Import function from other file

Assuming we have a file named my_module.py that contains a function named my_function:

# File: my_module.py

def my_function():
    print("Hello from my_function!")

We can import this function into another file using the import statement. Here's an example:

# File: main.py

from my_module import my_function

# Call imported function
my_function()  # Output: Hello from my_function!

Import function from sub directory

```python
import sys
sys.path.append('./Basics/')
from Basics import calculator
calculator.demo(name="hado")

```

Import function from other directory

```python
import sys
sys.path.append('./Basics')
import calculator

calculator.giai_phuong_trinh_bac_2(1,1,1)
```