如何自动填充tkinter表格中的单元格Python

Question

我试图将这个代码片段合并到我的脚本中，并将计算添加到第7列中，但是，它似乎无法返回正确的倍数输入，任何想法为什么？下面是代码：

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，有一个变量转换成整型，那么它的工作：

 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

这里有一个修复，做你问什么。主要要注意的是，我添加了一个autofill方法，并绑定了Return密钥，它调用autofill方法。输入要填充的单元格后，您需要按Return/Enter键，您可以将其更改为您喜欢的任何其他事件。

只是为了让代码在当前状态下工作，还有其他更改。我没有对你的实现的有效性/优雅性做任何改变，我把它留给你。

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()