driver.switch_to.frame(driver.find_element(By.CSS_SELECTOR,'iframe'))      #跳轉到iframe  
time.sleep(5)

InputButton = driver.find_element(By.LINK_TEXT,'GO')    #在iframe中定位到元素
driver.execute_script('arguments[0].click();',InputButton)    #點擊元素
time.sleep(5)