WAP to fetch a SwissProt entry stored in a file

Sure, here is a simple Python script using Biopython's Bio.SeqIO module to fetch a SwissProt entry stored in a file:

from Bio import SeqIO

def fetch_swissprot_entry(file_path, entry_id):
    # Parse the SwissProt file
    for record in SeqIO.parse(file_path, "swiss"):
        # Check if the current record's ID matches the entry ID
        if record.id == entry_id:
            return record

    # If no matching entry was found, return None
    return None

# Use the function
entry = fetch_swissprot_entry("path_to_your_file", "your_entry_id")
if entry is not None:
    print("Entry found:", entry)
else:
    print("No entry found with the given ID.")

In this script, replace "path_to_your_file" with the path to your SwissProt file and "your_entry_id" with the ID of the entry you want to fetch. The script will print the entry if it is found, or a message indicating that no entry was found otherwise.

Please note that you need to have Biopython installed in your Python environment to run this script. If it's not installed, you can add it using pip:

pip install biopython