擅长:python、mysql、java
<p>如果您只需要一个唯一标识符,<a href="https://docs.python.org/2/library/functions.html#id" rel="nofollow">built-in Python ^{<cd1>} function</a>就可以:</p>
<blockquote>
<p>Return the “identity” of an object. This is an integer (or long integer) which is guaranteed to be unique and constant for this object during its lifetime. Two objects with non-overlapping lifetimes may have the same id() value.</p>
</blockquote>