Remove dependency 'future' to avoid CVE-2025-50817

setup.py

@@ -21,18 +21,13 @@
     author_email="yurtaev.egor+versionfield@gmail.com",
     packages=["versionfield"],
     include_package_data=True,
-    install_requires=[
-        "future>=0.16.0",
-    ],
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "Framework :: Django",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: BSD License",
         "Operating System :: OS Independent",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.2",
         "Programming Language :: Python :: 3.3",

versionfield/__init__.py

@@ -1,7 +1,3 @@
-from builtins import str
-from past.builtins import basestring
-from future.utils import python_2_unicode_compatible
-
 import django
 from django.db import models
 from django.core.exceptions import ValidationError
@@ -20,7 +16,7 @@ def to_python(self, value):
             if isinstance(value, Version):
                 return int(value)
 
-            if isinstance(value, basestring):
+            if isinstance(value, str):
                 return Version(value, self.number_bits)
 
             if value is None:
@@ -33,7 +29,7 @@ def from_db_value(self, value, *args, **kwargs):
             if isinstance(value, Version):
                 return int(value)
 
-            if isinstance(value, basestring):
+            if isinstance(value, str):
                 return Version(value, self.number_bits)
 
             if value is None:
@@ -45,7 +41,7 @@ def to_python(self, value):
             if isinstance(value, Version):
                 return int(value)
 
-            if isinstance(value, basestring):
+            if isinstance(value, str):
                 return Version(value, self.number_bits)
 
             if value is None:
@@ -66,7 +62,7 @@ def __init__(self, number_bits=DEFAULT_NUMBER_BITS, *args, **kwargs):
         super(VersionField, self).__init__(*args, **kwargs)
 
     def get_prep_value(self, value):
-        if isinstance(value, basestring):
+        if isinstance(value, str):
             try:
                 return int(Version(value, self.number_bits))
             except ValueError:
@@ -86,7 +82,6 @@ def formfield(self, **kwargs):
         defaults.update(kwargs)
         return super(VersionField, self).formfield(**defaults)
 
-    @python_2_unicode_compatible
     def __str__(self, value):
         return str(value)
 

versionfield/version.py

@@ -1,8 +1,4 @@
 # coding: utf8
-from builtins import str
-from past.builtins import basestring
-from future.utils import python_2_unicode_compatible
-
 from .utils import convert_version_string_to_int, convert_version_int_to_string
 
 
@@ -15,7 +11,6 @@ def __init__(self, string, number_bits):
         self.number_bits = number_bits
         self.internal_integer = convert_version_string_to_int(string, number_bits)
 
-    @python_2_unicode_compatible
     def __str__(self):
         return str(convert_version_int_to_string(self.internal_integer, self.number_bits))
 
@@ -28,7 +23,7 @@ def __int__(self):
     def __eq__(self, other):
         if not other:
             return False  # we are obviously a valid Version, but 'other' isn't
-        if isinstance(other, basestring):
+        if isinstance(other, str):
             return self == Version(other, self.number_bits)
         else:
             return int(self) == int(other)