要删除vcard联系人重复项，比较.vcf文件中两个vcard是否相等不能通过简单== vobject比较进行工作 [英] To remove vcard contact duplicates, comparing if two vcards are equal in .vcf file does not work with simple == vobject comparison

问题描述

    #!/usr/bin/env python2.7 

    import vobject

    abfile='/foo/bar/directory/file.vcf' #ab stands for address book  

    ablist = []

    with open(abfile) as source_file:
        for vcard in vobject.readComponents(source_file):
          ablist.append(vcard)         

    print ablist[0]==ablist[1]

上面的代码应该返回True，但这不是因为vcard即使相同也被认为是不同的.最终目标之一是找到一种从vcard文件中删除重复项的方法.优点:有没有一种方法可以使比较与使用以下一种快速方法来使Python列表唯一化的方式兼容:

The above code should return True but it does not because the vcards are considered different even though they are the same. One of the ultimate objectives is to find a way to remove duplicates from the vcard file. Bonus points: Is there a way to make the comparison compatible with using one of the fast ways to uniqify a list in Python such as:

    set(ablist) 

要删除重复项? (例如，以某种方式将vcard转换为字符串...).在上面的代码中，len(set(ablist))返回2而不是预期的1.

to remove duplicates? (e.g. convert the vcards to strings somehow...). In the code above len(set(ablist)) returns 2 and not 1 as expected...

相反，如果不是比较整个vcard，而是比较它的一个组成部分，如下所示:

In contrast, if instead of comparing the whole vcard we compare one component of it as in:

    print ablist[0].fn==ablist[1].fn

然后，我们确实会看到预期的行为并收到True作为响应...

then we do see the expected behavior and receive True as response...

这是测试中使用的文件内容(只有两个相同的vcard):

Here is the file contents used in the test (with only two identical vcards):

    BEGIN:VCARD
    VERSION:3.0
    FN:Foo_bar1
    N:;Foo_bar1;;;
    EMAIL;TYPE=INTERNET:[e-mail]
    END:VCARD
    BEGIN:VCARD
    VERSION:3.0
    FN:Foo_bar1
    N:;Foo_bar1;;;
    EMAIL;TYPE=INTERNET:[e-mail]
    END:VCARD

推荐答案

@Brian Barcelona，关于您的答案，只是为了让您知道，而不是:

@Brian Barcelona, concerning your answer, just to let you know, instead of:

ablist = []

with open(abfile) as source_file:
    for vcard in vobject.readComponents(source_file):
      ablist.append(vcard)

您可以这样做:

with open(abfile) as source_file:
    ablist = list(vobject.readComponents(source_file))

顺便说一句，我已经查看了该模块的源代码，由于vcard的不同组件可能相同但顺序不同，因此不能保证您的解决方案能正常工作.我认为最好的方法是让您自己检查每个相关组件.

By the way, I have looked in the source code of this module and your solution is not guaranteed to work because different components of a vcard could be the same but not in the same order. I think the best way is for you to check each relevant component yourself.

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