diff --git a/Library/firehose.py b/Library/firehose.py
index 075c821..26f0b37 100755
--- a/Library/firehose.py
+++ b/Library/firehose.py
@@ -3,6 +3,7 @@ import platform
 import time
 import json
 from struct import unpack
+from binascii import hexlify
 from Library.utils import *
 from Library.gpt import gpt
 from Library.sparse import QCSparse
diff --git a/Library/gpt.py b/Library/gpt.py
index 5f071a0..97642ca 100755
--- a/Library/gpt.py
+++ b/Library/gpt.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-import binascii
+from binascii import hexlify
 from Library.utils import *
 
 
@@ -179,7 +179,7 @@ class gpt(metaclass=LogBase):
             guid2 = struct.unpack("<H", partentry["unique"][0x4:0x6])[0]
             guid3 = struct.unpack("<H", partentry["unique"][0x6:0x8])[0]
             guid4 = struct.unpack("<H", partentry["unique"][0x8:0xA])[0]
-            guid5 = binascii.hexlify(partentry["unique"][0xA:0x10]).decode('utf-8')
+            guid5 = hexlify(partentry["unique"][0xA:0x10]).decode('utf-8')
             pa.unique = "{:08x}-{:04x}-{:04x}-{:04x}-{}".format(guid1, guid2, guid3, guid4, guid5)
             pa.sector = partentry["first_lba"]
             pa.sectors = partentry["last_lba"] - partentry["first_lba"] + 1
diff --git a/Library/hdlc.py b/Library/hdlc.py
index 95bc415..8bb5555 100755
--- a/Library/hdlc.py
+++ b/Library/hdlc.py
@@ -120,7 +120,7 @@ class hdlc:
 
     def receive_reply(self,timeout=None):
         replybuf = bytearray()
-        if timeout==None:
+        if timeout is None:
             timeout=self.timeout
         tmp = self.cdc.read(MAX_PACKET_LEN, timeout)
         if tmp == bytearray():
@@ -155,7 +155,7 @@ class hdlc:
 
     def receive_reply_nocrc(self,timeout=None):
         replybuf = bytearray()
-        if timeout==None:
+        if timeout is None:
             timeout=self.timeout
         tmp = self.cdc.read(MAX_PACKET_LEN, timeout)
         if tmp == bytearray():
diff --git a/Library/usblib.py b/Library/usblib.py
index 0ec29e9..ca2260c 100755
--- a/Library/usblib.py
+++ b/Library/usblib.py
@@ -6,6 +6,7 @@ import usb.util
 import time
 import inspect
 from Library.utils import *
+from binascii import hexlify
 
 USB_DIR_OUT = 0  # to device
 USB_DIR_IN = 0x80  # to host
diff --git a/Library/utils.py b/Library/utils.py
index a662437..5f64050 100755
--- a/Library/utils.py
+++ b/Library/utils.py
@@ -8,7 +8,6 @@ import shutil
 import stat
 import colorama
 import copy
-from binascii import hexlify
 
 try:
     from capstone import *
diff --git a/Loaders/beagle_to_loader.py b/Loaders/beagle_to_loader.py
index 8e48045..42c31a7 100755
--- a/Loaders/beagle_to_loader.py
+++ b/Loaders/beagle_to_loader.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 # Beagle to EDL Loader (c) B.Kerler 2021
 
-import os,sys
+import sys
 from struct import unpack
 
 def main():
diff --git a/Loaders/fhloaderparse.py b/Loaders/fhloaderparse.py
index fbc6734..0ff93da 100755
--- a/Loaders/fhloaderparse.py
+++ b/Loaders/fhloaderparse.py
@@ -1,9 +1,8 @@
 #!/usr/bin/env python3
-import os
 import sys
 from os import walk
 import hashlib
-from struct import unpack, pack
+from struct import unpack
 from shutil import copyfile
 try:
     from Library.utils import elf
diff --git a/edl.py b/edl.py
index 86ae041..022a33b 100755
--- a/edl.py
+++ b/edl.py
@@ -254,7 +254,7 @@ class main(metaclass=LogBase):
                 self.exit()
         # print((mode, resp))
         if mode == "sahara":
-            if resp==None:
+            if resp is None:
                 if mode=="sahara":
                     print("Sahara in error state, resetting ...")
                     self.sahara.cmd_reset()
diff --git a/modem/diag.py b/modem/diag.py
index f016cbb..f7a0d08 100755
--- a/modem/diag.py
+++ b/modem/diag.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
-'''
+"""
 Licensed under MIT License, (c) B. Kerler 2018-2019
-'''
+"""
 default_vid_pid = [
     [0x2c7c, 0x0125, -1],  # Quectel EC25
     [0x1199, 0x9071, -1],  # Sierra Wireless
@@ -17,8 +17,6 @@ default_vid_pid = [
 
 ]
 
-import sys
-import os
 import argparse
 import json
 import logging
@@ -649,7 +647,7 @@ class qcdiag(metaclass=LogBase):
         if len(res) > 0:
             if res[0] == 0x27:
                 res, nvitem = self.read_nvitem(item)
-                if res == False:
+                if not res:
                     print(f"Error while writing nvitem {hex(item)} data, %s" % data)
                 else:
                     if nvitem.data != data:
diff --git a/requirements.txt b/requirements.txt
index 68b84a9..c08275e 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,4 +6,7 @@ pylzma>=0.5.0
 pycryptodome
 lxml>=4.6.1
 colorama
+usb
+capstone
+keystone-engine