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math — Mathematical functions — Python 3.9.1rc1 documentation This module provides access to the mathematical functions defined by the C standard. These functions cannot be used with complex numbers; use the functions of the same name from the cmath module if you require support for complex numbers. The distinction between functions which support complex numbers and those which don’t is made since most users do not want to learn quite as much mathematics as required to understand complex numbers. Receiving an exception instead of a complex result allows earlier detection of the unexpected complex number used as a parameter, so that the programmer can determine how and why it was generated in the first place. The following functions are provided by this module.

Try IPython from your Browser: PythonAnywhere IPython is an enhanced interactive Python interpreter, offering tab completion, object introspection, and much more. It's running on the right-hand side of this page, so you can try it out right now. Here's a quick micro-tutorial to get you started with some of the fun stuff it provides: Type imp then tab to get import then type nu and tab to see which modules you can import that start with 'nu'. Import numpy and type numpy? to get the full documentation for the numpy module. q exits the documentation view.

BeginnersGuide New to programming? Python is free and easy to learn if you know where to start! This guide will help you to get started quickly. Fonctions natives — Documentation Python 3.8.3 Open file and return a corresponding file object. If the file cannot be opened, an OSError is raised. See Reading and Writing Files for more examples of how to use this function. file is a path-like object giving the pathname (absolute or relative to the current working directory) of the file to be opened or an integer file descriptor of the file to be wrapped. (If a file descriptor is given, it is closed when the returned I/O object is closed, unless closefd is set to False.)

14. Arithmétique en nombres à virgule flottante : problèmes et limites — Documentation Python 2.7.18 Floating-point numbers are represented in computer hardware as base 2 (binary) fractions. For example, the decimal fraction has value 1/10 + 2/100 + 5/1000, and in the same way the binary fraction has value 0/2 + 0/4 + 1/8. These two fractions have identical values, the only real difference being that the first is written in base 10 fractional notation, and the second in base 2. Unfortunately, most decimal fractions cannot be represented exactly as binary fractions.

Unicode HOWTO — Python 3.8.3 documentation This HOWTO discusses Python’s support for the Unicode specification for representing textual data, and explains various problems that people commonly encounter when trying to work with Unicode. Introduction to Unicode Definitions Today’s programs need to be able to handle a wide variety of characters.