a simpe script for slicing the fasta sequence, for example, you can use this to infer siRNA with a sequence from cds.
its just a small script for my npy's article https://doi.org/10.1111/nph.18595
optional arguments
-h, --help show this help message and exit
-i I input fasta file name
-o O output fasta file name
-w W window size
Example:
python slide.py -i test.fa -o result.fa -w 21