Python 3: importing module names consisting of similar components. AttributeError

Question

I have the following folder structure:

├── aaa
│  ├── __init__.py
│  ├── ttt
│  │  ├── aaa.py
│  │  └── __init__.py
│  └── ttt.py
├── __init__.py
├── t.py
└── ttt.py

The main script t.py:

import sys
sys.path = ['.']
import ttt
import aaa.ttt
import aaa.ttt.aaa
print(ttt.get_name())
print(aaa.ttt.get_name2())
print(aaa.ttt.aaa.get_name3())

The imported scripts:

./ttt.py

def get_name():
 return "ttt"

./aaa/ttt.py

def get_name2():
 return "aaa/ttt"

./aaa/ttt/aaa/ttt.py

def get_name3():
 return "aaa/ttt/aaa"

Now running the main script:

$ python -B t.py 
ttt
Traceback (most recent call last):
 File "t.py", line 10, in <module>
 print(aaa.ttt.get_name2())
AttributeError: module 'aaa.ttt' has no attribute 'get_name2'

What is the problem here? I am using Python 3.6.1.

Edit

As commented by @AChampion, a problem is that I have aaa/ttt.py and aaa/ttt/__init__.py. However, if I remove the latter I get a ModuleNotFoundError on import aaa.ttt.aaa:

$ python -B t.py 
Traceback (most recent call last):
 File "t.py", line 7, in <module>
 import aaa.ttt.aaa
ModuleNotFoundError: No module named 'aaa.ttt.aaa'; 'aaa.ttt' is not a package

Does this mean that if you have a package aaa.bbb in Python, then you cannot have any modules in package aaa named bbb? This smells bad design, so I guess I must be missing something here?

• AChampion: import aaa.ttt is ambiguous, does this mean aaa/ttt/__init__.py or aaa/ttt.py, the former is tried first. So aaa/ttt.py is never imported.
• Håkon Hægland: @AChampion Yes that seems like the case, but I am not allowed to remove the aaa/ttt/__init__.py. Then I get a ModuleNotFoundError for import aaa.ttt.aaa. See my updated question.
• AChampion: Correct aaa.ttt is not a module without __init__.py, see this answer: stackoverflow.com/questions/4092395/…