › blog › python › python float: a step-by-step guide
Python Float: A Step-By-Step Guide | Career Karma
December 1, 2023 - We’ll also walk through programming examples that employ the float() method to convert integers and strings to floating-point numbers. Any numerical value entered into Python will be seen as a number, so it’s not necessary to declare that a value is a number.
Quora
quora.com › How-do-you-return-a-float-in-Python
How to return a float in Python - Quora
Answer (1 of 3): As usual, with the return statement. To ensure that a number which may or may not be a float is converted to a float, you might: * Invoke the float() function. * Make sure you do some calculation that involves a float.