Python 在特定文本前插入文本

Question

我想在頁腳標記之前將一個 html 文件（myhtml.html）附加到現有的 html（abc.html）中。

這是我用來執行此操作的代碼：

with open("abc.html", "r+") as f:
    a = [x.rstrip() for x in f]
    print(a)
    index = 0
    for item in a:
        if item.startswith("<footer"):
        
            with open("myhtml.html","r") as f_insert:
                a_insert = [x_insert.rstrip() for x_insert in f_insert]
                
                index_insert = 0
                print(index)
                print(index_insert)
                for item_insert in a_insert:
                    a.insert(index, item_insert) 
                    index +=1
            break
        index += 1

這是我想要附加我的 html 文件的 HTML 文件的外觀：

</div></div><footer><div class=container-fl><div class="footer-text"><p class="text-center">

您會注意到頁腳標記不在行的開頭，因此我無法在頁腳標記之前附加我的 html。 有沒有辦法解決這個問題？

Answer 1

如果您只需要行列表而不需要更新輸入文件，則：

# read once
with open("myhtml.html","r") as f_insert:
    a_insert = [line.rstrip() for line in f_insert]

with open("abc.html", "r") as f:
    a = [line.rstrip() for line in f]
    for i, line in enumerate(a):
        if "<footer" in line:
            a[i:i] = a_insert
            break

a是結果list 。

但是，如果要更新輸入文件，則以下內容會更直接：

# read once
with open("myhtml.html","r") as f_insert:
    a_insert = f_insert.readlines() # keep whitespace at end

with open("abc.html", "r+") as f:
    a = f.readlines() # keep whitespace at end
    for i, line in enumerate(a):
        if "<footer" in line:
            a[i:i] = a_insert
            break
    f.seek(0, 0) # position to start of file
    for line in a:
        f.write(a)