import mygptool

class MyGPTool(object):
    def __init__(self):
        """Define the tool (tool name is the name of the class)."""
        self.label = "MyGPTool"
        self.description = "Does my stuff!"

    def getParameterInfo(self):
        """Define parameter definitions"""
        return [arcpy.Parameter(displayName="State (Abbreviation)"
                               ,name="state_abbreviation"
                               ,datatype="GPString"
                               ,parameterType="Required"
                               ,direction="Input"
                               )]

    # Boilerplate isLicensed, updateParameters, updateMessages methods

    def execute(self, parameters, messages):
        """The source code of the tool."""
        state_abbreviation = parameters[0].valueAsText
        mygptool.run_my_tool(state_abbreviation)
        return

arcpy.Parameter(displayName="My Database"
               ,name="smart_db"
               ,datatype="DEWorkspace"
               ,parameterType="Required"
               ,direction="Input"
               )