Source code for base

class Foundation:
    """
    This class contains common features of all modules.
    """

    def __init__(self):
        pass

    def DetSymEnv(self):
        """
        Returns a list. The list consists of all symbolic tools
        present among 'sympy','sage' and 'symengine'.
        """
        Env = []
        from sys import modules
        if 'sympy' in modules:
            Env.append('sympy')
        if 'sage' in modules:
            Env.append('sage')
        if 'symengine' in modules:
            Env.append('symengine')
        return Env

    def CommonSymFuncs(self, env):
        if env == 'sympy':
            from sympy import expand, sqrt, sin, cos, pi, diff
            from sympy import Symbol as Symbol
            # from sympy import Function as SymFunc
        elif env == 'sage':
            from sage.all import expand, sqrt, sin, cos, pi, diff
            from sympy import var as Symbol
            # from sympy import function as SymFunc
        elif env == 'symengine':
            from symengine import expand, sqrt, sin, cos, pi, diff
            from sympy import Symbol as Symbol
            # from sympy import function_symbol as SymFunc

        self.expand = expand
        self.sqrt = sqrt
        self.sin = sin
        self.cos = cos
        self.pi = pi
        self.diff = diff
        self.Symbol = Symbol