为什么保存MSWord文档会无声地失败？

I need to change some custom properties values in many files. Here is an example of code - how I do it for a single file:

我需要在许多文件中更改一些自定义属性值。以下是代码示例 - 我如何为单个文件执行此操作:

import win32com.client

MSWord = win32com.client.Dispatch("Word.Application")
MSWord.Visible = False

doc = MSWord.Documents.Open(file)
doc.CustomDocumentProperties('Some Property').Value = 'Some New Value'
doc.Save()
doc.Close()

MSWord.Quit()

Running the same code for "Excel.Application" (with minor changes - just to make it work) gives me excellent result. However when I'm using doc.Save() or doc.SaveAs(same_file) for MSWord it silently fails. I don't know why, but changes are not saved.

为“Excel.Application”运行相同的代码(稍作修改 - 只是为了使其工作)给了我很好的结果。但是,当我为MSWord使用doc.Save()或doc.SaveAs(same_file)时,它会默默地失败。我不知道为什么,但没有保存更改。

Now my workaround is to use SaveAs to a different file, it also works good. But I want to understand why I have such strange behaviour for MSWord files and how it can be fixed?

现在我的解决方法是将SaveAs用于另一个文件,它也很好用。但我想了解为什么我对MSWord文件有如此奇怪的行为以及如何修复它?

Edit: I changed my code, not to misdirect people with silent fail cause of try/except. However, thanks to all of them for finding that defect in my code :)

编辑:我改变了我的代码,而不是误导了人们因为尝试/除外的无声失败原因。但是,感谢他们所有人在我的代码中发现了这个缺陷:)

4 个解决方案

#1

You were using the CustomDocumentProperties in the wrong way, and as other people pointed out, you could not see it, because you were swallowing the exception.

您以错误的方式使用CustomDocumentProperties,正如其他人所指出的那样,您无法看到它,因为您正在吞下异常。

Moreover - and here I could not find anything in the documentation - the Saved property was not reset while changing properties, and for this reason the file was not changed.

此外 - 在这里我在文档中找不到任何内容 - 更改属性时未保存已保存的属性,因此文件未更改。

This is the correct code:

这是正确的代码:

msoPropertyTypeBoolean = 0
msoPropertyTypeDate = 1
msoPropertyTypeFloat = 2
msoPropertyTypeNumber = 3
msoPropertyTypeString = 4

import win32com.client

MSWord = win32com.client.Dispatch("Word.Application")
MSWord.Visible = False

doc = MSWord.Documents.Open(file)
csp = doc.CustomDocumentProperties
csp.Add('Some Property', False, msoPropertyTypeString, 'Some New Value')
doc.Saved = False
doc.Save()
doc.Close()

MSWord.Quit()

Note: there is no error handling, and it is definitely not of production quality, but it should be enough for you to implement your functionality.
Finally, I am guessing the values of the property types (and for the string type the guess is correct) but for the others there could be some issue.

注意:没有错误处理,它绝对不是生产质量,但它应该足以实现您的功能。最后,我猜测属性类型的值(并且对于字符串类型猜测是正确的),但对于其他类型,可能存在一些问题。

#2

you're saving file only if Value was successfully changed. May be you could try to remove try-except clause and see what is actually happening when you're file is not saved. And, btw, using bare except is not a good practice.

只有在Value成功更改后才能保存文件。也许你可以尝试删除try-except子句,看看当你没有保存文件时实际发生了什么。而且,顺便说一下,使用裸露的不是一个好习惯。

#3

(a) Check to see if you have file write access

(a)检查您是否具有文件写入权限

(b) Make sure you code catches using the COMException

(b)确保使用COMException编写捕获代码

(C) are you gracefully terminating excel/words when creating multiple documents

(C)你在创建多个文档时优雅地终止excel / words

Darknight

#4

It fails silently since you ignore errors (except: pass).

它会无声地失败,因为您忽略了错误(除了:传递)。

The most common reason why saving a Word file usually fails is that it's open in Word.

保存Word文件通常失败的最常见原因是它在Word中打开。

#1