Python Pit summary Possible causes of keyboard failure after calling keyboard events

When practicing Python to encapsulate keyboard events, implement a KeyDown and KeyUp function:

@staticmethod
def keyDown (keyName):
#按下按键
Win32api.keybd_event (keyboardkeys.vk_code[keyname],0,0,0)

@staticmethod
def keyUp (keyName):
#释放按键
Win32api.keybd_event (Keyboardkeys.vk_code[keyname],0,win32con. keyeventf_keyup,0)

@staticmethod
def twokeys (Key1,key2): #对前面函数的调用
#模拟两个组合键
Keyboardkeys.keydown (Key1)
Keyboardkeys.keydown (Key2)
Keyboardkeys.keyup (Key2)
Keyboardkeys.keyup (Key1)

After executing the TWOKEYW (' Ctrl ', ' V '), the paste is OK, but after the implementation of the keyboard is not good, the function of the keys are confused, or is not responding.

Later found because the code in the KeyUp () function has a problem, resulting in the execution of KeyUp () did not execute the success, the result is to press the key down, but did not give him to play, so the keyboard is not good use

Python Pit summary Possible causes of keyboard failure after calling keyboard events