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POUpload and parse csv file with google app engine
 

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    <p>I'm wondering if anyone with a better understanding of python and gae can help me with this. I am uploading a csv file from a form to the gae datastore. </p> <pre><code>class CSVImport(webapp.RequestHandler): def post(self): csv_file = self.request.get('csv_import') fileReader = csv.reader(csv_file) for row in fileReader: self.response.out.write(row) </code></pre> <p>I'm running into the same problem that someone else mentions here - <a href="http://groups.google.com/group/google-appengine/browse_thread/thread/bb2d0b1a80ca7ac2/861c8241308b9717" rel="noreferrer">http://groups.google.com/group/google-appengine/browse_thread/thread/bb2d0b1a80ca7ac2/861c8241308b9717</a></p> <p>That is, the csv.reader is iterating over each character and not the line. A google engineer left this explanation:</p> <blockquote> <p>The call self.request.get('csv') returns a String. When you iterate over a string, you iterate over the characters, not the lines. You can see the difference here: </p> </blockquote> <pre><code> class ProcessUpload(webapp.RequestHandler): def post(self): self.response.out.write(self.request.get('csv')) file = open(os.path.join(os.path.dirname(__file__), 'sample.csv')) self.response.out.write(file) # Iterating over a file fileReader = csv.reader(file) for row in fileReader: self.response.out.write(row) # Iterating over a string fileReader = csv.reader(self.request.get('csv')) for row in fileReader: self.response.out.write(row) </code></pre> <p>I really don't follow the explanation, and was unsuccessful implementing it. Can anyone provide a clearer explanation of this and a proposed fix?</p> <p>Thanks, August</p>
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