__init__.py

import sympy
from IPython.display import Math
from IPython.display import display
import copy
from .algebra import BasicAlgebraicCalculationClass, ErrorPropagationClass, OpticsAlignmentData, OpticsCalculationClass
 
__all__ = [
    'sympy',
    'Math',
    'display',
    'copy',  
    'BasicAlgebraicCalculationClass', 
    'ErrorPropagationClass',
    'OpticsAlignmentData',
    'OpticsCalculationClass'
]