使用Python內置函數：bin()、oct()、int()、hex()可實現進位轉換。 先看Python官方文檔中對這幾個內置函數的描述： bin(x)Convert an integer number to a binary string. The result is a valid Pytho ...
使用Python內置函數：bin()、oct()、int()、hex()可實現進位轉換。
先看Python官方文檔中對這幾個內置函數的描述：
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進位 | 8進位 | 10進位 | 16進位 | |
| 2進位 | - | bin(int(x, 8)) | bin(int(x, 10)) | bin(int(x, 16)) |
| 8進位 | oct(int(x, 2)) | - | oct(int(x, 10)) | oct(int(x, 16)) |
| 10進位 | int(x, 2) | int(x, 8) | - | int(x, 16) |
| 16進位 | hex(int(x, 2)) | hex(int(x, 8)) | hex(int(x, 10)) | - |
bin()、oct()、hex()的返回值均為字元串，且分別帶有0b、0o、0x首碼。
