python 如何在python中将2字节长的字符串转换为整数
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How do I convert a string 2 bytes long to an integer in python
提问by sth
I have a python program I've inherited and am trying to extend.
我有一个我继承的 python 程序并且正在尝试扩展。
I have extracted a two byte long string into a string called pS.
我已经将一个两字节长的字符串提取到一个名为 pS 的字符串中。
pS 1st byte is 0x01, the second is 0x20, decimal value == 288
pS 第一个字节是 0x01，第二个是 0x20，十进制值 == 288
I've been trying to get its value as an integer, I've used lines of the form
我一直在尝试将其值作为整数，我使用了以下形式的行
x = int(pS[0:2], 16) # this was fat fingered a while back and read [0:3]
and get the message
并得到消息
ValueError: invalid literal for int() with base 16: '\x01 '
Another C programmer and I have been googling and trying to get this to work all day.
另一个 C 程序员和我一直在谷歌上搜索并试图让它工作一整天。
Suggestions, please.
建议，请。
回答by S.Lott
回答by sth
You can convert the characters to their character code with ordand then add them together in the appropriate way:
您可以将字符转换为它们的字符代码，ord然后以适当的方式将它们添加在一起：
x = 256*ord(pS[0]) + ord(pS[1])
