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

但是,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(参见下面的代码).请问有人向我解释一下吗？我太困惑了.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

更改from collections import OrderedDict到import collections.

Answer 2

选项 1： 更改

from collections import OrderedDict

到

import collections

选项2：

改变

collections.OrderedDict()

到

OrderedDict()

Answer 3

您还没有导入名称collections，而只是导入名称OrderedDict。因此，您只需使用bla = OrderedDict()而不是使用模块名称。