facebook graph api - Is it possible to open an in-memory image using the python open function? -


i using python library (poster) takes file-like object argument, documentation states:

the file-like objects must support .read() , either .fileno() or both .seek() , .tell().

i have tried library using python open function , works fine. downloading image url using following:

access_token = "xxxxxxxxxxxxxxxxxxxxx" postphotourl = "https://graph.facebook.com/me/photos?access_token=%s" % access_token  register_openers()  # image external url data = urllib2.urlopen("http://example.com/image.png") data = stringio(data.read())  ### data, headers = multipart_encode({"source":open("file.png")}) <- works fine data, headers = multipart_encode({"source":data}) request = urllib2.request(postphotourl,data,headers)

edit: goal fetch image external url , post using facebook graph api. when use python open function have no issues. when try use stringio, no body sent post request.

if idea use poster package streaming http upload, shouldn't converting image data pil image object. do...

data = urllib2.urlopen("http://example.com/image.png") data = stringio(data.read())

...then can pass data variable poster.

unless, of course, wanted convert image pil first, should mention in question.

update

as why fails stringio, might poster checking filename of open file, , using determine correct content-type or somesuch, won't able when reading stringio.

i've never used package, , examples aren't comprehensive, might worth checking difference between headers variables when call like...

from poster.encode import multipart_encode  data = open('example.png', 'rb') datagen, headers = multipart_encode({"image1": data})

...versus...

from poster.encode import multipart_encode  data = urllib2.urlopen("http://example.com/image.png") data = stringio(data.read()) datagen, headers = multipart_encode({"image1": data})

update #2

looks right content-type thing. poster source code of encode.py lines 168-174...

        if hasattr(value, 'read'):             # looks file object             filename = getattr(value, 'name', none)             if filename not none:                 filetype = mimetypes.guess_type(filename)[0]             else:                 filetype = none

...although there may other issues if filename none. try this...

from poster.encode import multipart_encode, multipartparam  data = urllib2.urlopen("http://example.com/image.png") data = stringio(data.read()) param = multipartparam(name='source',                        filename='image.png',                        filetype='image/png',                        fileobj=data) datagen, headers = multipart_encode({"source": param})

Comments

Post a Comment

Popular posts from this blog

.htaccess - First slash is removed after domain when entering a webpage in the browser -

sometimes when hit address of webpage in browser, removes first slash after domain. examples: www.mywebsite.com/scripts/script_6.php -> trying load www.mywebsite.comscripts/script_6.php www.mywebsite.com/test.php -> trying load www.mywebsite.comtest.php after entering again, loads page. a .htaccess settings must wrong: rewritebase / errordocument 404 http://www.mywebsite.com/oops.php errordocument 401 /notallowed.php rewriteengine on # turn on rewriting engine #gzip <ifmodule mod_deflate.c> addoutputfilterbytype deflate text/text text/html text/plain text/xml text/css application/x- javascript application/javascript </ifmodule> #end gzip rewritecond %{http_host} ^mywebsite\.com rewriterule ^(.*)$ http://www.mywebsite.com$1 [r=permanent,l] directoryindex index6.php rewriterule ^termsofuse/?$ termsofuse.php [nc,l] # handle requests "adpolicy" rewriterule ^privacy-policy/?$ privacy-policy.php [nc,l] # handle requ...
Read more

Socket.connect doesn't throw exception in Android -

if put nonsense url no exception thrown , none of rest of code executed not rest of asynctask called method connects. try { socketcliente.connect(new inetsocketaddress("f", port), 2000); } catch (unknownhostexception e) { geterror("host doesn't exist"); return -1; } catch (ioexception e) { geterror("could not connect: host down"); return -1; } add catch statement. catch ( exception e ) { log.d(tag, e.getmessage(),e); toast.maketext(getapplicationcontext(), "unexpected error:" + e.getmessage(), toast.length_long).show(); } this write log , pop toast tell what's going on.
Read more

SPSS keyboard combination alters encoding -

my question not have programming practical issue on spss. accident keyword combination cannot remember because did not intend press changed encoding in spss , text in data in different language english shown small boxes. nevertheless, when kind of analysis performed different language text shown in output. does know reason? tried change encoding did not produce result. first, @ edit > options , see whether setting unicode or locale. might fix it. if have text in multiple languages, want unicode. otherwise, may have specific locale set wrong. can change set locale, need know locale want use.
Read more