avatarJenn M. Wilson

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ime.datetime.now()), <span class="hljs-string">'price'</span>: price, <span class="hljs-string">'item'</span>: item, <span class="hljs-string">'discount'</span>: discount }</pre></div><p id="7bae">In our case, the output is:</p><div id="477f"><pre>{ 'date': '<span class="hljs-number">2018-05-13</span> 13:37:21.<span class="hljs-number">414342</span>', 'price': '169.99', 'item': 'Dyson AM08 Bladeless Pedestal Fan | White/Silver | Refurbished', 'discount': '399.99 | 57% off' }</pre></div><h1 id="8e42">Step 2: Saving to S3</h1><p id="f971">To save our result to S3, we use <a href="https://boto3.readthedocs.io/en/latest/index.html">Boto 3</a>, the AWS SDK for Python. First we get a reference to S3. Then we create an <code>object</code> with given <code>bucket</code> and <code>file_name</code>(the bucket was created beforehand though this can be done programmatically). Finally, we convert our data to <code>json</code> and write our <code>data</code> into the object.</p><div id="acf2"><pre><span class="hljs-keyword">import</span> boto3 <span class="hljs-keyword">import</span> json</pre></div><div id="34fd"><pre>def <span class="hljs-built_in">save_file_to_s3</span>(bucket, file_name, data): s3 = boto3.<span class="hljs-built_in">resource</span>(<span class="hljs-string">'s3'</span>) obj = s3.<span class="hljs-built_in">Object</span>(bucket, file_name) obj.<span class="hljs-built_in">put</span>(Body=json.<span class="hljs-built_in">dumps</span>(data))</pre></div><p id="1bfc">We will package this utility function in the handler file where we house the actual function Lambda will call. More on this in the following steps.</p><p id="5919">Incidentally, if saving tabular data as in our example, we might choose a database instead of S3. We illustrate S3 here as it is also a good choice for documents, we are also frequently scraped items.</p><h1 id="dd59">Step 3: The Handler Function</h1><p id="6f6c">A Lambda function needs a <a href="https://docs.aws.amazon.com/lambda/latest/dg/python-programming-model-handler-types.html">handler function</a>, which is the function Lambda will execute when it gets called. We will put the handler function, along with our Python dependencies, in a sub-directory called <code>ebay_deal_scraper</code>. This will allow us to separate the files which will be part of the Lambda package, and ancillary project files such as the Serverless config file discussed in later steps.</p><p id="2abf">We name our handler function <code>scrape</code> and give it the signature required by Lambda. We don’t use the <code>event</code> or <code>context</code> parameters, but if you needed to pass data into your Lambda function, they are what you would use.</p><div id="2ee8"><pre><span class="hljs-title">def</span> scrape(event, context): <span class="hljs-class"><span class="hljs-keyword">data</span> = deal_scrape()</span> file_name = f<span class="hljs-string">"deals-{data['date']}"</span> save_file_to_s3('ebay_daily_deals', file_name, <span class="hljs-class"><span class="hljs-keyword">data</span>)</span></pre></div><p id="c7da">Our handler calls our <code>deal_scrape()</code> function, then writes the returned data to S3 under a file name based on the date.</p><h1 id="6b1f">Step 4: Packaging our Function</h1><p id="8815">Our custom code is ready to go, but Lambda also requires you include your dependencies in the package you upload to AWS. In our case this means <code>pip installing</code> our Python packages locally. In the <code>ebay_deal_scrapper</code> directory, we run:</p><div id="bc42"><pre>pip3 <span class="hljs-keyword">install </span>requests <span class="hljs-keyword">bs4 </span>-t .</pre></div><p id="2ef0">(if you have any problems, see this <a href="https://stackoverflow.com/questions/24257803/distutilsoptionerror-must-supply-either-home-or-prefix-exec-prefix-not-both">Stack Overflow issue</a>)</p><p id="8621">This will install the <code>requests</code> and <code>beatiful soup</code> packages in our directory. Lamdba has<code>boto3</code> pre-installed, so you don’t need to include it.</p><p id="bea3">Incidentally, including dependencies can be quite hairy if you require platform-dependent C/C++ libraries like <a href="https://www.boost.org/">Boost</a>, and may require you to use Docker to bundle everything together under the Amazon Linux OS that Lambda requires. But that’s the topic of another blog post.</p><p id="8188">When you have dependencies, you probably want to use a zip file to package everything up. We give ours the generic name of <code>package.zip</code>:</p><div id="f3ce"><pre><span class="hljs-built_in">zip</span> -r package.<span class="hljs-built_in">zip</span> *</pre></div><h1 id="b305">Step 5: Deploying to Lambda</h1><p id="6f52">We will use the Serverless framework to deploy to AWS. Serverless offers a set of command line tools which make it very easy to deploy to the major serverless cloud providers including AWS. You can install it using <code>npm</code>:</p><p id="8fc7"><code>npm install -g serverless</code></p><p id="110d">You specify Serverless deployment instructions in a file called <code>serverless.yml</code>. If you want to generate a boilerplate file, you can run:</p><div id="4295"><pre>serverless <span class="hljs-built_in">create</span> <span class="hljs-comment">--template aws-python</span></pre></div><p id="d62a">This will also create a boilerplate<code>handler.py</code> file, but all we need there is the function which we specify i

