Python：访问传递给`Pool.map（function（），iterable）`的iterable索引

Question

我的代码看起来像这样：

    def downloadImages(self, path):
        for link in self.images: #self.images=list of links opened via requests & written to file
           if stuff in link:
                #parse link a certain way to get `name`
           else:
                #parse link a different way to get `name`
           r = requests.get(link)
           with open(path+name,'wb') as f:
               f.write(r.content)

pool = Pool(2)
scraper.prepPage(url)
scraper.downloadImages('path/to/directory')

我想更改downloadImages以并行化该功能。这是我的尝试：

    def downloadImage(self, path, index of self.images currently being processed):
       if stuff in link: #because of multiprocessing, there's no longer a loop providing a reference to each index...the index is necessary to parse and complete the function.
            #parse link a certain way to get `name`
       else:
           #parse link a different way to get `name`
       r = requests.get(link)
       with open(path+name,'wb') as f:
           f.write(r.content)

pool = Pool(2)
scraper.prepPage(url)
pool.map(scraper.downloadImages('path/to/directory', ***some way to grab index of self.images****), self.images)

如何引用当前正在处理传递到pool.map()的迭代的索引？

我对多处理和新功能完全陌生。无法在文档中找到我要找的内容......我也无法通过google或stackoverflow找到类似的问题。