diff --git a/src/cli.py b/src/cli.py
--- a/src/cli.py
+++ b/src/cli.py
@@ -6,47 +6,47 @@ from shamira import generate, reconstruc
 
 
 def run():
-	parser=ArgumentParser()
-	subparsers=parser.add_subparsers()
+	parser = ArgumentParser()
+	subparsers = parser.add_subparsers()
 
 	buildSplitParser(subparsers.add_parser("split"))
 	buildJoinParser(subparsers.add_parser("join"))
 
 	parser.set_defaults(func=lambda _: parser.error("missing command"))
 
-	args=parser.parse_args()
+	args = parser.parse_args()
 	args.func(args)
 
 
 def buildSplitParser(parser):
-	parser.add_argument("-k",type=int,required=True,help="number of shares necessary for recovering the secret")
-	parser.add_argument("-n",type=int,required=True,help="number of generated shares")
+	parser.add_argument("-k", type=int, required=True, help="number of shares necessary for recovering the secret")
+	parser.add_argument("-n", type=int, required=True, help="number of generated shares")
 
 	encoding=parser.add_mutually_exclusive_group()
-	encoding.add_argument("--hex",action="store_true",help="encode shares' bytes as a hexadecimal string")
-	encoding.add_argument("--b32",action="store_true",help="encode shares' bytes as a base32 string")
-	encoding.add_argument("--b64",action="store_true",help="encode shares' bytes as a base64 string")
+	encoding.add_argument("--hex", action="store_true", help="encode shares' bytes as a hexadecimal string")
+	encoding.add_argument("--b32", action="store_true", help="encode shares' bytes as a base32 string")
+	encoding.add_argument("--b64", action="store_true", help="encode shares' bytes as a base64 string")
 
-	parser.add_argument("secret",help="secret to be parsed")
+	parser.add_argument("secret", help="secret to be parsed")
 	parser.set_defaults(func=_generate)
 	
 
 def buildJoinParser(parser):
 	encoding=parser.add_mutually_exclusive_group()
-	encoding.add_argument("--hex",action="store_true",help="decode shares' bytes from a hexadecimal string")
-	encoding.add_argument("--b32",action="store_true",help="decode shares' bytes from a base32 string")
-	encoding.add_argument("--b64",action="store_true",help="decode shares' bytes from a base64 string")
+	encoding.add_argument("--hex", action="store_true", help="decode shares' bytes from a hexadecimal string")
+	encoding.add_argument("--b32", action="store_true", help="decode shares' bytes from a base32 string")
+	encoding.add_argument("--b64", action="store_true", help="decode shares' bytes from a base64 string")
 
-	parser.add_argument("-r","--raw",action="store_true",help="return secret as raw bytes")
-	parser.add_argument("share",nargs="+",help="shares to be joined")
+	parser.add_argument("-r", "--raw", action="store_true", help="return secret as raw bytes")
+	parser.add_argument("share", nargs="+", help="shares to be joined")
 	parser.set_defaults(func=_reconstruct)
 
 
 def _generate(args):
-	encoding=getEncoding(args) or "b32"
+	encoding = getEncoding(args) or "b32"
 
 	try:
-		shares=generate(args.secret,args.k,args.n,encoding)
+		shares = generate(args.secret, args.k, args.n, encoding)
 		for s in shares:
 			print(s)
 	except SException as e:
@@ -54,9 +54,9 @@ def _generate(args):
 
 
 def _reconstruct(args):
-	encoding=getEncoding(args)
+	encoding = getEncoding(args)
 	try:
-		print(reconstruct(*args.share,encoding=encoding,raw=args.raw))
+		print(reconstruct(*args.share, encoding=encoding, raw=args.raw))
 	except SException as e:
 		print(e)