{"library":"six","title":"six","description":"six is a Python 2 and 3 compatibility library that provides utility functions for smoothing over differences between the two Python versions, enabling codebases to run on both without modification. It consists of a single Python file (six.py) covering string types, integer types, standard library moves, metaclass helpers, and more. Current version is 1.17.0, released December 2024. The project is in maintenance mode: Python 2 reached end-of-life in 2020, and in 2024 it is entirely normal for projects to support only Python 3, so new code should not take a dependency on six — it is primarily relevant for maintaining legacy dual-version codebases or as a transitive dependency.","language":"python","status":"maintenance","last_verified":"Tue May 19","install":{"commands":["pip install six"],"cli":null},"imports":["import six","import six\nisinstance(value, six.string_types)","from six.moves import urllib\nfrom six.moves import range\nfrom six.moves import configparser","from six import with_metaclass\nclass MyClass(with_metaclass(Meta, Base)): pass","from six import add_metaclass\n@add_metaclass(Meta)\nclass MyClass(object): pass","from six import reraise\nreraise(tp, value, tb=None)","from six.moves.urllib.parse import urlencode\nfrom six.moves.urllib.request import urlopen"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"import six\nfrom six.moves import urllib\nfrom six.moves.urllib.parse import urlencode\n\n# Version guard\nif six.PY2:\n    print(\"Running on Python 2\")\nelse:\n    print(\"Running on Python 3\")\n\n# Cross-version type check\nvalue = u\"hello\"\nassert isinstance(value, six.text_type)        # unicode on Py2, str on Py3\nassert isinstance(b\"bytes\", six.binary_type)  # str on Py2, bytes on Py3\nassert isinstance(value, six.string_types)    # catches both str/unicode on Py2\n\n# Stdlib move: urllib.parse.urlencode works on both versions\nparams = urlencode({\"key\": \"value\", \"foo\": \"bar\"})\nprint(\"Encoded:\", params)\n\n# Integer types (int + long on Py2, int only on Py3)\nassert isinstance(42, six.integer_types)\n\n# Metaclass compatibility\nfrom six import with_metaclass\nclass Meta(type):\n    pass\nclass MyBase(with_metaclass(Meta, object)):\n    pass\nprint(\"Metaclass:\", type(MyBase))\n","lang":"python","description":"Demonstrate the most common six patterns: version guards, type checks, and 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