how to get two decimal places in python

I ran into a problem today when I wrote the program. about how to control floating-point numbers only two digits after the decimal point, the normal idea is to use the round function, such as round (A, 2), but in the face of the following problems

It is the result of Lua's computation. We can see that the computation result is very accurate. It is the calculation result of Python3. We can see that the calculation result is inaccurate: the decimal computation in JavaScript is also inaccurate.

Detailed explanation of the basic mathematical computing usage in Python programming, detailed explanation of python programming mathematics QuantityIn Python, the provisions on logarithm are relatively simple and can be understood basically at the

Original author: a.m. kuchling (amk@amk.ca) Licensing: Authoring Sharing protocol Translation staff: Firehare Proofreading Staff: Leal Applicable version: Python 1.5 and subsequent versions http://wiki.ubuntu.org.cn/Python%E6%AD%A3%E5%88%99%E8%A1%A8%

By its very nature, a regular expression (or RE) is a small, highly specialized programming language that is embedded in Python and implemented through the RE module. With this small language, you can specify rules for the set of strings that you

1,pythons Object FeaturesFrom a more specific point of view, Python programs can be decomposed into modules, statements, expressions, and objects. A program consists of modules that contain statements, statements that contain expressions, and

This article mainly introduces the use of basic mathematical computing in Python programming. it focuses on division operations and the use of related division modules, for more information about how to use basic mathematical computing in Python

Python BASICS (10)-numbers, python basics-Numbers The topic of this article is numbers in Python. Describes each numeric type in detail, the various operators they apply, and the built-in functions used to process numbers. At the end of the article,

This article mainly shares Python common operation string function and method summary knot, including the string format output and splicing and other basic knowledge, need friends can refer to the next For example, a string Python, which is just a

A Module introduction1. What is a module?#常见的场景: A module is a python file that contains a set of functions, such as spam.py, which is named spam and can be used via import spam. #在python中, the module is used the same way, but in fact, the module