How to rename a file with a unique file name python - python-3.x

Question

I'm trying to save a .pdf file with a unique name grabbed from an sqlite database using python code.
For example, I have a file named "boringfile.pdf" but need to rename this file to a unique employee name, "max_steel.pdf"
I've looked at os.rename, os.join, uuid, pdfrw, and reportlabs for a solution.
Can anyone help me?
EDIT:
For further clarification, the database is created using sqlite3 using python 3.6. The example database would look similar to this:
employee_id first_name last_name
123456 Frank Sinatra
738323 Johnny Cash
842028 Bon Jovi
So let's say I just created Bon Jovi's employee in-processing paperwork by extracting data from the database and inputting it into my report. My report currently has the label "boringfile.pdf" but I need it to read "bon_jovi.pdf" when the completed file is saved.

Answer 1

Not sure why you are using SQLite to create a CSV file and then parse the CSV file. That seems somewhat superfluous. You could do it directly like this (no error checking, just the concept):
import sqlite3
# Connect to database
db = sqlite3.connect('sample.db')
# Extract person's full name
sql = "SELECT * FROM profiles WHERE last_name=? OR first_name=? OR employee_id=?"
c = db.cursor()
data = c.execute(sql, ('Jovi','Bon','842028'))
# Rename PDF
for row in c:
print('{0} : {1}, {2}'.format(row[0], row[1], row[2]))
PDFname = row[1] + '_' + row[0] + '.pdf'
os.rename('boringfile.pdf', PDFname)

Answer 2

I found a solution after consulting various websites and calling a few people. After creating a sqlite3 database I call the information I want and convert it into a one line .csv. I use csv.reader to read the data and use os.rename to generate the unique name, very similar to Mark's suggestion above.
def dataexport(self, *args, **kwargs):
sql = "SELECT * FROM profiles WHERE last_name=? OR first_name=? OR employee_id=?"
data = c.execute(sql, (self.last_se.get(), self.first_se.get(),
self.employeeid_se.get(), )) #this part is meant to grab
#the user input from a gui I made to make form filling
#simple
with open('output.csv', 'w') as f:
writer = csv.writer(f)
writer.writerows(data)
def renamefile(self, *args, **kwargs):
mycsv = csv.reader(open('output.csv'))
for row in mycsv:
employee_id = row[0]
first_name = row[1]
last_name = row[2]
os.rename('boringfile.pdf', first_name + '_' + last_name + '.pdf')
output.csv
After running the first function, the .csv file should be one line:
842028, Bon, Jovi