send multiple files in a post request

Question

I am trying to send multiple files in a post request. Following is the code I use.

orig_src = "./orig_src/"
url = "http://"+server+":"+port+"/my_service"
files = []
for root, dirs, files in os.walk(orig_src):
    for fileName in files:
        if len(files) > 0:
            relDir = os.path.relpath(root, orig_src)
            relFile = os.path.join(relDir, fileName)
            files.append(('srcFile', (fileName, open(orig_src+relFile, 'rb'))))
response = requests.post(url, files = files)

I get the following error when I try to do this:

File "/usr/lib/python2.7/posixpath.py", line 66, in join
if b.startswith('/'):
AttributeError: 'tuple' object has no attribute 'startswith'

Any idea where the error might be? earlier I created a curl request using -F option and ran it using os.system command. That was running fine. But I am not able to send the post request now. where am i going wrong?

Somehow you are passing a `tuple` where you should be passing a `string`. — merlin2011, Aug 01 '14 at 19:14
yes, but I am not sure where. I took cues from this question: http://stackoverflow.com/questions/18179345/uploading-multiple-files-in-a-single-request-using-python-requests-module to upload multiple files in single request. — trailblazer, Aug 01 '14 at 19:16

score 1 · Accepted Answer · answered Aug 01 '14 at 20:31

You're passing a tuple to os.path.join as the traceback explains (in join).

You need a better name for the list that you're passing to requests because you are reusing the name files after you declare it as an empty list.

First you define files as an empty list in line 3
Then you define files as the third item you receive from the tuple you're unpacking in your for loop on line 4.

Since you're modifying files in place, you're adding tuples to the list. Python expects that you understand this and eventually iterates through the list until it reaches the first tuple. In this case fileName is now a tuple and you pass that to os.path.join which expects a string, not a tuple.

Change one of the two bindings and you should be fine.

send multiple files in a post request

1 Answers1