Python在某个if循环之后重复cod的某个部分

Question

我正在为一个CFD可视化程序编写一个脚本，它与python有接口。 我创建了一个通用对话框，用户可以在其中输入一些值。现在，如果输入为false（这意味着一个变量大于另一个变量），我想重复该对话框：

items = []
items.append(['text',ITEM_TEXT,"Automatically save the evaluation in data file(s)\n",""])
items.append(['text',ITEM_TEXT,"Determine the range of timesteps that you want to save:",""])
items.append(['step_begin',ITEM_INT,"Start timestep:","Start timestep",first_step,first_step,timesteps])
items.append(['step_end',ITEM_INT,"End timestep:","End timestep",timesteps,first_step,timesteps])
a = CeiQtGenericDialog(items,None,"Save evaluation","Ok","Cancel")
ret = a.doit()

if (ret > 0):
    for i in a.getValues():
        if (i=='step_begin'):
            begin = a.getValue(i)
        if (i=='step_end'):
            end = a.getValue(i)

    if (begin > end):
        items2 = []
        items2.append(['text',ITEM_TEXT,"Start timestep must be smaller than end timestep!!",""])
        a = CeiQtGenericDialog(items2,None,"Error","Ok","Cancel")
        ret = a.doit()

        if (ret > 0):
            ????

在a.getValues()中，前面存储了泛型对话框的值。现在在最后，如果我想跳回到以前的通用对话框。换句话说，我想重复从某一行开始的代码，这样用户就可以在通用对话框中重复输入“step_begin”和“step_end”，这怎么可能？在

编辑/ 如果用户在通用对话框中单击“确定”，则ret将获得值1；如果用户单击“取消”，则ret将获得值0

Answer 1

我认为你应该把这一部分重复一遍，而你却没有得到预期的结果

while True:
    a = CeiQtGenericDialog(items,None,"Save evaluation","Ok","Cancel")
    ret = a.doit()

    if (ret < 0): 
        break # if cancel dialog will not proceed data analysis
    for i in a.getValues():
        if (i=='step_begin'):
            begin = a.getValue(i)
        if (i=='step_end'):
            end = a.getValue(i)

    if (begin < end):
        break # if everything is ok move out 
    items2 = []
    items2.append(['text',ITEM_TEXT,"Start timestep must be smaller than end timestep!!",""])
    a = CeiQtGenericDialog(items2,None,"Error","Ok","Cancel")
    ret = a.doit()
        if ret < 0:
           break # if cancel dialog will not proceed data analysis