Editing Twitter (CDSW)

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===Download the Twitter API project===
===Download the Twitter API project===


* Download the following zip file: https://github.com/CommunityDataScienceCollective/twitter-cdsw/archive/master.zip
* Right click the following file, click "Save Target as..." or "Save link as...", and save it to your Desktop directory: https://mako.cc/teaching/2015/cdsw-autumn/twitter-api-cdsw.zip
* Extract the zip folder into a new folder on your Desktop.
* The ".zip" extension on the above file indicates that it is a compressed Zip archive. We need to "extract" its contents. To do this on Windows, click on "Start", then "Computer".  If you are a Mac, open Finder and navigate to your Desktop directory. Find <code>twitter-api-cdsw.zip</code> on your Desktop and double-click on it to "unzip" it. That will create a folder called <code>twitter-api-cdsw</code> containing several files.


===Enter your API information===
===Enter your API information===


* Start Juypter notebook and navigate to the folder you just created on your desktop.
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* Double click to open the file "twitter_authentication.py". This is a python file, meaning it contains python code, but it is not a notebook.
'''On Windows'''
 
* Start your text editor (probably Notepad++ if you [[Windows text editor|installed it following our instructions last time]]). Navigate to the directory that contains Twitter API (probably something of the form <code>C:\Users\'''YOURUSERNAME'''\Desktop\twitter-api-cdsw</code>).
 
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'''On Mac'''
 
* Start your text editor (probably TextWrangler if you installed it following [[OSX text editor|our instructions]]). Navigate to the directory that contains the Twitter API project (probably something of the form <code>~/Desktop/twitter-api-cdsw</code>).
 
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* Open up the file <code>twitter_authentication.py</code> in your text editor.
* You will see four lines that include four variables in ALL CAPITALS that are being assigned, in the normal ways we learned about last session, to strings. At the moment, all of the strings say CHANGE_ME.
* You will see four lines that include four variables in ALL CAPITALS that are being assigned, in the normal ways we learned about last session, to strings. At the moment, all of the strings say CHANGE_ME.
* Go find the four keys, tokens, and secrets you created and wrote-down when you followed the [[Community Data Science Workshops/Twitter authentication setup|Twitter authentication setup]]. Change every string that says CHANGE_ME into a string that includes the key, token, or secret you downloaded. Remember that since these are strings, we need to include quotations marks around them. Also make sure that you match up the right keys and tokens with the right variables.
* Go find the four keys, tokens, and secrets you created and wrote-down when you followed the [[Community Data Science Workshops/Twitter authentication setup|Twitter authentication setup]]. Change every string that says CHANGE_ME into a string that includes the key, token, or secret you downloaded. Remember that since these are strings, we need to include quotations marks around them. Also make sure that you match up the right keys and tokens with the right variables.
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===Test the Twitter API code===
===Test the Twitter API code===


Open the notebook "ex0_print_a_tweet.py" in jupyter. Execute all of the cells. You should see the text of 100 tweets in the second to last cell. If you see an error, you probably have a problem with the API information you entered in the previous step. A volunteer can help you.
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'''On Windows'''
 
Start up PowerShell and navigate to the Desktop\twitter-api-cdsw directory where the Twitter API code lives. For example, if the Twitter API project is at <code>C:\Users\'''YOURUSERNAME'''\Desktop\twitter-api-cdsw</code>,
 
cd C:\Users\'''YOURUSERNAME'''\Desktop\twitter-api-cdsw
 
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'''On Mac'''
 
Start a command prompt and navigate to the Desktop/twitter-api-cdsw directory where the Twitter API code lives. For example, if the Twitter API project is at ~/Desktop/twitter-api-cdsw,
 
cd ~/Desktop/twitter-api-cdsw
 
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This will change you into the right directory.
 
<code>ls</code> will show you the source code files in that directory. One of the files is "<code>twitter1.py</code>", which has a "<code>.py</code>" extension indicating that it is a Python script. Type:
 
python twitter1.py
 
at the command prompt to execute the <code>twitter1.py</code> Python script. Wait a little while while your computer connects to Twitter. You should see a series of tweets run by your screen. If you don't, let a mentor know.




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