Performing phylogenetics requires the downloading and manipulation of several files. Downloading hundreds of GenBank and/or FASTA files from online can take a long time and doing one by one is almost impossible. Phylophun is a collection of python scripts that can be used to download and manipulate files in order for you to conduct phylogenetic analysis.
If you use pip you can install phylophun:
pip install phylophun
To run download GenBank or FASTA files using phylophun:
phylophun get_files example.gb
phylophun get_files example.fa