Question

python可以运行的代码但是放在一个类里面就会闪退

import wx
import wx.xrc
import cv2
import numpy as np

class MyFrame1 ( wx.Frame ):

def __init__( self, parent ):
wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = wx.EmptyString, pos = wx.DefaultPosition, size = wx.Size( 500,300 ), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL )

self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )

bSizer2 = wx.BoxSizer( wx.VERTICAL )

self.xianshi = wx.Button( self, wx.ID_ANY, u"show", wx.Point( 1,-1 ), wx.DefaultSize, 0 )
bSizer2.Add( self.xianshi, 0, wx.ALL|wx.ALIGN_CENTER_HORIZONTAL, 5 )

self.SetSizer( bSizer2 )
self.Layout()

self.Centre( wx.BOTH )

# Connect Events
self.xianshi.Bind( wx.EVT_BUTTON, self.main_button_click )

def __del__( self ):
pass

# Virtual event handlers, overide them in your derived class
def main_button_click( self, event ):
video = Video()
video.show()

class Video:
def show( self ):
cap = cv2.VideoCapture(0)
while(1):
ret, frame = cap.read()
cv2.imshow("capture", frame)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
cap.release()
cv2.destroyAllWindows()

if __name__=='__main__':
app=wx.App()
frame=MyFrame1(None)
frame.Show(True)
app.MainLoop()
显示摄像头的代码放在单独放出来运行没有问题，但是如果加上界面的话，就会出错。完整代码已经贴上。

Answer 1

重启cmd就行了.
其实你安装的时候选择增加path到系统就是了,自动帮你设置好.
希望能帮到你！