python 2进制，8进制，10进制，16进制转换

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本文详细介绍了Python中不同进制间的数字转换方法，包括2进制(bin)、8进制(oct)、10进制(int)及16进制(hex)的相互转换。通过具体的代码实现展示了如何从一种进制转换到另一种进制。

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python里的进制转换并不复杂，大家只需要记住，目标进制为2进制时，就用bin(),目标进制是8进制的时候用oct(),目标进制是10进制的时候用int(),目标进制是16进制的时候用hex()

#coding=utf-8
'''
Created on 2016-3-28

@author: Administrator
'''
class NumberType():
    Binary = 1
    Eigth = 2
    Decimal = 3
    Hex = 4
    

def transfer_number(str_number,oldtype,newtype):
    number = ''
    if oldtype == NumberType.Binary:
        if newtype == NumberType.Eigth:
            number = oct(int(str_number, 2))
            
        if newtype == NumberType.Decimal:
            number = int(str_number,2)
            
        if newtype == NumberType.Hex:
            number = hex(int(str_number,2))
        
    if oldtype == NumberType.Decimal:
        
        if newtype == NumberType.Binary:
            number = bin(int(str_number))
        if newtype == NumberType.Eigth:
            number = oct(int(str_number))
        if newtype == NumberType.Hex:
            number = hex(int(str_number)) 
            
    if oldtype == NumberType.Eigth:
        if newtype == NumberType.Binary:
            number = bin(int(str_number, 8))
        if newtype == NumberType.Decimal:
            number = int(str_number, 8)
        if newtype == NumberType.Hex:
            number = hex(int(str_number, 8))
            
    if oldtype == NumberType.Hex:
        if newtype == NumberType.Binary:
            number = bin(int(str_number, 16))
        if newtype == NumberType.Eigth:
            number = oct(int(str_number, 16))
        if newtype == NumberType.Decimal:
            number = int(str_number, 16)
            
    return str(number)
    
if __name__ =='__main__':
    print transfer_number('2054', NumberType.Decimal, NumberType.Hex)

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