update supported python versions

.github/workflows/pythonpackage.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8, 3.9]
 
     steps:
     - uses: actions/checkout@v1

.travis.yml

@@ -3,10 +3,10 @@
 language: python
 
 python:
+  - "3.9"
   - "3.8"
   - "3.7"
   - "3.6"
-  - "3.5"
   - "pypy3"
 
 install:

HISTORY.rst

@@ -2,7 +2,9 @@
 tnefparse 1.4.0 (unreleased)
 =============================
 
-- drop Python2 support
+- drop Python 2 support
+- drop Python 3.5 support (jugmac00)
+- add Python 3.9 support (jugmac00)
 
 tnefparse 1.3.1 (2020-09-30)
 =============================

README.rst

@@ -14,7 +14,7 @@ tnefparse - TNEF decoding and attachment extraction
   :target: https://pypi.org/project/tnefparse/
 
 This is a pure-python library for decoding Microsoft's Transport Neutral Encapsulation Format (TNEF), for Python
-versions 3.5+ and PyPy3. The last version to support Python2 was 1.3.1. For more information on TNEF, see for example 
+versions 3.6+ and PyPy3. The last version to support Python2 was 1.3.1. For more information on TNEF, see for example 
 `wikipedia <http://en.wikipedia.org/wiki/Transport_Neutral_Encapsulation_Format>`_. The full TNEF specification
 is also available as a `PDF download <https://interoperability.blob.core.windows.net/files/MS-OXTNEF/[MS-OXTNEF].pdf>`_.
 

scripts/make_props.py

@@ -1,5 +1,3 @@
-# -*- coding: future_fstrings -*-
-
 """
 Tool to regenerate tnefparse/properties.py
 
@@ -13,7 +11,7 @@
 
 properties = OrderedDict()
 
-with open('data/properties.txt', 'r') as props:
+with open('data/properties.txt') as props:
     for prop in props:
         prop = prop.strip()
         if not prop or prop.startswith('#'):

setup.py

@@ -19,10 +19,12 @@
           'Intended Audience :: End Users/Desktop',
           'Programming Language :: Python',
           'Programming Language :: Python :: 3',
-          'Programming Language :: Python :: 3.5',
           'Programming Language :: Python :: 3.6',
           'Programming Language :: Python :: 3.7',
           'Programming Language :: Python :: 3.8',
+          'Programming Language :: Python :: 3.9',
+          'Programming Language :: Python :: Implementation :: CPython',
+          'Programming Language :: Python :: Implementation :: PyPy',
           'Development Status :: 5 - Production/Stable',
           'Environment :: Console',
       ],

tests/test_cmdline.py

@@ -62,5 +62,5 @@ def test_dump(script_runner):
     ret = script_runner.run('tnefparse', '-d', 'tests/examples/two-files.tnef')
     assert ret.success
     dump = json.loads(ret.stdout)
-    assert sorted(list(dump.keys())) == [u'attachments', u'attributes', u'extended_attributes']
+    assert sorted(list(dump.keys())) == ['attachments', 'attributes', 'extended_attributes']
     assert len(dump['attachments']) == 2

tests/test_decoding.py

@@ -47,7 +47,7 @@
     ("unicode-mapi-attr-name.tnef", 0x69ec,
      ['spaconsole2.cfg', 'image001.png', 'image002.png', 'image003.png'], 'htmlbody', []),
     ("unicode-mapi-attr.tnef", 0x408f, ['example.dat'], 'body', []),
-    ("umlaut.tnef", 0xa2e, ['TBZ PARIV GmbH.jpg', 'image003.jpg', u'UmlautAnhang-\xe4\xfc\xf6.txt'], 'rtfbody', []),
+    ("umlaut.tnef", 0xa2e, ['TBZ PARIV GmbH.jpg', 'image003.jpg', 'UmlautAnhang-\xe4\xfc\xf6.txt'], 'rtfbody', []),
     ("bad_checksum.tnef", 0x5784, ['image001.png'], 'body', []),
 )
 

tnefparse/codepage.py

@@ -8,7 +8,7 @@
 FALLBACK = 'cp1252'
 
 
-class Codepage(object):
+class Codepage:
     def __init__(self, codepage):
         self.cp = codepage
 

tnefparse/mapi.py

@@ -1,7 +1,6 @@
 "MAPI attribute definitions"
 
 import logging
-import sys
 from decimal import Decimal
 
 from .util import (
@@ -19,9 +18,6 @@
 )
 from . import properties
 
-if sys.hexversion < 0x03000000:
-    range = xrange  # noqa: F821
-
 logger = logging.getLogger("mapi-decode")
 
 
@@ -166,7 +162,7 @@ def parse_property(data, offset, attr_name, attr_type, codepage, is_multi):
     return attr_data, offset
 
 
-class TNEFMAPI_Attribute(object):
+class TNEFMAPI_Attribute:
     """represents a mapi attribute
 
     Property reference docs:

tnefparse/tnef.py

@@ -13,7 +13,7 @@
 logger = logging.getLogger(__package__)
 
 
-class TNEFObject(object):
+class TNEFObject:
     "a TNEF object that may contain a property and an attachment"
     PTYPE_CLASS  = 0x1  # noqa: E221
     PTYPE_TIME   = 0x3  # noqa: E221
@@ -31,7 +31,7 @@ def __init__(self, data, do_checksum=False):
         if do_checksum:
             calc_checksum = checksum(self.data)
             if calc_checksum != att_checksum:
-                logger.warning("Checksum: %s != %s" % (calc_checksum, att_checksum))
+                logger.warning(f"Checksum: {calc_checksum} != {att_checksum}")
         else:
             calc_checksum = att_checksum
 
@@ -43,10 +43,10 @@ def name_str(self):
         return TNEF.codes.get(self.name)
 
     def __str__(self):
-        return "<%s '%s'>" % (self.__class__.__name__, self.name_str)
+        return f"<{self.__class__.__name__} '{self.name_str}'>"
 
 
-class TNEFAttachment(object):
+class TNEFAttachment:
     "a TNEF attachment"
 
     SZMAPI_UNSPECIFIED = 0x0000  # MAPI Unspecified
@@ -143,7 +143,7 @@ def __str__(self):
         return "<ATTCH:'%s'>" % self.long_filename()
 
 
-class TNEF(object):
+class TNEF:
     "main decoder class - start by using this"
 
     TNEF_SIGNATURE = 0x223E9F78
@@ -336,7 +336,7 @@ def rtfbody(self):
 
     def __str__(self):
         atts = (", %i attachments" % len(self.attachments)) if self.attachments else ''
-        return "<%s:0x%2.2x%s>" % (self.__class__.__name__, self.key, atts)
+        return f"<{self.__class__.__name__}:0x{self.key:2.2x}{atts}>"
 
     def dump(self, force_strings=False):
         def get_data(a):
@@ -390,7 +390,7 @@ def triples(data):
     return sender.rstrip(b'\x00'), etype, email.rstrip(b'\x00')
 
 
-def to_zip(data, default_name=u'no-name', deflate=True):
+def to_zip(data, default_name='no-name', deflate=True):
     "Convert attachments in TNEF data to zip format. Accepts and returns str type."
     # Parse the TNEF data
     tnef = TNEF(data)

tnefparse/util.py

@@ -2,14 +2,10 @@
 """
 import logging
 import struct
-import sys
 import uuid
 import warnings
 from datetime import datetime, timedelta
 
-if sys.hexversion < 0x03000000:
-    range = xrange  # noqa: F821
-
 logger = logging.getLogger(__package__)
 
 
@@ -64,26 +60,11 @@ def typtime(byte_arr, offset=0):
     return datetime(*parts)
 
 
-def bytes_to_int_py3(byte_arr):
-    "transform multi-byte values into integers, python3 version"
+def bytes_to_int(byte_arr):
+    "transform multi-byte values into integers"
     return int.from_bytes(byte_arr, byteorder="little", signed=False)
 
 
-def bytes_to_int_py2(byte_arr):
-    "transform multi-byte values into integers, python2 version"
-    n = num = 0
-    for b in byte_arr:
-        num += ord(b) << n
-        n += 8
-    return num
-
-
-if sys.hexversion > 0x03000000:
-    bytes_to_int = bytes_to_int_py3
-else:
-    bytes_to_int = bytes_to_int_py2
-
-
 def checksum(data):
     return sum(bytearray(data)) & 0xFFFF
 

tox.ini

@@ -1,6 +1,5 @@
 [tox]
-# Python 3.5 has TLS issues on OSX at least
-envlist = py36, py37, py38, coverage, check-manifest
+envlist = py36, py37, py38, py39, coverage, check-manifest, flake8
 
 [testenv]
 # install the `optional` requirements