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17 sty 2013 · It's a function annotation. In more detail, Python 2.x has docstrings, which allow you to attach a metadata string to various types of object. This is amazingly handy, so Python 3 extends the feature by allowing you to attach metadata to functions describing their parameters and return values.
10 maj 2023 · Python float () function is used to return a floating-point number from a number or a string representation of a numeric value. Example: Here is a simple example of the Python float () function which takes an integer as the parameter and returns its float value. Python3. num = float(10)
float () Return Value. 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.
Let’s take some examples of using the Python float(). 1) Using float () to convert a string to a floating point number. The following example uses the float() to convert strings to floating point numbers: f = float('+1.99') print(f) # 👉 1.99 . f = float('-5.99') print(f) # 👉 -5.99 . f = float('199e-001') print(f) # 👉 19.9 . f = float('+1E3')
9 sty 2024 · 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.
The float() function in Python converts a number or a string that represents a floating-point number to a floating-point number. If no argument is passed, it returns 0.0. If the argument is a string that cannot be converted to a float, it raises a ValueError.
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.
