python代码如何实现切换中英文输入法

from win32con import WM_INPUTLANGCHANGEREQUEST
import win32gui
import win32api

def set_english_inputer():
    # 0x0409为英文输入法的lid_hex的 中文一般为0x0804
    hwnd = win32gui.GetForegroundWindow()
    title = win32gui.GetWindowText(hwnd)
    im_list = win32api.GetKeyboardLayoutList()
    im_list = list(map(hex, im_list))
    result = win32api.SendMessage(hwnd, WM_INPUTLANGCHANGEREQUEST, 0, 0x0409)
    if result == 0:
        print("英文输入法切换成功！")

# 转换为英文状态
def eng_chin():
    import pyautogui
    from win32clipboard import GetClipboardData, OpenClipboard, CloseClipboard
    from win32con import CF_TEXT
    from win32con import CF_UNICODETEXT
    import subprocess
    # 打开搜索框
    subprocess.run('start ms-settings:search', shell=True)
    # subprocess.Popen(['explorer', 'shell:::{2559a1f3-21d7-11d4-bdaf-00c04f60b9f0}'])
    pyautogui.press('`')
    pyautogui.hotkey('shift','1')
    pyautogui.hotkey('shift','4')
    pyautogui.hotkey('shift','5')
    pyautogui.hotkey('shift','6')
    pyautogui.hotkey('ctrl','a')
    pyautogui.hotkey('ctrl','c')
    OpenClipboard()  # 读取剪贴板的数据
    clipboard = GetClipboardData(CF_UNICODETEXT)
    CloseClipboard() #关闭
    pyautogui.press('backspace')
    text=clipboard
    if '·' in text and '！'in text and '￥'in text and '%'in text and '……'in text:
        print('当前输入法为中文状态')
        pyautogui.press('shift')  # 切换英文状态
        print('已切换英文状态')
        # 关闭搜索框
        subprocess.run('taskkill /F /IM SearchUI.exe', shell=True)
        return '中文'
    print('当前输入法为英文状态')
    # 关闭搜索框
    subprocess.run('taskkill /F /IM SearchUI.exe', shell=True)
    return  '英文'

eng_chin()

# 指定系统默认输入法，切换中文状态
def input_fa():
    import uiautomation as uia
    import pyautogui
    win = uia.PaneControl(ClassName="Shell_TrayWnd",Name="任务栏")
    retext=win.ButtonControl(ClassName="IMEModeButton").Name
    print(retext)
    if '中文' in retext.replace('\n',''):
        pyautogui.press('shift') #切换状态
    return retext
input_fa()