Re: [Jython-dev] AttributeError: 'unicode' object has no attribute 'readline'

[Jim B. <jim...@py...>]

FWIW, this really is a question for the jython-users mailing list - you are
more likely to have users who have experience with this specific package.
However, let's see what we can do:

On Wed, Jun 17, 2015 at 7:51 AM, Vincenzo Molendini <v.m...@ya...>
wrote:

> Dear all,
> I have imported a new version of eppy library
> Eppy Tutorial — eppy 0.4.6.4a documentation
> <http://pythonhosted.org/eppy/Main_Tutorial.html>
> ..
> in a Java Web Application and when I doing this
>
> iddfile = request.getContextPath() + '/Energy+V7_2_0.idd'
>

So these are paths, not files. Specifically the result of
request.getContextPath() will be a unicode object; when you concat with a
str ('/Energy+V7_2_0.idd'), it remains unicode.


> fname1 = request.getContextPath() + '/smallfile.idf'
> IDF.setiddname(iddfile)
> idf1 = IDF(fname1)
>
> I have this error:
>
> Traceback (most recent call last):
>   File "/Users/vincenzo/NetBeansProjects/ProvaPython/build/web/serv.py", line 18, in doPost
>     idf1 = IDF(fname1)
>   File "/Users/vincenzo/NetBeansProjects/ProvaPython/build/web/eppy/modeleditor.py", line 615, in __init__
>     super(IDF3, self).__init__(idfname)
>   File "/Users/vincenzo/NetBeansProjects/ProvaPython/build/web/eppy/modeleditor.py", line 560, in __init__
>     super(IDF2, self).__init__(idfname)
>   File "/Users/vincenzo/NetBeansProjects/ProvaPython/build/web/eppy/modeleditor.py", line 488, in __init__
>     super(IDF1, self).__init__(idfname)
>   File "/Users/vincenzo/NetBeansProjects/ProvaPython/build/web/eppy/modeleditor.py", line 442, in __init__
>     self.read()
>   File "/Users/vincenzo/NetBeansProjects/ProvaPython/build/web/eppy/modeleditor.py", line 472, in read
>     readout = idfreader1(self.idfname, self.iddname,
>   File "/Users/vincenzo/NetBeansProjects/ProvaPython/build/web/eppy/idfreader.py", line 148, in idfreader1
>     versiontuple = iddversiontuple(iddfile)
>   File "/Users/vincenzo/NetBeansProjects/ProvaPython/build/web/eppy/idfreader.py", line 35, in iddversiontuple
>     line1 = fhandle.readline()*AttributeError: 'unicode' object has no attribute 'readline'*
>
> Although I haven't tried to reproduce your code here, it looks like you
were trying to treat the above unicode path as it's an already open file.
Do one more step, by opening the file for that path:

with open(request.getContextPath() + '/Energy+V7_2_0.idd') as iddfile:
  # use this file in your code

It's important that you close the file, otherwise you will immediately have
a resource leak. Using the `with open(...)` idiom is the standard approach.

- Jim