获取错误TypeError：'module'对象没有属性'__getitem__'

Question

我正在尝试编写基于py.test的测试用例。我的test.py是

!flask/bin/python

import pytest
import config


@pytest.fixture
def app(request):

SQLALCHEMY_DATABASE_URI = 'postgresql://sanjeev:sanjeev@localhost:5432/app'

config[SQLALCHEMY_DATABASE_URI] 
db.create_all()
def fin():
    db.session.remove()
    db.drop_all()
request.addfinalizer(fin)

def test_foo(app):
    pass 

我的config.py文件看起来像

import os
from sqlalchemy.ext.declarative import declarative_base
Base = declarative_base()

basedir = os.path.abspath(os.path.dirname(__file__))
CSRF_ENABLED = True
SECRET_KEY = 'you-will-never-guess'

SQLALCHEMY_DATABASE_URI = 'postgresql://sanjeev:sanjeev@localhost:5432/app'
SQLALCHEMY_MIGRATE_REPO = os.path.join(basedir, 'db_repository')

但我收到错误TypeError：'module'对象没有属性' getitem '

下面是错误日志跟踪

                  ERROR at setup of test_foo
request = <SubRequest 'app' for <Function 'test_foo'>>

@pytest.fixture
def app(request):


    SQLALCHEMY_DATABASE_URI = 'postgresql://sanjeev:sanjeev@localhost:5432/app'
    config[SQLALCHEMY_DATABASE_URI]
    TypeError: 'module' object has no attribute '__getitem__'

test.py:20: TypeError

Answer 1

导入模块config。因此，您无法像列表一样访问它：

>>> import math
>>> math[0]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'module' object has no attribute '__getitem__'
>>> 

相反，如果你想从shell运行它，你可以使用sys.argv，或者将它作为函数传递：

<强> sys.argv ：

myfile.py：

import sys
print sys.argv[1:]

<强>运行：

bash-3.2$ python myfile.py Hello World!
['Hello', 'World!']
bash-3.2$ 

传入：

myfile.py：

def test(variable):
        print variable

<强>运行：

>>> import myfile
>>> myfile[56]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'module' object has no attribute '__getitem__'
>>> myfile.test(56)
56
>>> 

编辑：

您的更新文件 test.py：

!flask/bin/python

import pytest
import config


@pytest.fixture
def app(request):

SQLALCHEMY_DATABASE_URI = 'postgresql://sanjeev:sanjeev@localhost:5432/app'

config.take(SQLALCHEMY_DATABASE_URI)
db.create_all()
def fin():
    db.session.remove()
    db.drop_all()
request.addfinalizer(fin)

def test_foo(app):
    pass 

<强> config.py

import os
from sqlalchemy.ext.declarative import declarative_base

global myvar

def take(variable):
    global myvar
    myvar = variable

print myvar #Just a test to see if it works

Base = declarative_base()

basedir = os.path.abspath(os.path.dirname(__file__))
CSRF_ENABLED = True
SECRET_KEY = 'you-will-never-guess'

SQLALCHEMY_DATABASE_URI = 'postgresql://sanjeev:sanjeev@localhost:5432/app'
SQLALCHEMY_MIGRATE_REPO = os.path.join(basedir, 'db_repository')

测试上述内容：

我的虚拟文件config.py：

global myvar

def take(variable):
        global myvar
        myvar = variable

def show():
        global myvar
        print myvar

我的虚拟文件test.py：

import config
variable = [6, 7, 8]

config.take(variable)
config.show()

正在运行： 这应打印[6, 7, 8]

bash-3.2$ python test.py
[6, 7, 8]
bash-3.2$