First install the pdfrw
library.
pip install pdfrw
Then use the code block below to udpate the title. You'll need to edit the code to use the correct filepath for your resume and your desired title.
import pdfrw
# Read the existing pdf
document = pdfrw.PdfReader('my_resume.pdf')
# Change the title (or any other metadata)
document.Info.Title = "A new title"
# save the file
pdfrw.PdfWriter('my_resume.pdf', trailer=document).write()