Import and convert module into qtdesign

Question

I would like to integrate the python modules (in the algo/ folder) into the main program that uses an interface_ui is created by QT designer.

This is my folder structure.

├── algo/
│   └── main_algo.py
│   └── a.py
│   └── b.py
│   └── read_data.py
│   └── data/
│       └── data.bin
└── main.py
        └── interface_ui.py

Note that the main_algo.py will import a.py, b.py, and read_data.py (function to read data.bin)

So, I have two solutions:

1. I have created a button in the interface and executed the function main_algo.py each time I push the button

   exec(open("path/main_algo.py.py").read())

2. I would convert all the modules inside the algo/ folder into the function and call back the function in the main.py whenever I want.

   import sys
   sys.path.insert(1,"path_to_algo/")
   from a import x,y
   from b import z
   import read_data
   

Please tell me the advantages of each solutions and how can we do the second solution.

Thank you very much