Question

我想在paintEvent（）中使用for循环调用多个模块，比如

 def fun1(self,paint,a,b):
     do something ...
 def fun2(self,paint,a,b):
     do something ...
 def fun3(self,paint,a,b):
     do something .... 

 def paintEvent(self,event=None):
     for i in range (1,3):
        self.fun[i](self,paint,a,b)

基本上我的fun1，fun2和fun3正在绘制一些小部件并且几乎相同。请帮我看看如何使用for循环调用这些函数。

Answer 1

您可以执行以下操作：

def fun1(self,paint,a,b):
    do something ...
def fun2(self,paint,a,b):
    do something ...
def fun3(self,paint,a,b):
    do something .... 

self.fun = [self.fun1,self.fun2,self.fun3]

def paintEvent(self,event=None):
    for i in range (1,3):
       self.fun[i](self,paint,a,b)

如果fun1，fun2和fun3几乎与你所说的相同，你应该考虑将它们组合成一个你可以使用附加参数调用的函数。

Answer 2

你可以做点什么：

def fun1(self, paint, a, b):
    pass

def fun2(self, paint, a, b):
    pass

def fun3(self,paint, a, b):
    do something .... 


def paintEvent(self, event=None):
    functions = [self.fun1, self.fun2, self.fun3]
    for func in functions:
        func(paint, a, b)

或者如果你确定函数名称，就像它们有类似的命名模式一样，即使这样也可行：

def paintEvent(self, event=None):
    for attr_name in dir(self):
        if attr_name.startswith('fun'):
            func = getattr(self, attr_name)
            func(paint, a, b)

python pyqt：如何使用for循环调用多个模块？

2 个答案: