How to edit editable pdf using the pdfrw library?

Question

I been doing research on how to edit PDF using Python and i have found this article:
How to Populate Fillable PDF\'s with Python

However there is a problem on

Answer 1

I figure out that if you add NeedAppearances param you will solve your problem:

template_pdf = pdfrw.PdfReader(TEMPLATE_PATH)
template_pdf.Root.AcroForm.update(pdfrw.PdfDict(NeedAppearances=pdfrw.PdfObject('true')))