[Biopython] Bio.Entrez.epost error with Python 3.2

[Nicolas Joannin]

Hello everyone,

I am having trouble with using Bio.Entrez.epost: see details below.
I have tried converting the variables to bytes, but everything I've tried
gives the same error message.

I'm guessing that this might be a bug in biopython when used with Python 3.
If not, could you please tell me where I got this wrong, and how I can fix
it?

Best regards,
Nicolas


Here are the details:
I have tried the following:

   - post_h=Entrez.epost("nuccore",id="160418,160351")
   - post_h=Entrez.epost(b"nuccore",id=b"160418,160351")
   -
   post_h=Entrez.epost("nuccore".encode("utf-8"),id="160418,160351".encode("utf-8")


>>> post_h=Entrez.epost("nuccore",id="160418,160351")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File
"/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/Bio/Entrez/__init__.py",
line 97, in epost
    return _open(cgi, variables, post=True)
  File
"/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/Bio/Entrez/__init__.py",
line 436, in _open
    handle = urllib.request.urlopen(cgi, data=options)
  File
"/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/urllib/request.py",
line 138, in urlopen
    return opener.open(url, data, timeout)
  File
"/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/urllib/request.py",
line 367, in open
    req = meth(req)
  File
"/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/urllib/request.py",
line 1066, in do_request_
    raise TypeError("POST data should be bytes"
TypeError: POST data should be bytes or an iterable of bytes. It cannot be
str.


Nicolas Joannin, Ph.D.
Bioinformatics Center
Kyoto University, Uji campus, Japan