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POReplacing a section of text in one file with text from another using python
 

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  1. POReplacing a section of text in one file with text from another using python
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    <p>First a bit of background: yes, I am new to python, but I like to dabble and learn things. </p> <p>The goal is this: I have an intranet website here at work and they have us on a static server with no server side scripting allowed, meaning no PHP. So as I add new pages, I must update every freakin page's menu with the new link. Fortunately, I have an application called ArcGIS installed on my computer and with it came an installation of python. So I was thinking it would be nice to just put together a script that would read a file called "menu.txt" and then search recursively in my directory (and subdirectories) for files with ".html" and replace all text between some comment tags, like <code>&lt;!--begin menu--&gt;</code> and <code>&lt;!--end menu--&gt;</code>, with the text in "menu.txt"</p> <p>So I started looking and found this snippet of code:</p> <pre><code>with open('menu.txt', 'r') as f: # read entire file into file1 # ASSUMING 'file1.txt' is relatively small... file1 = f.read() with open('test.html', 'r') as f: # ASSUMING 'file2.txt' is relatively small... file2 = f.read() # read file into file2 # index() will raise an error if not found... f1_start = file1.index('&lt;!--123--&gt;') f1_end = file1.index('&lt;!--321--&gt;', f1_start) # look for '//end' after '//start' f2_start = file2.index('&lt;!--123--&gt;') f2_end = file2.index('&lt;!--321--&gt;', f2_start) # replace file2 lines with proper file1 lines file2[f2_start:f2_end] = file1[f1_start:f1_end] with open('test.html', 'w') as f: f.write(file2) </code></pre> <p>and I've also seen many examples using <code>re</code>, <code>replace</code> and such, but nothing that seems to be related to what i need. Anyway, right now I'm just trying it on the one file in the same directory, but when I run this on either my linux machine or in a windows python shell I get:</p> <pre><code>Traceback (most recent call last): File "P:\webpages\filereplace.py", line 18, in &lt;module&gt; file2[f2_start:f2_end] = file1[f1_start:f1_end] TypeError: 'str' object does not support item assignment </code></pre> <p>I thought the problem might've been the <code>with open</code> part, but I don't know.</p> <p>In this case the contents of menu.txt are essentially a beginning comment tag <code>&lt;!--123--&gt;</code>, then all of the <code>&lt;div id=menu&gt;blah blah blah&lt;/div&gt;</code>, then an end comment tag <code>&lt;!--321--&gt;</code>. In my html file, I use the same comment tags, and you get the picture...</p> <p>Any suggestions?</p>
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    1. USrickman90
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    1. COIf you are familiar with PHP (which is what it sounds like), why not simply write your site as though server-side scripting were possible, then simply run through each page and take the generated output as static pages?
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      1. USGareth Latty
    2. CO'str' type in python is immutable, which means you can't do certain operations/changes on it. What you can do is make your file1,file2 as a list, and using your same code to make changes, and convert back to string.
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      1. USxbb
    3. COfile.read() loads your file into a string and you can't replace parts of the string with []. You might try [str.replace](http://docs.python.org/2/library/string.html#string.replace).
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      1. USMichaelJCox
 

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