def findElement(self,element):
    '''
    Find element

    element is a set with format (identifier type, value), e.g. ('id','username')

    Usage:
    self.findElement(element)
    '''
    try:
        type = element[0]
        value = element[1]
        if type == "id" or type == "ID" or type=="Id":
            elem = self.driver.find_element_by_id(value)

        elif type == "name" or type == "NAME" or type=="Name":
            elem = self.driver.find_element_by_name(value)

        elif type == "class" or type == "CLASS" or type=="Class":
            elem = self.driver.find_element_by_class_name(value)

        elif type == "link_text" or type == "LINK_TEXT" or type=="Link_text":
            elem = self.driver.find_element_by_link_text(value)

        elif type == "xpath" or type == "XPATH" or type=="Xpath":
            elem = self.driver.find_element_by_xpath(value)

        elif type == "css" or type == "CSS" or type=="Css":
            elem = self.driver.find_element_by_css_selector(value)
        else:
            raise NameError("Please correct the type in function parameter")
    except Exception:
        raise ValueError("No such element found"+ str(element))
    return elem

class GoogleMainPage(BasePage):
"""description of class"""
searchbox = ('ID','lst-ib')

def __init__(self, browser = 'chrome'):
    super().__init__(browser)
    
def inputSearchContent(self,searchContent):
    searchBox = self.findElement(self.searchbox)
    self.type(searchBox,searchContent)
    self.enter(searchBox)