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May 10, 2023 · Learn how to use the float () function in Python to convert numbers or strings to floating-point values. See examples, syntax, exceptions and errors of the float () function.
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a Python float is a numerical data type that represents a floating-point number. A floating-point number is a number with a decimal point or exponent notation, indicating that a number is a certain number of digits before and after the decimal point or exponent. For example, the number 1.23 is a floating-point number with one digit before the decim...
There are multiple ways to create floating-point numbers in Python. Most of the time, you will simply enter the number as-is: But you may want to convert a number or a string to a float using the float() function. The variable f will become 2.0 in all cases below: You can also use scientific notation:
Working with floats is not much different from working with integers. You can do the usual addition, subtraction, multiplication, and division.
Let’s do a little experiment. For extra dramatic effect, try this for yourself first: Did you expect the output to be 0.3 like any normal person would? I don’t blame you, but you’re wrong! The output is actually 0.30000000000000004. As absurd as this might seem, there’s an explanation. First of all, some fractional numbers are endless. E.g., when y...
You can convert a float to other data types, such as int or str, using the built-in functions int() and str(). For example, the following code converts the float 1.23to an integer and a string:
6 days ago · Learn what float is in Python, how to use the float() function to convert integers or strings to floating-point numbers, and see examples of float values and operations. Float is a data type that represents decimal or fractional numbers with unlimited precision.
In Python 3 however, float (-3.65) returns -3.6499999999999999 which loses its precision. I want to print the list of floats, [-3.6499999999999999, 9.1699999999999999, 1.0] with 2 decimal points only. Doing something along the lines of '%.1f' % round (n, 1) would return a string.
Definition and Usage. The float() function converts the specified value into a floating point number.
The float() method returns: Equivalent floating point number if an argument is passed. 0.0 if no arguments passed. OverflowError exception if the argument is outside the range of Python float.
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In this tutorial, you'll learn about the Python float type, how Python represents the floating-point numbers, and how to test the floating-point number for equality.
