Create tar archive without repetitive root name - python-3.x

Question

I am creating a tar archive with tarfile module in Python. All ok, but I get a gzip file named archive.gz which containa an archive named archive.gz too. How can I make the archive without repetitive name?
here the code:
import tarfile
import os
src_archive = 'C:\\source_archive'
dest_archive = 'C:\\archive.tar.gz'
def make_tarfile(output_filename, source_dir):
with tarfile.open(output_filename, "w:gz") as tar:
tar.add(source_dir, arcname=os.path.basename(source_dir))
if __name__ == "__main__":
print('creating archive')
make_tarfile(dest_archive,src_archive)

Answer 1

I had a similar issue, what I did was use UUID to randomly generate a string and append that to the end of the file (which requires a unique name)
Another thing you could do is use a database, and append name by index number.
Python 3.7.3 (default, Mar 27 2019, 09:23:15)
[Clang 10.0.1 (clang-1001.0.46.3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import uuid
>>> src_archive = f'C:\\source_archive-{str(uuid.uuid4()).split("-")[0]}'
>>> print(src_archive)
C:\source_archive-674fce6b