I've only started my project and already got a problem. File parser.py contains following code and nothing more:
class A:
    def __init__(self):
        self.x = 0
for file parser_tests.py I tried following combinations: 1)
import unittest
class ParserTests(unittest.TestCase):
    def one(self):
        from parser import A
        x = A()
        self.assertTrue(True)
2)
import unittest
from parser import A
class ParserTests(unittest.TestCase):
    def one(self):
        x = A()
        self.assertTrue(True)
3)
import unittest
import parser
class ParserTests(unittest.TestCase):
    def one(self):
        x = parser.A()
        self.assertTrue(True)
But all of them lead to AttributeError: 'module' object has no attribute 'A' or ImportError: cannot import name 'A'
How to fix this?
 
    