diff --git a/find_exons.py b/find_exons.py
new file mode 100644
index 0000000..285690e
--- /dev/null
+++ b/find_exons.py
@@ -0,0 +1,118 @@
+
+"""
+call_peaks uses the uncontinuous score from a bigWig file to estimate peaks
+@author: Anastasiia Petrova
+@contact: anastasiia.petrova(at)mpi-bn.mpg.de
+"""
+
+import argparse
+import sys
+import os
+import re
+import time
+import multiprocessing
+import logging
+import subprocess
+from Bio import SeqIO
+import Bio.SeqIO.FastaIO as bio
+import numpy as np
+from collections import defaultdict
+from scipy import stats
+import pyBigWig
+from statsmodels.sandbox.stats.multicomp import multipletests #for bonfferoni
+import matplotlib.pyplot as plt
+import random
+import textwrap
+
+logger = logging.getLogger('find_exons')
+logger.setLevel(logging.INFO)
+
+formatter = logging.Formatter("%(asctime)s : %(message)s", "%Y-%m-%d %H:%M")
+
+def parse_args():
+	
+	parser = argparse.ArgumentParser(prog = '', description = textwrap.dedent('''                           
+
+		This script produces plots and a tsv-file to show the number of exons for the list of genes of interest.
+		'''), epilog='That is what you need to make this script work for you. Enjoy it')
+	
+	required_arguments = parser.add_argument_group('required arguments')
+	required_arguments.add_argument('--gtf_genes', help='a .gtf file with genes', required=True)
+	required_arguments.add_argument('--gtf_exons', help='a .gtf file with exons', required=True)
+	required_arguments.add_argument('--gene_list', help='names of genes of interest', required=True)
+
+	#all other arguments are optional
+	parser.add_argument('--output_directory',  default='output', const='output', nargs='?', help='output directory, by default ./output/')
+	parser.add_argument('--silent', action='store_true', help='while working with data write the information only into ./call_peaks_log.txt')
+	args = parser.parse_args()
+
+	return args
+
+def check_directory(directory):
+	if not os.path.exists(directory):
+		os.makedirs(directory)
+		#logger.info('a new directory ' + directory + ' was created')
+		print('a new directory ' + directory + ' was created')
+
+def remove_file(file):
+	if os.path.isfile(file):
+		os.remove(file)
+
+def make_name_from_path(full_path, output_directory, ending):
+	return os.path.join(output_directory, get_name_from_path(full_path) + ending)
+	
+def get_name_from_path(full_path):
+	return os.path.splitext(os.path.basename(full_path))[0]
+
+def check_existing_input_files(args):
+
+	if not os.path.isfile(args.gtf_genes):
+		#logger.info('please make sure the both files with conditions to compare exist')
+		print('please make sure the .gtf file with genes exists')
+		sys.exit()
+
+	if not os.path.isfile(args.gtf_exons):
+		#logger.info('please make sure the both files with conditions to compare exist')
+		print('please make sure the .gtf file with exons exists')
+		sys.exit()
+
+	if not os.path.isfile(args.gene_list):
+		print('please make sure the file with genes of interest exists')
+		sys.exit()
+
+def main():
+
+	start = time.time()
+
+	args = parse_args()
+
+	check_existing_input_files(args)
+
+	#check if there is an existing directory that user gave as input, otherwise create this directory from the path provided from the user
+	check_directory(args.output_directory)
+
+	fh = logging.FileHandler(os.path.join(args.output_directory, "find_exons_log.txt"))
+	fh.setLevel(logging.INFO)
+	fh.setFormatter(formatter)
+	logger.addHandler(fh)
+
+	ch = logging.StreamHandler()
+	ch.setLevel(logging.INFO)
+	ch.setFormatter(formatter)
+	logger.addHandler(ch)
+
+	#if user do not want to see the information about the status of jobs, remove the handler, that writes to the terminal
+	if args.silent:
+		logger.removeHandler(ch)
+
+	logger.info("find_exons.py was called using these parameters:")
+	logger.info(vars(args))
+
+	#logger.info("find_exons needed %s seconds to generate the output" % (time.time() - start))
+	
+	for handler in logger.handlers:
+		handler.close()
+		logger.removeFilter(handler)
+	
+if __name__ == "__main__":
+	main()
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