进制: 二、八、十、十六进制转换

源码: converts.py

# -.- coding:utf-8 -.-
import unittest


class ComplexConverts(object):

    def __init__(self):
        self.func_maps = {
            "binary": self.binary,
            "octal": self.octal,
            "decimal": self.decimal,
            "hexadecimal": self.hexadecimal
        }

    def all(self, value):
        keys = self.detect(value)
        result = {}

        if keys:
            integer = keys[0][1]
            for k, func in self.func_maps.items():
                result.update({k: func(integer)})
        return result

    def detect_and_convert(self, value):
        keys = self.detect(value)
        return {i: self.func_maps[i[0]](i[1]) for i in keys}

    @classmethod
    def detect(cls, value):
        """
        检测思路


        :return: [('binary'|'octal'|'decimal'|'hexadecimal', integer)]
        """
        result = []
        err_msg = u"仅支持数字或进制字符监测."
        if not isinstance(value, (int, str)):
            raise RuntimeError(err_msg)

        hexadecimal = cls._detect_hexadecimal(value)
        if hexadecimal:
            result.append(hexadecimal)

        decimal = cls._detect_decimal(value)
        if decimal:
            result.append(decimal)

        octal = cls._detect_octal(value)
        if octal:
            result.append(octal)

        binary = cls._detect_binary(value)
        if binary:
            result.append(binary)

        return result

    @classmethod
    def _detect_binary(cls, value):
        if isinstance(value, str):
            value = value.lower()
            allowed = ("0", "1", "b")
            error = [i for i in value if i not in allowed]
            if error:
                return False
            if "b" in value and not value.startswith("0b"):
                return False
            value = int(value, 2)
        return "binary", value

    @classmethod
    def _detect_octal(cls, value):
        if isinstance(value, str):
            allowed = ("0", "1", "2", "3", "4", "5", "6", "7")
            error = [i for i in value if i not in allowed]
            if error:
                return False
            value = int(value, 8)
        return "octal", value

    @classmethod
    def _detect_decimal(cls, value):
        if isinstance(value, str):
            if not value.isdigit():
                return False
            value = int(value, 10)
        return "decimal", value

    @classmethod
    def _detect_hexadecimal(cls, value):
        result = "hexadecimal"
        if isinstance(value, str):
            value = value.lower()
            allowed = ("0", "1", "2", "3", "4", "5", "6", "7",
                       "8", "9", "a", "b", "c", "d", "e", "f",
                       "x")
            error = [i for i in value if i not in allowed]
            if error:
                return False

            if value.startswith("0x"):
                value = int(value, 16)
                return result, value
            elif value.isdigit():
                value = int(value, 16)
                return result, value
            else:
                return False
        return result, value

    @classmethod
    def binary(cls, value):
        return bin(value)

    @classmethod
    def octal(cls, value):
        return oct(value)

    @classmethod
    def decimal(cls, value):
        return int(value)

    @classmethod
    def hexadecimal(cls, value):
        return hex(value)


class TestComplexConverts(unittest.TestCase):

    def setUp(self):
        self.cc = ComplexConverts()

    def test_detect_binary(self):
        s = self.cc.detect("0b11111111")
        self.assertEqual(s, [("binary", 255)])

    def test_detect_hexadecimal(self):
        s = self.cc.detect("0xaf")
        self.assertEqual(s, [("hexadecimal", 175)])

    def test_detect_multi_type(self):
        s = self.cc.detect("6")
        self.assertEqual(sorted(s),
                         sorted([("octal", 6),
                                 ("decimal", 6),
                                 ("hexadecimal", 6)]))

    def test_convert_all(self):
        value = "6"
        s = self.cc.all(value)
        self.assertEqual(s, {'octal': oct(int(value)),
                             'binary': bin(int(value)),
                             'decimal': int(value),
                             'hexadecimal': hex(int(value))})

        value = "0xaf"
        s = self.cc.all(value)
        self.assertEqual(s, {'octal': oct(int(value, 16)),
                             'binary': bin(int(value, 16)),
                             'decimal': int(value, 16),
                             'hexadecimal': hex(int(value, 16))})

        value = "0b11101010"
        s = self.cc.all(value)
        self.assertEqual(s, {'octal': oct(int(value, 2)),
                             'binary': bin(int(value, 2)),
                             'decimal': int(value, 2),
                             'hexadecimal': hex(int(value, 2))})

 
 

测试: main.py

import unittest


TEST_MODULE = [
    "converts",
]


if __name__ == '__main__':
    suite = unittest.defaultTestLoader.loadTestsFromNames(TEST_MODULE)
    runner = unittest.TextTestRunner(verbosity=2)
runner.run(suite)