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    <p>Use the built-in filter function:</p> <pre><code>&gt;&gt;&gt; hot_words = ["spam", "eggs"] &gt;&gt;&gt; message_body = "Oh boy, my favourite! spam, spam, spam, eggs and spam" &gt;&gt;&gt; matching_words = filter(lambda word: word in hot_words, message_body.split()) &gt;&gt;&gt; matching_words ['eggs', 'spam'] &gt;&gt;&gt; message_body = "No, I'd rather just egg and bacon" &gt;&gt;&gt; matching_words = filter(lambda word: word in hot_words, message_body.split()) &gt;&gt;&gt; matching_words [] </code></pre> <p>Splitting the string obviously turns it into a list of individual words, and the built-in 'filter' takes a lambda function as an argument which should returns true or false as to whether the item passed to it, should be included in the result set.</p> <p><strong>Update</strong> - To answer the question that I <em>think</em> you're asking in your comment: After the line:</p> <pre><code>trackeado = filter(lambda word: word in buffertracker, message.body.split()) </code></pre> <p>traceado should be a list containing the words in a message that match your list of words. Essentially, you just need to check whether or not that list has a 0 length or not:</p> <pre><code>if len(trackeado) &gt; 0: # Do something </code></pre> <p><strong>Update update</strong> - Ah, I've just realised that your buffertracker isn't a list, it's just a long string read in from a file. In my example, hot_words is a list of individual words that you're looking for. Depending on how your file is formatted, you'll need to do something to it, to turn it into a list. </p> <p>e.g. if your file is a comma-separated list of words, do this:</p> <pre><code>&gt;&gt;&gt; words = buffer tracker.split(',') &gt;&gt;&gt; trackeado = filter(lambda word: word in words, message.body.split()) &gt;&gt;&gt; if len(trackeado) &gt; 0: ... print "found" </code></pre>
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    1. POHow to check if something is in 2 lists with python
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    1. USDavid Downes
    1. USDavid Downes
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    1. COuhm.... tried this 3 lines of code: #1 trackeado = filter(lambda word: word in buffertracker, message.body.split()) #2 if not trackeado == None: #3 print("Test") However it was saving everything, ignoring the words in my list.
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    2. COWait, i just did re-read this, should i put IF true instead If not None?
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    3. COAlways getting: <filter object at 0x03369DF0>
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