# Extract peptide analysis methods into Scales class
class Scales:
    @staticmethod
    def peptide_charge(peptide: str, pH: float = 2.0) -> float:
        # Move existing peptide_charge method here
        pass
        
    @staticmethod
    def peptide_gravy(peptide: str, modifications: dict = None) -> float:
        # Move existing peptide_gravy method here
        pass
        
    @staticmethod
    def peptide_inspector(peptide: str, percentage: bool = False) -> dict:
        # Move existing peptide_inspector method here
        pass 