从派林修复R0401的周期性进口

Question

Pylint抱怨对于NLTK包的特定文件，循环导入的错误代码为R0401，例如

nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import), ] Cyclic import (nltk -> nltk.internals)
nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import), ] Cyclic import (nltk.corpus -> nltk.tokenize -> nltk.tokenize.punkt -> nltk.probability)
nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import), ] Cyclic import (nltk.corpus -> nltk.tokenize -> nltk.tokenize.texttiling)
nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import), ] Cyclic import (nltk.draw.tree -> nltk.tree)
nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import), ] Cyclic import (nltk.tree -> nltk.treeprettyprinter)
nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import), ] Cyclic import (nltk.grammar -> nltk.parse.pchart)
nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import), ] Cyclic import (nltk.stem -> nltk.stem.porter)
nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import), ] Cyclic import (nltk.classify.maxent -> nltk.classify.tadm)

完整列表在https://github.com/nltk/nltk/issues/2113

但看看进口商品：

^{pr2}$

但是看看nltk.internalshttps://github.com/nltk/nltk/blob/develop/nltk/internals.py，没有任何指向nltk.ccg.lexicon的循环导入：

from __future__ import print_function

import subprocess
import os
import fnmatch
import re
import warnings
import textwrap
import types
import sys
import stat
import locale

# Use the c version of ElementTree, which is faster, if possible:
try:
    from xml.etree import cElementTree as ElementTree
except ImportError:
    from xml.etree import ElementTree

from six import string_types

from nltk import __file__
from nltk import compat

消息R0401(cyclic-import)是什么意思？

看看nltk.ccg.lexicon.py和{}没有任何导入是循环的，那么如何解决这个问题呢。在

Answer 1

不知道为什么pylint在nltk/nltk/ccg/lexicon.py文件中报告这些，但是循环导入本身可以在错误消息的右侧看到。在

以第一个错误为例：Cyclic import (nltk -> nltk.internals)：根__init__.py有一个来自nltk.internals的导入，而{a2}有一个来自包根的导入，这显然是一个循环导入。在