Python内置函数bin() oct()等实现进制转换
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：
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.
bin()、oct()、hex()的返回值均为字符串，且分别带有0b、0o、0x前缀。 您可能感兴趣的文章:Python 字符串与二进制串的相互转换示例Python二进制串转换为通用字符串的方法Python 十六进制整数与ASCii编码字符串相互转换方法Python 16进制与中文相互转换的实现方法python十进制和二进制的转换方法(含浮点数)Python 内置函数进制转换的用法(十进制转二进制、八进制、十六进制)Python3进制之间的转换代码实例
先看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。 您可能感兴趣的文章:Python 字符串与二进制串的相互转换示例Python二进制串转换为通用字符串的方法Python 十六进制整数与ASCii编码字符串相互转换方法Python 16进制与中文相互转换的实现方法python十进制和二进制的转换方法(含浮点数)Python 内置函数进制转换的用法(十进制转二进制、八进制、十六进制)Python3进制之间的转换代码实例