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n the <code>serverless.yml</code> config file under the <code>functions</code> section.</p><div id="7831"><pre><span class="hljs-symbol">service:</span> ebay-deal-scraper <span class="hljs-symbol"> provider:</span> <span class="hljs-symbol"> name:</span> aws <span class="hljs-symbol"> runtime:</span> python3<span class="hljs-number">.6</span> <span class="hljs-symbol"> package:</span> <span class="hljs-symbol"> artifact:</span> ebay_deal_scraper/package.zip <span class="hljs-symbol"> functions:</span> <span class="hljs-symbol"> ebay_scrape:</span> <span class="hljs-symbol"> handler:</span> handler.scrape</pre></div><p id="8b75">The <code>provider</code> section tells Serverless we’re deploying to AWS and that we’re using <code>python 3.6</code>.</p><p id="5fec">The <code>package</code> section is where we specify the zip file we created in the last step.</p><p id="5313">We are ready to deploy!</p><p id="273c">From the top directory of your project run:</p><div id="d1ed"><pre><span class="hljs-attribute">serverless deploy</span></pre></div><p id="c024">If you have multiple AWS profiles (such as work and personal), you can specify a profile:</p><div id="981f"><pre>serverless <span class="hljs-keyword">deploy</span> <span class="hljs-params">--aws-profile</span> profile_i_want_to_use</pre></div><p id="eed1">If all goes well, you should get the following output:</p><div id="4f5e"><pre>➜ ebay<span class="hljs-params">-deals</span><span class="hljs-params">-scrape</span> git:(master) ✗ sd -<span class="hljs-params">-aws</span><span class="hljs-params">-profile</span> michael Serverless: Packaging service<span class="hljs-params">...</span> Serverless: Uploading CloudFormation file <span class="hljs-keyword">to</span> S3<span class="hljs-params">...</span> Serverless: Uploading artifacts<span class="hljs-params">...</span> Serverless: Validating template<span class="hljs-params">...</span> Serverless: Updating <span class="hljs-built_in">Stack</span><span class="hljs-params">...</span> Serverless: Checking <span class="hljs-built_in">Stack</span> update progress<span class="hljs-params">...</span> <span class="hljs-params">...</span><span class="hljs-params">...</span><span class="hljs-params">...</span> Serverless: <span class="hljs-built_in">Stack</span> update finished<span class="hljs-params">...</span> Service Information service: ebay<span class="hljs-params">-deal</span><span class="hljs-params">-scraper</span> stage: dev region: us<span class="hljs-params">-east</span><span class="hljs-number">-1</span> <span class="hljs-built_in">stack</span>: ebay<span class="hljs-params">-deal</span><span class="hljs-params">-scraper</span><span class="hljs-params">-dev</span> api keys: <span class="hljs-literal">None</span> endpoints: <span class="hljs-literal">None</span> functions: ebay_scrape: ebay<span class="hljs-params">-deal</span><span class="hljs-params">-scraper</span><span class="hljs-params">-dev</span><span class="hljs-params">-ebay_scrape</span> Serverless: Removing old service versions<span class="hljs-params">...</span></pre></div><p id="d320">You can now try to invoke your function with:</p><div id="b911"><pre>serverless<span class="hljs-built_in"> invoke </span>-f ebay_scrape <span class="hljs-comment"># --aws_profile profile_name </span></pre></div><p id="4385">This will result in an AccessDenied error. To fix this, you need to add permission to your Lambda function’s role (this gets created together with the function).</p><h1 id="da14">Step 6: Giving Lambda S3 Privileges</h1><p id="b13d">Go to the Roles page in the IAM section of the AWS dashboard. Find the role for your Lambda function, in our case <code>ebay-deal-scraper-dev-us-east-1-lambdaRole</code> and add a policy which allows it to access S3. <code>AmazonS3FullAccess</code> will work for our demo, though in production you may want to create a new policy which is more restrictive.</p><p id="e0d1">Once your function is deployed you should also be able to view and test it from the AWS console.</p><figure id="dc68"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*A1uCWEB2Hb-YS7lMEiXCww.png"><figcaption></figcaption></figure><h1 id="6080">Step 7: Scheduling the Lambda Function Using CloudWatch</h1><p id="8cd3">Final step! Go to the CloudWatch Management Page and click the<code>Rules</code> tab. Under Event Source, select <code>Schedule</code> and fill in a cron expression. We set ours to run every day at 6PM GMT, or afternoon in US Eastern Time. Next, in the <code>Targets</code> section, choose <code>Lambda function</code> in the select and then your Lambda function from the list in the <code>Function</code> select. You’re done!</p><figure id="1595"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*amgaVqAlsAl0pQdYaAP_PA.png"><figcaption></figcaption></figure><p id="eb37">That’s the whirlwind tour of scraping the serverless way. I hope this gives a taste of the technologies involved, though each of them could be the subject of many, many blog posts.</p><p id="f860">As far as scraping goes, with the rise of big data/machine learning, data acquisition is becoming more and more important. And if, for instance, you wanted to do something like feed your machine learning model with data to <a href="https://www.dataquest.io/blog/machine-learning-tutorial/">make price predictions for AirBnB</a>, scraping might be your only option. The serverless architecture exemplified here offers an efficient way to do this.</p></article></body>

What To Do If You Question Your Divorce Decision

You’re making the right choice. Really.

