From 4aac55ec7716471091191d66229ec6bab907cac6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Bonhomme?= <cedric@cedricbonhomme.org>
Date: Mon, 1 Nov 2021 13:52:16 +0100
Subject: [PATCH] chg: [core ] various minor fixes.

---
 pyproject.toml                     | 2 +-
 stegano/exifHeader/exifHeader.py   | 4 ++--
 stegano/lsbset/lsbset.py           | 2 +-
 stegano/steganalysis/statistics.py | 5 +----
 4 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 9bfbf7e..9f67c27 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,9 +22,9 @@ classifiers = [
     "Intended Audience :: Science/Research",
     "Topic :: Security",
     "Operating System :: OS Independent",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
     "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)"
 ]
 
diff --git a/stegano/exifHeader/exifHeader.py b/stegano/exifHeader/exifHeader.py
index 8918331..1b67d9d 100644
--- a/stegano/exifHeader/exifHeader.py
+++ b/stegano/exifHeader/exifHeader.py
@@ -37,13 +37,13 @@ def hide(
     from zlib import compress
     from base64 import b64encode
 
-    if secret_file != None:
+    if secret_file is not None:
         with open(secret_file, "r") as f:
             secret_message = f.read()
 
     try:
         text = compress(b64encode(bytes(secret_message, "utf-8")))
-    except:
+    except Exception:
         text = compress(b64encode(secret_message))
 
     img = tools.open_image(input_image_file)
diff --git a/stegano/lsbset/lsbset.py b/stegano/lsbset/lsbset.py
index 3a9583e..2d0230b 100644
--- a/stegano/lsbset/lsbset.py
+++ b/stegano/lsbset/lsbset.py
@@ -128,7 +128,7 @@ def reveal(
             if count == tools.ENCODINGS[encoding]:
                 bitab.append(chr(buff))
                 buff, count = 0, 0
-                if bitab[-1] == ":" and limit == None:
+                if bitab[-1] == ":" and limit is None:
                     if "".join(bitab[:-1]).isdigit():
                         limit = int("".join(bitab[:-1]))
                     else:
diff --git a/stegano/steganalysis/statistics.py b/stegano/steganalysis/statistics.py
index dde980e..4e90b3f 100644
--- a/stegano/steganalysis/statistics.py
+++ b/stegano/steganalysis/statistics.py
@@ -22,13 +22,11 @@
 __author__ = "Cedric Bonhomme"
 __version__ = "$Revision: 0.2 $"
 __date__ = "$Date: 2010/10/01 $"
-__revision__ = "$Date: 2016/08/26 $"
+__revision__ = "$Date: 2021/11/01 $"
 __license__ = "GPLv3"
 
 import typing
-import operator
 
-from PIL import Image
 from collections import Counter
 from collections import OrderedDict
 
@@ -37,7 +35,6 @@ def steganalyse(img):
     """
     Steganlysis of the LSB technique.
     """
-    encoded = img.copy()
     width, height = img.size
     colours_counter = Counter()  # type: typing.Counter[int]
     for row in range(height):