为什么 string.maketrans 在 Python 3.1 中不起作用? [英] How come string.maketrans does not work in Python 3.1?

问题描述

我是 Python 新手.

I'm a Python newbie.

为什么这个在 Python 3.1 中不起作用?

How come this doesn't work in Python 3.1?

from string import maketrans   # Required to call maketrans function.

intab = "aeiou"
outtab = "12345"
trantab = maketrans(intab, outtab)

str = "this is string example....wow!!!";
print str.translate(trantab);

当我执行上述代码时，我得到以下信息:

When I executed the above code, I get the following instead:

Traceback (most recent call last):
  File "<pyshell#119>", line 1, in <module>
    transtab = maketrans(intab, outtab)
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/string.py", line 60, in maketrans
    raise TypeError("maketrans arguments must be bytes objects")
TypeError: maketrans arguments must be bytes objects

必须是字节对象"是什么意思?如果可能的话，有人可以帮忙发布 Python 3.1 的工作代码吗?

What does "must be bytes objects" mean? Could anyone please help post a working code for Python 3.1 if it's possible?

推荐答案

字符串不是字节.

这是 Python 3 中的一个简单定义.

This is a simple definition in Python 3.

字符串是 Unicode(不是字节)Unicode 字符串使用 "..." 或 '...'

Strings are Unicode (which are not bytes) Unicode strings use "..." or '...'

字节是字节(不是字符串)字节字符串使用 b"..." 或 b'...'.

Bytes are bytes (which are not strings) Byte strings use b"..." or b'...'.

使用 b"aeiou" 来创建由某些字母的 ASCII 码组成的字节序列.

Use b"aeiou" to create a byte sequence composed of the ASCII codes for certain letters.

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