python做一个记事本_python如何自制一个简易记事本？
如何使用Tkinter在Python中创建一个简单的记事本呢。这个记事本GUI将包含各种菜单，如文件和编辑，使用它们可以完成保存文件，打开文件，编辑，剪切和粘贴等所有功能。使用此代码，我们将在记事本的窗口中添加菜单，并将添加复制，粘贴，保存等内容。
def __quitApplication(self):
self.__root.destroy()
# exit()
def __showAbout(self):
showinfo("Notepad", "Mrinal Verma")
def __openFile(self):
self.__file = askopenfilename(defaultextension=".txt",
filetypes=[("All Files","*.*"),
("Text Documents","*.txt")])
if self.__file == "":
# no file to open
self.__file = None
else:
# try to open the file
# set the window title
self.__root.title(os.path.basename(self.__file) + " - Notepad")
self.__thisTextArea.delete(1.0,END)
file = open(self.__file,"r")
self.__thisTextArea.insert(1.0,file.read())
file.close()
def __newFile(self):
self.__root.title("Untitled - Notepad")
self.__file = None
self.__thisTextArea.delete(1.0,END)
def __saveFile(self):
if self.__file == None:
#save as new file
self.__file = asksaveasfilename(initialfile='Untitled.txt',
defaultextension=".txt",
filetypes=[("All Files","*.*"),
("Text Documents","*.txt")])
if self.__file == "":
self.__file = None
else:
# try to save the file
file = open(self.__file,"w")
file.write(self.__thisTextArea.get(1.0,END))
file.close()
# change the window title
self.__root.title(os.path.basename(self.__file) + " - Notepad")
else:
file = open(self.__file,"w")
file.write(self.__thisTextArea.get(1.0,END))
file.close()
def __cut(self):
self.__thisTextArea.event_generate("<>")
def __copy(self):
self.__thisTextArea.event_generate("<>")
def __paste(self):
self.__thisTextArea.event_generate("<>")