You’re in the right direction (Photo by Gaelle Marcel on Unsplash)

You’re in the right direction (Photo by Gaelle Marcel on Unsplash)

There are many milestones when getting a divorce. Filing the paperwork. Deciding to get a lawyer. Hiring a mediator. Telling friends. Telling the kids. Oh and the biggest one: deciding to actually get a divorce.

In this stage of divorce purgatory, no one tells you about the Did I Make The Right Choice stage.

Divorce isn’t a one-and-done kind of deal. You don’t decide you want a divorce, fill out a form online, click Submit and you’re done. Instead, it’s like going to the DMV with the Sloths from Zootopia. But it’s not the DMV and their job is to find a needle in a haystack.

It takes forever. My situation is simple; my heart goes out to anyone who has custody issues or a shared business. I thought we could bust out the whole thing in max, three weeks.

I was so very, very wrong.

California has a “cooling off” period, which means couples wait six months for their divorce to finalize. I assume it’s due to the number of celebrities who break up and reunite repeatedly (looking at you, J Lo).

Between the cooling-off period and the legal bullshit, that leaves months to ruminate. It consumes your mind. You become a shitty friend because you can’t keep track of their lives when you’re mentally spinning financial numbers and the potential effect on the children.

I’m an overthinker. Combined with generalized anxiety disorder, my brain is like a hundred radios on all at the same time. I can shut off one, but another one turns on. Ending my marriage has played on those radios for years.

Once I announced the divorce, I felt free. I wasn’t happy. I wasn’t emotionless. But the feeling of freedom when throwing a bomb on a problem and saying “fuck it all and let the chips land where they may” was liberating.

I don’t regret the divorce request. I’m also not fully divorced, nor have I even moved out, so for now my life physically is pretty cushy. Things will feel different when I’ve moved out and I’m the sole income earner with two kids.

However, I do question if I really should have done this. I tell myself that I’m sufficiently materialistic and being able to splurge during Nordstrom’s Anniversary Sale would have boosted my depression levels. Or how my incessant need to fight aging could be alleviated with a mini facelift, paid for with the savings I’m banking for the divorce. Life would be easier.

But it wouldn’t be happier.

I know this because I remind myself of two things whenever I wonder if I can give up the comfort and financial security of this marriage.

First, I tell myself that I spent every day for years pondering the divorce decision. I agonized over it. I endlessly read books and online articles about its effects on children. There was so much crying. So much anger and pent-up resentment.

If I stayed, I would waste every day for the rest of my life wondering if I should divorce. If you have to ask yourself daily if you should go in one direction, then the answer is yes…that’s the direction. No one should stay in a marriage if they’re plagued with daily thoughts of leaving.

Secondly, I’m often in the kitchen at the same time as my soon-to-be ex-husband. I think he purposely goes in there when I’m in there. I time it so that my presence is during off-hours, not prime eating or snacking time. It never fails that when I’m in the kitchen preparing food for myself, that’s when he goes in and putters around until he finds something to eat.

And then I hear his chewing.

His loud, skin-crawling chewing.

I can hear his chewing when I’m in another room with the door closed. At a dinner with friends, the mashing of food in his mouth is the only one I can hear. It’s been that way for almost two decades; even when I enjoyed his company, the sound of his eating made my body tense in disgust. After much analysis, I think it’s because he takes massive bites of his food and eats quickly. It’s disgusting.

That’s when I tell myself that if I can’t even enjoy a single meal with the person I’m married to, then I shouldn’t be married to them. Maybe it’s an autism-sensory thing. All I know is that hearing him chew gives me a violent physical reaction. My muscles tense up. My fingers grip into a fist. I bring my shoulders up like I’m trying to use them to cover my ears. My blood pressure rises as my heart pounds loudly. My brain begs for someone to play a broken violin or run a fork on a chalkboard to ease the sounds of his revolting chewing.

For those two reasons, I don’t look back on my decision.

I wish I could look past them. I don’t even think about the porn addiction, the dead bedroom, the massage parlors, the name-calling, or the fighting. These two reasons are enough to fuel me forward and clear my mind of any potential regret.

Hopefully, I’ll continue to move forward leaving any regrets in the dust.

Mental Health
Divorce
Relationships
Sex
Love
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