发布于 2014-09-22 14:42:22 | 352 次阅读 | 评论: 0 | 来源: 网友投递
Python编程语言
Python 是一种面向对象、解释型计算机程序设计语言，由Guido van Rossum于1989年底发明，第一个公开发行版发行于1991年。Python语法简洁而清晰，具有丰富和强大的类库。它常被昵称为胶水语言，它能够把用其他语言制作的各种模块（尤其是C/C++）很轻松地联结在一起。
本文为大家讲解的是python下的如何实现进制转换,使用Python内置函数：bin()、oct()、int()、hex()可实现进制转换;先看Python官方文档中对这几个内置函数的描述,需要了解的朋友可以参考下
使用Python内置函数：bin()、oct()、int()、hex()可实现进制转换。
Python官方文档中对这几个内置函数的描述：
bin(x)
Convert an integer number to a binary string. The result is a valid Python expression. If x is not a Python int object, it has to define an __index__() method that returns an integer.
oct(x)
Convert an integer number to an octal string. The result is a valid Python expression. If x is not a Python int object, it has to define an __index__() method that returns an integer.
int([number | string[, base]])
Convert a number or string to an integer. If no arguments are given, return 0. If a number is given, return number.__int__(). Conversion of floating point numbers to integers truncates towards zero. A string must be a base-radix integer literal optionally preceded by ‘+' or ‘-‘ (with no space in between) and optionally surrounded by whitespace. A base-n literal consists of the digits 0 to n-1, with ‘a' to ‘z' (or ‘A' to ‘Z') having values 10 to 35. The default base is 10. The allowed values are 0 and 2-36. Base-2, -8, and -16 literals can be optionally prefixed with 0b/0B, 0o/0O, or 0x/0X, as with integer literals in code. Base 0 means to interpret exactly as a code literal, so that the actual base is 2, 8, 10, or 16, and so that int('010', 0) is not legal, while int('010') is, as well as int('010', 8).
hex(x)
Convert an integer number to a hexadecimal string. The result is a valid Python expression. If x is not a Python int object, it has to define an __index__() method that returns an integer.
| ↓ | 2进制 | 8进制 | 10进制 | 16进制 |
| 2进制 | - | bin(int(x, 8)) | bin(int(x, 10)) | bin(int(x, 16)) |
| 8进制 | oct(int(x, 2)) | - | oct(int(x, 10)) | oct(int(x, 16)) |
| 10进制 | int(x, 2) | int(x, 8) | - | int(x, 16) |
| 16进制 | hex(int(x, 2)) | hex(int(x, 8)) | hex(int(x, 10)) | - |
bin()、oct()、hex()的返回值均为字符串，且分别带有0b、0o、0x前缀。