<p>您可以使用<a href="http://docs.python.org/library/tokenize.html#tokenize.generate_tokens" rel="nofollow">tokenize.generate_tokens</a>收集有关令牌名称出现顺序的数据。你知道吗</p>
<p>例如,如果将此文件另存为<code>/tmp/test.py</code>并运行
<code>python /tmp/test.py</code>,它将读取自己的代码并报告全局变量的显示顺序:</p>
<pre><code>import tokenize
import io
import token
import collections
import itertools
class Token(collections.namedtuple('Token', 'toknum tokval start end line')):
@property
def tokname(self):
return token.tok_name[self.toknum]
ImFirst = 1
ImSecond = 2
AndImThird = "three"
if ImSecond:
ImFourth = 4.0
seen = set()
order = []
with open('/tmp/test.py', 'r') as f:
for tok in itertools.starmap(Token, tokenize.generate_tokens(f.readline)):
if tok.tokname == 'NAME' and tok.tokval not in seen:
seen.add(tok.tokval)
order.append(tok.tokval)
order = [name for name in order if name in globals()]
print(order)
</code></pre>
<p>收益率</p>
<pre><code>['tokenize', 'io', 'token', 'collections', 'itertools', 'Token', 'ImFirst', 'ImSecond', 'AndImThird', 'ImFourth', 'seen', 'order', 'f', 'tok', 'name']
</code></pre>