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| astart = input('输入待处理数字或字符串：')
#a = int(astart)
bs = input('输入选择：1=数字2=字符串')
b = int(bs)
if b == 1:
c = int(input('数字是1=二进制2=十进制3=十六进制4=八进制'))
if c == 1:
a10 = int(astart,2)
print('转为十进制为：',a10,'\n转为八进制0o为：',oct(a10),'\n转为十六进制0xc为：',hex(a10))
elif c == 2:
a = int(astart)
a10 = a
print('转为二进制0b为：',bin(a),'\n转为八进制0o为：',oct(a),'\n转为十六进制0xc为：',hex(a))
elif c == 3:
a10 = int(astart,16)
print('转为十进制为：',a10,'\n转为八进制0o为：',oct(a10),'\n转为十六进制0xc为：',hex(a10))
elif c == 4:
a10 = int(astart,8)
print('转为十进制为：',a10,'\n转为八进制0o为：',oct(a10),'\n转为十六进制0xc为：',hex(a10))
by = a10.to_bytes((a10.bit_length() + 7) // 8, 'big') # 大端
print('转为字符串为：',by)
elif b == 2:
a2 = astart.encode('utf-8')
a2_10 = int.from_bytes(a2,'big')
print('转为二进制0b为：',bin(a2_10),'\n转为八进制0o为：',oct(a2_10),'\n转为十六进制0xc为：',hex(a2_10),'\n转为十进制为：',a2_10)
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