即使我导入了集合，也没有定义 python 全局名称 'collections'

Question

以下是config.py:

from collections import OrderedDict
def test_config(fileName):
    tp_dict = collections.OrderedDict()
    with open("../../config/" + fileName, 'r') as myfile:
        file_str = myfile.read().replace(' ', '').split('\n')
    tp_list = []
    for i, x in enumerate(file_str):
        x = x.strip()
        try:
            key = x[:x.index(':')].strip()
            value = x[x.index(':')+1:]
            if key == 'testpoint':
                pass
            else:
                tp_dict[key] = value.strip().split(',')
        except ValueError,e:
            pass
        if i % 4 == 0 and i != 0:
            tp_list.append(tp_dict.copy())   
    return tp_list

我正在另一个文件 test.py 中使用该函数:

import config
a = config.test_config('test.txt')

NameError: global name 'collections' is not defined

但如果我将整个代码从 config.py 复制粘贴到 test.py 的顶部，然后使用该函数，那么我没有错误(请参见下面的代码)。有人可以向我解释一下吗？我很困惑。非常感谢你!

"""
This is test.py
"""
from collections import OrderedDict
def test_config(fileName):
    tp_dict = collections.OrderedDict()
    with open("../../config/" + fileName, 'r') as myfile:
        file_str = myfile.read().replace(' ', '').split('\n')
    tp_list = []
    for i, x in enumerate(file_str):
        x = x.strip()
        try:
            key = x[:x.index(':')].strip()
            value = x[x.index(':')+1:]
            if key == 'testpoint':
                pass
            else:
                tp_dict[key] = value.strip().split(',')
        except ValueError,e:
            pass
        if i % 4 == 0 and i != 0:
            tp_list.append(tp_dict.copy())   
    return tp_list
a = test_config('test.txt')

Answer 1

将 from collections import OrderedDict 更改为 import collections。