pyparsing pproblems

[standenman]

I am trying to parse the bookmarks from a document x.pdf

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>>> import pyparsing as pp >>> import PyPDF2 >>> from PyPDF2 import PdfFileReader >>> pdfFileObj=open('x.pdf','rb') >>> PdfReader=PyPDF2.PdfFileReader(pdfFileObj) >>> pdfNestedExp=PdfReader.getOutlines() >>> print(pp.nestedExpr(opener='{', closer='}').parseString(pdfNestedExp))

This code results int he following error:

Error:
Traceback (most recent call last):
  File "<pyshell#57>", line 1, in <module>
    print(pp.nestedExpr(opener='{', closer='}').parseString(pdfNestedExp))
  File "C:\Python34\lib\site-packages\pyparsing.py", line 1620, in parseString
    instring = instring.expandtabs()
AttributeError: 'list' object has no attribute 'expandtabs'

What am I doing wrong?

[standenman]

I am trying to parse a Python nested list that is the result of the getOutlines() function of module PyPFD2 using pyparsing module. This is the result I get. what in the world are 'expandtabs' and why is that making a difference to my parse attempt?

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import PPDF2,pyparsing from pyparsing import Word, alphas, nums pdfFileObj=open('x.pdf','rb') pdfReader=PyPDF2.PdfFileReader(pdfFileObj) List=pdfReader.getOutlines() myparser = Word( alphas ) + Word(nums, exact=2) +"of" + Word(nums, exact=2) myparser.parseString(List)

Error:
Traceback (most recent call last):
  File "<pyshell#23>", line 1, in <module>
    myparser.parseString(List)
  File "C:\python\lib\site-packages\pyparsing.py", line 1620, in parseString
    instring = instring.expandtabs()
AttributeError: 'list' object has no attribute 'expandtabs'

[Gribouillis]

what in the world are 'expandtabs' and why is that making a difference to my parse attempt?

str.expandtabs() is a builtin method in class str. Obviously you are calling a method (parseString()) that expects a string argument with a list argument and this is the cause for the error.