From 67e1ad64f32563b3d6da4416502eb1ff77858d37 Mon Sep 17 00:00:00 2001
From: Samuel Mondal <mondal0000@>
Date: Tue, 15 Nov 2022 15:03:20 +0100
Subject: [PATCH] docstring addition

---
 sequence_extractor/exon_concatenation.py | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/sequence_extractor/exon_concatenation.py b/sequence_extractor/exon_concatenation.py
index ccc0103..5bfd28d 100644
--- a/sequence_extractor/exon_concatenation.py
+++ b/sequence_extractor/exon_concatenation.py
@@ -1,4 +1,14 @@
-def exon_concatenation(filename):
+def exon_concatenation(
+	filename: str
+) -> list:
+	"""Concatenates all sequences in fasta file with the same transcript ID header and then outputs a list containing sequence headers (Transcript ID) and sequences that have been concatenated.
+
+	Args:
+		filename: The name of the fasta file having multiple entries for the same transcript ID.
+
+	Returns:
+		A list with headers in the even indices and their corresponding sequences in the odd indices
+	"""
 	fa = open(filename,'r')
 	lines = fa.readlines()
 	to_write_to_file = []
-- 
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