处理另存为和保存按钮的功能不起作用答案

【问题标题】：Functions handling save as and save buttons are not working处理另存为和保存按钮的功能不起作用
【发布时间】：2019-12-03 18:25:56
【问题描述】：

我正在尝试构建一个记事本，但我的保存和另存为按钮有问题，因为 TextField 中的内容不保存，文本文档总是返回空，这是我的代码：

def saveFile():
    global infile
    global in_path
    global txt
    try:
        if in_path == '':
    #save as new file
            in_path = asksaveasfile(initialfile='Untitled.txt', defaultextension='txt',filetypes=[("All Files","*.*"),("Text Documents","*txt")])
            if in_path == "":
                in_path = None
            else:
                #try to save file
                with open(in_path, "w") as infile:
                   data = (txt.get(1.0, END))
                   infile.write(data)

                    #change the window title
                root.title(os.path.basename(in_path))
        else:
            #try to save file
            with open(in_path, "w") as infile:
                infile.write(txt.get(1.0, END))
                #change the window title
                root.title(os.path.basename(in_path))
    except:
        pass        
def saveAs():
    global infile
    global in_path
    global txt
    try:
    #save as new file
        in_path = asksaveasfile(initialfile='Untitled.txt', defaultextension='txt',filetypes=[("All Files","*.*"),("Text Documents","*txt")])
        if in_path == " ":
            in_path = None
        else:
                #try to save file
            with open(in_path, "w") as infile:
                infile.write(txt.get(1.0, END))
                #change the window title
            root.title(os.path.basename(in_path))
    except:
            pass

【问题讨论】：

我推荐这篇非常有用的文章：ericlippert.com/2014/03/05/how-to-debug-small-programs。
使用print() 来查看代码的哪一部分被执行以及变量中有什么值。它被称为“打印调试”。或者学习如何使用真正的调试器。
在控制台/终端中运行它时不会收到错误消息吗？ asksaveasfile 不提供文件名，而是提供打开文件的处理程序。要获取文件名，您需要asksaveasfilename 而不是asksaveasfile。使用print(in_path) 看看你会得到什么。

标签： python file tkinter file-handling

【解决方案1】：

定义保存文件（）：全局路径全局txt

if in_path == '':
#save as new file
    in_path = asksaveasfilename(initialfile='Untitled.txt', defaultextension='.txt',filetypes=[("All Files","*.*"),("Text Documents","*.txt")])
    if in_path == "":
        in_path = None
    else:
        try:
            #try to save file
            with open(in_path, "w") as infile:
               infile.write(txt.get(1.0, END))


                #change the window title
            root.title(os.path.basename(in_path))
        except:
            pass
else:
        #try to save file
    with open(in_path, "w") as infile:
        infile.write(txt.get(1.0, END))
            #change the window title
            #infile.close()
        root.title(os.path.basename(in_path))

def saveAs(): 全局路径全局 txt 尝试： #另存为新文件 in_path = asksaveasfilename(initialfile='Untitled.txt', defaultextension='.txt',filetypes=[("All Files","."),("Text Documents","*.txt ")]) 如果 in_path == " ": in_path = 无别的： #尝试保存文件使用 open(in_path, "w") 作为 infile： infile.write(txt.get(1.0, END)) #改变窗口标题 root.title(os.path.basename(in_path)) 除了：通过

【讨论】：