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034.Test_bin_ascii.py
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034.Test_bin_ascii.py
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#
#
#
# WHAT ARE YOU DOING? NOT COMMIT LIKE SMOKING.
import binascii
import struct
def example(express, result=None):
if not result:
result = eval(express)
print(express, ' ==> ', result)
if __name__ == '__main__':
print('整数之间的进制转换:')
print("10进制转16进制", end=': ')
example("hex(16)")
print("16进制转10进制", end=': ')
example("int('0x10', 16)")
print("类似的还有oct()， bin()")
print('\n-------------------\n')
print('字符串转整数:')
print("10进制字符串", end=": ")
example("int('10')")
print("16进制字符串", end=": ")
example("int('10', 16)")
print("16进制字符串", end=": ")
example("int('0x10', 16)")
print('\n-------------------\n')
print('字节串转整数:')
print("转义为short型整数", end=": ")
example(r"struct.unpack('<hh', bytes(b'\x01\x00\x00\x00'))")
print("转义为long型整数", end=": ")
example(r"struct.unpack('<L', bytes(b'\x01\x00\x00\x00'))")
print('\n-------------------\n')
print('整数转字节串:')
print("转为两个字节", end=": ")
example("struct.pack('<HH', 1,2)")
print("转为四个字节", end=": ")
example("struct.pack('<LL', 1,2)")
print('\n-------------------\n')
print('字符串转字节串:')
print('字符串编码为字节码', end=": ")
example(r"'12abc'.encode('ascii')")
print('数字或字符数组', end=": ")
example(r"bytes([1,2, ord('1'),ord('2')])")
print('16进制字符串', end=': ')
example(r"bytes().fromhex('010210')")
print('16进制字符串', end=': ')
example(r"bytes(map(ord, '\x01\x02\x31\x32'))")
print('16进制数组', end=': ')
example(r'bytes([0x01,0x02,0x31,0x32])')
print('\n-------------------\n')
print('字节串转字符串:')
print('字节码解码为字符串', end=": ")
example(r"bytes(b'\x31\x32\x61\x62').decode('ascii')")
print('字节串转16进制表示,夹带ascii', end=": ")
example(r"str(bytes(b'\x01\x0212'))[2:-1]")
print('字节串转16进制表示,固定两个字符表示', end=": ")
example(r"str(binascii.b2a_hex(b'\x01\x0212'))[2:-1]")
print('字节串转16进制数组', end=": ")
example(r"[hex(x) for x in bytes(b'\x01\x0212')]")
# 整数之间的进制转换:
# 10进制转16进制: hex(16) ==> 0x10
# 16进制转10进制: int('0x10', 16) ==> 16
# 类似的还有oct()， bin()
#
# -------------------
#
# 字符串转整数:
# 10进制字符串: int('10') ==> 10
# 16进制字符串: int('10', 16) ==> 16
# 16进制字符串: int('0x10', 16) ==> 16
#
# -------------------
#
# 字节串转整数:
# 转义为short型整数: struct.unpack('<hh', bytes(b'\x01\x00\x00\x00')) ==> (1, 0)
# 转义为long型整数: struct.unpack('<L', bytes(b'\x01\x00\x00\x00')) ==> (1,)
#
# -------------------
#
# 整数转字节串:
# 转为两个字节: struct.pack('<HH', 1,2) ==> b'\x01\x00\x02\x00'
# 转为四个字节: struct.pack('<LL', 1,2) ==> b'\x01\x00\x00\x00\x02\x00\x00\x00'
#
# -------------------
#
# 字符串转字节串:
# 字符串编码为字节码: '12abc'.encode('ascii') ==> b'12abc'
# 数字或字符数组: bytes([1,2, ord('1'),ord('2')]) ==> b'\x01\x0212'
# 16进制字符串: bytes().fromhex('010210') ==> b'\x01\x02\x10'
# 16进制字符串: bytes(map(ord, '\x01\x02\x31\x32')) ==> b'\x01\x0212'
# 16进制数组: bytes([0x01,0x02,0x31,0x32]) ==> b'\x01\x0212'
#
# -------------------
#
# 字节串转字符串:
# 字节码解码为字符串: bytes(b'\x31\x32\x61\x62').decode('ascii') ==> 12ab
# 字节串转16进制表示,夹带ascii: str(bytes(b'\x01\x0212'))[2:-1] ==> \x01\x0212
# 字节串转16进制表示,固定两个字符表示: str(binascii.b2a_hex(b'\x01\x0212'))[2:-1] ==> 01023132
# 字节串转16进制数组: [hex(x) for x in bytes(b'\x01\x0212')] ==> ['0x1', '0x2', '0x31', '0x32']