对导入python模块运行时感到困惑

Question

Dear all am trying to import a python module (from admincases import admincases) in runtime and facing issues on that.requesting your guidance on the same.

import os
import threading
import sys
import Queue
import unittest
import time
import logging
from functions import functions
from functions import db_connect
from one import ParametrizedTestCase
#from admincases import admincases
import MySQLdb as mdb

class inittest(unittest.TestCase):

    fun = functions()
    db = db_connect()
    cur = db.db_conn()
    cur.execute ("SELECT * FROM testcase")
    testcases = cur.fetchall ()
    for testcase in testcases:
        print "%s, %s" % (testcase[0], testcase[1])
        import_string = "from " + testcase[1] + " import " + testcase[1]
        print import_string
        exec import_string
        case = str_to_class(testcase[1])
        print case
        print "Number of rows returned: %d" % cur.rowcount
    suite = unittest.TestSuite()
    suite.addTest(ParametrizedTestCase.parametrize(case, param=EppQueue,queue1=CrQueue))
    unittest.TextTestRunner(verbosity=2).run(suite)
    raw_input("keyy")

when this code is executed i get the below error:

 return getattr(sys.modules[__name__], str)
AttributeError: 'module' object has no attribute 'admincases'

dont know what is the mistake

Regards Venkat.S

Answer 1

As samy.vilar hinted to, it looks like you should make sure that the admincases module has an admincases variable. In fact, your code does from admincases import admincases .

My guess is that if you make from admincases import admincases work, then your code should work.

Answer 2

i achieved it via using below method:

test_mod = __import__(testcase[1], fromlist=[])
test_class =  getattr(test_mod, testcase[1])