试图找到唯一的子数组和子元素？

Question

我有一个数组将子数组包含 [page_name, url, and id] 在dirty_pages。 该数组包含重复的子数组。

我需要将dirty_pages 中的每个subarray dirty_pages解析为clean_pages ，这样：

1. 没有重复项（重复子数组）

2. 子数组中的1st index ，即 url 必须是唯一的！ 例如这个 url 应该算一个（ url/#review仍然是相同的 url） ：

    file:///home/joe/Desktop/my-projects/FashionShop/product.html#review

   和

   file:///home/joe/Desktop/my-projects/FashionShop/product.html

我当前的尝试返回带有 6 个子数组（重复！）的clean_pages ，而正确答案应该是 4

# clean pages
clean_pages = []


# dirty pages
dirty_pages = [
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/index.html', '1608093980462.042'],
  ['Put a Sock in It Heel Boot | Nasty Gal', 'file:///home/joe/Desktop/my-projects/FashionShop/nastygal-product.html', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/index.html', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/index.html', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/product.html', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/product.html#review', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/product.html#review', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/index.html', '1608093980462.042'],
  ['Put a Sock in It Heel Boot | Nasty Gal', 'file:///home/joe/Desktop/my-projects/FashionShop/nastygal-product.html', '1608093980462.042'],
  ['ICONIC EXCLUSIVE - Game Over Drop Crotch Track Pants - Kids by Rock Your Kid Online | THE ICONIC | Australia', 'file:///home/joe/Desktop/my-projects/FashionShop/iconic-product.html', '1608093980462.042'],
   ['Put a Sock in It Heel Boot | Nasty Gal', 'file:///home/joe/Desktop/my-projects/FashionShop/nastygal-product.html', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/shahyan/Desktop/my-projects/FashionShop/index.html/#review', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/shahyan/Desktop/my-projects/FashionShop/index.html/?123', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/shahyan/Desktop/my-projects/FashionShop/index.html/', '1608093980462.042'],
    ]




# clean data - get unique pages for each session
for j in range(len(dirty_pages)):
    page_name = dirty_pages[j][0]
    page_url = dirty_pages[j][1]
    page_sessionId = dirty_pages[j][2]

    not_seen = False

    if len(clean_pages) == 0:
        clean_pages.append([page_name, page_url, page_sessionId])
    else:
        for i in range(len(clean_pages)):
            next_page_name = clean_pages[i][0]
            next_page_url = clean_pages[i][1]
            next_page_sessionId = clean_pages[i][2]

            if page_url != next_page_url and page_name != next_page_name \
                    and page_sessionId == next_page_sessionId:
                not_seen = True
            else:
                not_seen = False

    if not_seen is True:
        clean_pages.append([page_name, page_url, page_sessionId])

print("$$$ clean...", len(clean_pages))

# correct answer should be 4 - as anyting after url e.g. #review is still duplicate!

更新示例 - 如果示例不清楚，请道歉（就像在 url 之后的 # 这些应该被视为一个 url）

'file:///home/joe/Desktop/my-projects/FashionShop/index.html/'

'file:///home/joe/Desktop/my-projects/FashionShop/index.html/?123'

'file:///home/joe/Desktop/my-projects/FashionShop/index.html'

Answer 1

您可以使用furl来规范化网址

from furl import furl

# Iterate over each page - subarray
for page in dirty_pages:
    # normalize url
    page[1] = furl(page[1]).remove(args=True, fragment=True).url.strip("/")

    # check if subarray already in clean_pages
    if page not in clean_pages:
        clean_pages.append(page)

Answer 2

你可以这样做：

for j in dirty_pages:
    page_name = j[0]
    long_url = j[1]
    split_url = long_url.split('#')
    short_url = split_url[0]
    page_sessionID = j[2]
    edited_subarray = [page_name, short_url, page_sessionID]
    if edited_subarray not in clean_pages:
        clean_pages.append(edited_subarray)

除非您需要在 clean_pages 列表中保留 url 的“#review”部分。

Answer 3

我认为本质上这个问题归结为有一个独特的 url。 如果是这样，您之前检查的方法有点过于复杂，您得到的结果归结为仅添加唯一名称的第一项。 因此 6 但是您似乎想要独特的 url。

为了克服 # 问题，我只是将 url 拆分为主题标签，并取了它的第一部分。 请注意，这只会在主题标签之前获取字符串的第一部分。 因此，如果有超过 1 个#，这可能会导致问题。

我也清理了一下

    # clean pages
clean_pages = []


# dirty pages
dirty_pages = [
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/index.html', '1608093980462.042'],
  ['Put a Sock in It Heel Boot | Nasty Gal', 'file:///home/joe/Desktop/my-projects/FashionShop/nastygal-product.html', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/index.html', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/index.html', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/product.html', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/product.html#review', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/product.html#review', '1608093980462.042'],
  ['Fashion Shop | Free Bootstrap Themes by 365Bootstrap.com', 'file:///home/joe/Desktop/my-projects/FashionShop/index.html', '1608093980462.042'],
  ['Put a Sock in It Heel Boot | Nasty Gal', 'file:///home/joe/Desktop/my-projects/FashionShop/nastygal-product.html', '1608093980462.042'],
  ['ICONIC EXCLUSIVE - Game Over Drop Crotch Track Pants - Kids by Rock Your Kid Online | THE ICONIC | Australia', 'file:///home/joe/Desktop/my-projects/FashionShop/iconic-product.html', '1608093980462.042'],
   ['Put a Sock in It Heel Boot | Nasty Gal', 'file:///home/joe/Desktop/my-projects/FashionShop/nastygal-product.html', '1608093980462.042'],
]


used_url = []
used_names = []

# clean data - get unique pages for each session
for page in dirty_pages:
    page_name = page[0]
    page_url = page[1].split('#')[0]
    page_sessionId = page[2]

    if page_url not in used_url:
        used_url.append(page_url)
        clean_pages.append(page)

print(clean_pages)
print("$$$ clean...", len(clean_pages))