import pyPdf

def getPDFContent():
    content = ""
    # Load PDF into pyPDF
    pdf = pyPdf.PdfFileReader(file(filenamePdf, 'rb'))
    # Iterate pages
    for i in range(0, pdf.getNumPages()):
        # Extract text from page and add to content
        content += pdf.getPage(i).extractText() + " \n"
    # Collapse whitespace
    content = u" ".join(content.replace(u"\xa0", u" ").strip().split())
    return content

f = open(filenameTxt,'w+')
f.write(getPDFContent())
f.close()

line 8, in getPDFContent for i in range(0, pdf.getNumPages()):
line 534, in readFromStream
    raise utils.PdfReadError, "multiple definitions in dictionary"
pyPdf.utils.PdfReadError: multiple definitions in dictionary