如何自动填充 tkinter 表中的单元格 Python

Question

我试图将这部分合并到我的脚本中并将计算添加到第 7 列中，但是，它似乎无法返回正确的输入倍数，知道为什么吗？ 这是代码：

def autofill(self, event):
    row = int(event.widget.grid_info()['row'])
    auto_list = self.in_list(self.LookUpList, self._entry[row, 0].get())

    if auto_list is not None:

        self._entry[row,1].delete(0, 'end')
        self._entry[row,1].insert(0, auto_list[1])

        self._entry[row,2].delete(0, 'end')
        self._entry[row,2].insert(0, auto_list[2])

        self._entry[row,4].delete(0, 'end')
        self._entry[row,4].insert(0, auto_list[3])

        self._entry[row,6].delete(0,'end')
        if self._entry[row,3].get() != '':
            a = self._entry[row,3].get()
        else: a = 0
        b = int(self._entry[row,4].get())
        c = int(a * b)
        self._entry[row,6].insert(0, c)

我刚刚发现错误，不得不将一个变量转换为 int，然后它起作用了：

        self._entry[row,6].delete(0,'end')
        if self._entry[row,3].get() != '':
            a = int(self._entry[row,3].get())
        else: a = 0
        b = int(self._entry[row,4].get())
        c = int(a * b)
        self._entry[row,6].insert(0, c)

Answer 1

这是一个可以满足您要求的修复程序。 需要注意的主要事情是，我添加了一个autofill方法，并绑定到调用autofill方法的Return键。 您需要在键入要填充的单元格后按 Return/Enter 键，您可以将其更改为您喜欢的任何其他事件。

几乎没有其他更改只是为了使代码在当前状态下工作。 我没有对您的实施的效率/优雅程度进行任何更改，我将其留给您。

from tkinter import *

class SimpleTableInput(Frame):
    def __init__(self, parent, rows, columns):
        Frame.__init__(self, parent)

        self._entry = {}
        self.rows = rows
        self.columns = columns

        # register a command to use for validation
        vcmd = (self.register(self._validate), "%P")

        # create the table of widgets
        for row in range(self.rows):
            for column in range(self.columns):
                index = (row, column)
                if column == 3:
                    e = Entry(self, validate="key", validatecommand=vcmd)
                else:
                    e = Entry(self)
                e.grid(row=row, column=column, stick="nsew")
                self._entry[index] = e

        # adjust column weights so they all expand equally
        for column in range(self.columns):
            self.grid_columnconfigure(column, weight=1)



##      Lookup table:
        self.LookUpList=[
                ['a','Black skirt','PP','2000'],
                ['b','Pink T-shirt','PP','1000'],
                ['c','Yellow skirt','Marela','1500'],
                ['d','White trousers','PP','2000']]

        ## Bind the Return/Enter key to populate the entries
        for row in range(self.rows):
            self._entry[row, 0].bind("<Return>", self.autofill)

    def in_list(self, list_of_lists, item):
        if not list_of_lists:
            return None
        if item in list_of_lists[0]:
            return list_of_lists[0]
        return self.in_list(list_of_lists[1:], item)



    ## The method that will be called to populate the entries
    def autofill(self, event):
        row = int(event.widget.grid_info()['row'])
        auto_list = self.in_list(self.LookUpList, self._entry[row, 0].get())
        self._entry[row,1].delete(0, 'end')
        self._entry[row,1].insert(0, auto_list[1])


    def get(self):
        '''Return a list of lists, containing the data in the table'''
        result = []
        for row in range(self.rows):
            current_row = []
            for column in range(self.columns):
                index = (row, column)
                current_row.append(self._entry[index].get())
            result.append(current_row)
        return result

    def _validate(self, P):

        if P.strip() == "":
            return True

        try:
            f = float(P)
        except ValueError:
            self.bell()
            return False
        return True

class Example(Frame):
    def __init__(self, parent):
        Frame.__init__(self, parent)
        names = ["Cislo produktu",
                 "Popis produktu",
                 "Znacka",
                 "Mnozstvi",
                 "Jednotkova cena",
                 "Prodejna",
                 "Celkova cena"]
        frame = Frame(self)
        frame.pack(side="top", fill="both")
        for i, title in enumerate(names):
            l = Label(frame, text=title)
            l.grid(row=0, column=i)
            frame.grid_columnconfigure(i, weight=1)
        self.EmptySpace = Label(self)
        self.table = SimpleTableInput(self, 30, 7)
        self.table.pack(side="top", fill="both")
        self.EmptySpace.pack(side="top",fill="both")

##        frame1 = Frame(self)
##        frame1.pack(side="left",fill="both")
##        self.SubButton = Button(self, text="Ulozit a zavrit", command=self.on_ulozit)
##        self.StornoButton = Button(self, text="Stornovat nakup", command=self.on_storno)
##        self.SubButton.pack(side="left", fill="both", expand=True)
##        self.StornoButton.pack(side="left", fill="both", expand=True)

    def on_ulozit(self):

        data = self.table.get()
        data1 = [list(filter(None, lst)) for lst in data]
        data2 = list(filter(None, data1))
        for item in data2:
            item.append(datetime.now().strftime('%Y-%m-%d %H:%M:%S'))
##            look up property
        with open('C:\\Users\\chroustovskyj\\Desktop\\Dev_py\\App\\Data_Storage\\Data_Storage.csv', 'a', newline='') as csvfile:
            writer = csv.writer(csvfile)
            writer.writerows(data2)
        root.destroy()

    def on_storno(self):
        print("This is storno.")

if __name__ == '__main__':
    root = Tk()
    root.wm_title("Formular")
    w, h = root.winfo_screenwidth(), root.winfo_screenheight()
    root.geometry("%dx%d+0+0" % (w, h))
    Example(root).pack(side="top", fill="both", expand=False)      
    root.mainloop()