Question

我用Python编程，但我想用tkinter制作我的文本编辑器

所以我看了一个教程，但它没有用。这是代码

from  tkinter import *
from tkinter import filedialog

filename = None

def newFile():
    global filename
    filename = "Untitled"
    text.delete(0.0, END)

def saveFile():
    global filename
    t = text.get(0.0, END)
    f = open(filename, 'w')
    f.write(t)
    f.close()

def saveAs():
    f = asksaveasfile(mode='w', defaultextension='.txt')
    t = text.get(0.0, END)
    try:
        f.write(t.rstrip())
    except:
        showerror(title="Oops!", message="Error had been finded. Please try                 it again")

    def openFile():
        f = askopenfile(mode='f')
        t = f.read
        text.delete(0.0, END)
        text.insert(0.0, t)

root = Tk()
root.title("STE v.alpha")
root.minsize(width=400, height=400)
root.maxsize(width=400, height=400)

text = Text(root, width=400, height=400)
text.pack()

menubar = Menu(root)
filemenu = Menu(menubar)
filename.add_command(label="New", add_comand=newFile)
filename.add_command(label="Open", add_comand=openFile)
filename.add_command(label="Save As...", add_comand=saveAs)
filemenu.addsperator()
filemenu.add_command(label="Quit", command=root.quit)
menubar.add_cascade(filemenu)

root.config(menu=menubar)
root.mainloop()

但错误是

Traceback (most recent call last):
  File "C:/Users/superjoy/Desktop/programming/print/memojang.py", line 42, in     <module>
    filename.add_command(label="New", add_comand=newFile)
AttributeError: 'NoneType' object has no attribute 'add_command'

我该如何解决这个问题？ add_command也改变了什么？

Answer 1

您正在创建filemenu：

filemenu = Menu(menubar)

然后在您发布的代码顶部使用设置为filename的{{1}}，这就是为什么它被报告为None类型的原因：

NoneType

尝试将这些filename.add_command(label="New", add_comand=newFile) filename.add_command(label="Open", add_comand=openFile)条目重命名为filename。

从文档中，filemenu也没有采用名为add_command的参数，但确实需要一个名为add_comand

的参数

Answer 2

太多错别字＆amp;错误。我设法以某种方式修复它们......

1c1
< from  tkinter import *
---
> from tkinter import *
2a3
> from tkinter.filedialog import asksaveasfile, askopenfile
5a7
> 
10a13
> 
17a21
> 
24c28,29
<         showerror(title="Oops!", message="Error had been finded. Please try                 it again")
---
>         showerror(title="Oops!", message="Error had been finded. Please try "
>                   "it again")
26,30c31,36
<     def openFile():
<         f = askopenfile(mode='f')
<         t = f.read
<         text.delete(0.0, END)
<         text.insert(0.0, t)
---
> 
> def openFile():
>     f = askopenfile(mode='f')
>     t = f.read
>     text.delete(0.0, END)
>     text.insert(0.0, t)
42,45c48,51
< filename.add_command(label="New", add_comand=newFile)
< filename.add_command(label="Open", add_comand=openFile)
< filename.add_command(label="Save As...", add_comand=saveAs)
< filemenu.addsperator()
---
> filemenu.add_command(label="New", command=newFile)
> filemenu.add_command(label="Open", command=openFile)
> filemenu.add_command(label="Save As...", command=saveAs)
> filemenu.add_separator()
47c53
< menubar.add_cascade(filemenu)
---
> menubar.add_cascade(label="File", menu=filemenu)

python3 add_command不起作用

2 个答案: