[Python] Add text in the content pages of the pdf using PyPDF2

I am trying to add page number in the lower side of the page using pypdf2. I am able to add the relevant texts and syntax using the below code:

def addText(page, text, position, ignoreByteStringObject=False, debug=False):
"""
Add user given text to a page content
age is the page on which text has to be added
:text is the text string
osition is the place where it has to be added, examples "top-right", "top-left", "bottom-right", "bottom-left", "bottom-center", "top-center"
aram bool ignoreByteStringObject: optional parameter
to ignore ByteString Objects.
"""
pageRef = page
content = pageRef['/Contents'].getObject()
print content
# if not isinstance(content, ContentStream()):
content = ContentStream(content, pageRef)#creating contentstream class instance
if debug:
print content.operations

# append this line ([], 'BT'), ([1, 0, 0, 1, 52, 34.5], 'Tm'), (['/F1', 9], 'Tf'), ([0, 0, 0], 'rg'), ([u'Study: Classified #1'], 'Tj'), ([0], 'g'), ([], 'ET'), ([], 'BT'),
# ([1, 0, 0, 1, 336.1, 34.5], 'Tm'), (['/F1', 9], 'Tf'), ([0, 0, 0], 'rg'), ([u'This document is Classified.'], 'Tj'),
# ([0], 'g'), ([], 'ET'), ([], 'BT'), ([1, 0, 0, 1, 633.34, 34.5], 'Tm'), (['/F1', 9], 'Tf'), ([0, 0, 0], 'rg'), ([TextStringObject(text)], 'Tj'), ([0], 'g'), ([], 'ET')
if position == "bottom-center":
if not ignoreByteStringObject:
operands = ArrayObject([])
operator = NameObject("BT")
content.operations.append((operands, operator))
operands = ArrayObject([1, 0, 0, 1, 52, 34.5])
operator = NameObject("Tm")
content.operations.append((operands, operator))
operands = ArrayObject(['/F1', 9])
operator = NameObject("Tf")
content.operations.append((operands, operator))
operands = ArrayObject([0, 0, 0])
operator = NameObject("rg")
content.operations.append((operands, operator))
operands = ArrayObject([TextStringObject('Study: Classified #1')])
operator = NameObject("Tj")
content.operations.append((operands, operator))
operands = ArrayObject([0])
operator = NameObject("g")
content.operations.append((operands, operator))
operands = ArrayObject([])
operator = NameObject("ET")
content.operations.append((operands, operator))

operands = ArrayObject([])
operator = NameObject("BT")
content.operations.append((operands, operator))
operands = ArrayObject([1, 0, 0, 1, 336.1, 34.5])
operator = NameObject("Tm")
content.operations.append((operands, operator))
operands = ArrayObject(['/F1', 9])
operator = NameObject("Tf")
content.operations.append((operands, operator))
operands = ArrayObject([0, 0, 0])
operator = NameObject("rg")
content.operations.append((operands, operator))
operands = ArrayObject([TextStringObject('This document is Classified.')])
operator = NameObject("Tj")
content.operations.append((operands, operator))
operands = ArrayObject([0])
operator = NameObject("g")
content.operations.append((operands, operator))
operands = ArrayObject([])
operator = NameObject("ET")
content.operations.append((operands, operator))

operands = ArrayObject([])
operator = NameObject("BT")
content.operations.append((operands, operator))
operands = ArrayObject([1, 0, 0, 1, 633.34, 34.5])
operator = NameObject("Tm")
content.operations.append((operands, operator))
operands = ArrayObject(['/F1', 9])
operator = NameObject("Tf")
content.operations.append((operands, operator))
operands = ArrayObject([0, 0, 0])
operator = NameObject("rg")
content.operations.append((operands, operator))
operands = ArrayObject([TextStringObject(text)])
operator = NameObject("Tj")
content.operations.append((operands, operator))
operands = ArrayObject([0])
operator = NameObject("g")
content.operations.append((operands, operator))
operands = ArrayObject([])
operator = NameObject("ET")
content.operations.append((operands, operator))

else:
pass
if debug:
print content.operations

pageRef.__setitem__(NameObject('/Contents'), content)
return pageRef


Above code successfully appends the '/Content', but during the writing step it fails and shows following error:

Traceback (most recent call last):
File "main.py", line 593, in <module>
output.write(outputStream)
File "C:\Users\jsolanki\Unknown\pdfeditor\src\PyPDF2\pdf.py", line 500, in write
obj.writeToStream(stream, key)
File "C:\Users\jsolanki\Unknown\pdfeditor\src\PyPDF2\generic.py", line 783, in writeToStream
self[NameObject("/Length")] = NumberObject(len(self._data))
File "C:\Users\jsolanki\Unknown\pdfeditor\src\PyPDF2\pdf.py", line 3028, in _getData
op.writeToStream(newdata, None)
AttributeError: 'int' object has no attribute 'writeToStream'


I checked the appended content, it looked fine, am I missing something?

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