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POPython: urllib.urlencode is escaping my stuff *twice*
 

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  1. POPython: urllib.urlencode is escaping my stuff *twice*
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    <p>... but it's not escaping it the same <em>way</em> twice.</p> <p>I'm trying to upload ASCII output from gpg to a website. So, the bit I've got, so far, just queries the table, shows me the data it got, and then shows it to me after it encodes it for a HTTP POST request:</p> <pre><code>cnx = connect() sql = ("SELECT Data FROM SomeTable") cursor = cnx.cursor() cursor.execute(sql) for (data) in cursor: print "encoding : %s" % data postdata = urllib.urlencode( { "payload" : data } ) print "encoded as %s" % postdata </code></pre> <p>... but what I get is:</p> <pre><code>encoding : -----BEGIN PGP MESSAGE----- Version: GnuPG v1.4.12 (GNU/Linux) .... etc... encoded as payload=%28u%27-----BEGIN+PGP+MESSAGE-----%5CnVersion%3A+GnuPG+v1.4.12+... etc ... </code></pre> <p>The part to notice is that the newlines aren't getting turned into %0A, like I'd expect. Instead, they're somehow getting escaped into "\n", and then the backslashes are escaped to %5C, so a newline becomes "%5Cn". Even stranger, the data gets prepended with <em>%28u%27</em>, which comes out to "<em>(u'</em>".</p> <p>Oddly, if I just do a basic test with:</p> <pre><code>data = "1\n2" print data print urllib.urlencode( { "payload" : data } ) </code></pre> <p>I get what I expect, newlines turn into %0A...</p> <pre><code>1 2 payload=1%0A2 </code></pre> <p>So, my hunch is that the data element returned from the mysql query isn't the same kind of string as my literal "1\n2" (maybe a 1-element dict... dunno), but I don't have the Python kung-fu to know how to inspect it.</p> <p>Anybody know what's going on, here, and how I can fix it? If not, any suggestions for how to POST this via HTTP with everything getting escaped properly?</p>
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    1. USJemenake
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    1. COprint type(data)
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      1. POPython: urllib.urlencode is escaping my stuff *twice*
      1. USwRAR
    2. COWhat's with all the extra parens, like `for (data) in cursor` instead of `for data in cursor`, or `sql = ("…")` instead of `sql = "…"`? Are you expecting them to do something?
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      1. POPython: urllib.urlencode is escaping my stuff *twice*
      1. USabarnert
    3. COI pasted it from an example which had more elements in it... as in "for (first, last, phone) in userquery...". I figured Python needed even single items to remain inside parens in order to do the result-set-lookup weirdness that it does. Oh, the "sql = (...)" was... yeah, that was left over from something else. I was recycling some code which did an INSERT, and I was doing a cursor.execute(queryTemplate,queryValues) kind of thing.
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      1. POPython: urllib.urlencode is escaping my stuff *twice*
      1. USJemenake
 

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