从Appium 2.0版本开始，TouchAction类已被弃用。您可以使用新的ActionChains类来代替TouchAction类。要执行press()和long_press()操作，您可以使用ActionChains类的press()和long_press()方法。

以下是示例代码：

from appium import webdriver
from selenium.webdriver.common.action_chains import ActionChains

desired_caps = {
  "platformName": "Android",
  "appPackage": "com.android.settings",
  "appActivity": ".Settings"
}

# Start the app
driver = webdriver.Remote("http://localhost:4723/wd/hub", desired_caps)

# Locate an element to perform actions on
element = driver.find_element_by_xpath("//android.widget.TextView[@text='Display']")

# Create an ActionChains object
action_chains = ActionChains(driver)

# Perform press() action
action_chains.press(element).perform()

# Perform long_press() action
action_chains.long_press(element).perform()

# Close the app
driver.quit()