--- a/env/lib/python3.7/site-packages/libfuturize/main.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,322 +0,0 @@
-"""
-futurize: automatic conversion to clean 2/3 code using ``python-future``
-======================================================================
-
-Like Armin Ronacher's modernize.py, ``futurize`` attempts to produce clean
-standard Python 3 code that runs on both Py2 and Py3.
-
-One pass
---------
-
-Use it like this on Python 2 code:
-
-  $ futurize --verbose mypython2script.py
-
-This will attempt to port the code to standard Py3 code that also
-provides Py2 compatibility with the help of the right imports from
-``future``.
-
-To write changes to the files, use the -w flag.
-
-Two stages
-----------
-
-The ``futurize`` script can also be called in two separate stages. First:
-
-  $ futurize --stage1 mypython2script.py
-
-This produces more modern Python 2 code that is not yet compatible with Python
-3. The tests should still run and the diff should be uncontroversial to apply to
-most Python projects that are willing to drop support for Python 2.5 and lower.
-
-After this, the recommended approach is to explicitly mark all strings that must
-be byte-strings with a b'' prefix and all text (unicode) strings with a u''
-prefix, and then invoke the second stage of Python 2 to 2/3 conversion with::
-
-  $ futurize --stage2 mypython2script.py
-
-Stage 2 adds a dependency on ``future``. It converts most remaining Python
-2-specific code to Python 3 code and adds appropriate imports from ``future``
-to restore Py2 support.
-
-The command above leaves all unadorned string literals as native strings
-(byte-strings on Py2, unicode strings on Py3). If instead you would like all
-unadorned string literals to be promoted to unicode, you can also pass this
-flag:
-
-  $ futurize --stage2 --unicode-literals mypython2script.py
-
-This adds the declaration ``from __future__ import unicode_literals`` to the
-top of each file, which implicitly declares all unadorned string literals to be
-unicode strings (``unicode`` on Py2).
-
-All imports
------------
-
-The --all-imports option forces adding all ``__future__`` imports,
-``builtins`` imports, and standard library aliases, even if they don't
-seem necessary for the current state of each module. (This can simplify
-testing, and can reduce the need to think about Py2 compatibility when editing
-the code further.)
-
-"""
-
-from __future__ import (absolute_import, print_function, unicode_literals)
-import future.utils
-from future import __version__
-
-import sys
-import logging
-import optparse
-import os
-
-from lib2to3.main import warn, StdoutRefactoringTool
-from lib2to3 import refactor
-
-from libfuturize.fixes import (lib2to3_fix_names_stage1,
-                               lib2to3_fix_names_stage2,
-                               libfuturize_fix_names_stage1,
-                               libfuturize_fix_names_stage2)
-
-fixer_pkg = 'libfuturize.fixes'
-
-
-def main(args=None):
-    """Main program.
-
-    Args:
-        fixer_pkg: the name of a package where the fixers are located.
-        args: optional; a list of command line arguments. If omitted,
-              sys.argv[1:] is used.
-
-    Returns a suggested exit status (0, 1, 2).
-    """
-
-    # Set up option parser
-    parser = optparse.OptionParser(usage="futurize [options] file|dir ...")
-    parser.add_option("-V", "--version", action="store_true",
-                      help="Report the version number of futurize")
-    parser.add_option("-a", "--all-imports", action="store_true",
-                      help="Add all __future__ and future imports to each module")
-    parser.add_option("-1", "--stage1", action="store_true",
-                      help="Modernize Python 2 code only; no compatibility with Python 3 (or dependency on ``future``)")
-    parser.add_option("-2", "--stage2", action="store_true",
-                      help="Take modernized (stage1) code and add a dependency on ``future`` to provide Py3 compatibility.")
-    parser.add_option("-0", "--both-stages", action="store_true",
-                      help="Apply both stages 1 and 2")
-    parser.add_option("-u", "--unicode-literals", action="store_true",
-                      help="Add ``from __future__ import unicode_literals`` to implicitly convert all unadorned string literals '' into unicode strings")
-    parser.add_option("-f", "--fix", action="append", default=[],
-                      help="Each FIX specifies a transformation; default: all.\nEither use '-f division -f metaclass' etc. or use the fully-qualified module name: '-f lib2to3.fixes.fix_types -f libfuturize.fixes.fix_unicode_keep_u'")
-    parser.add_option("-j", "--processes", action="store", default=1,
-                      type="int", help="Run 2to3 concurrently")
-    parser.add_option("-x", "--nofix", action="append", default=[],
-                      help="Prevent a fixer from being run.")
-    parser.add_option("-l", "--list-fixes", action="store_true",
-                      help="List available transformations")
-    parser.add_option("-p", "--print-function", action="store_true",
-                      help="Modify the grammar so that print() is a function")
-    parser.add_option("-v", "--verbose", action="store_true",
-                      help="More verbose logging")
-    parser.add_option("--no-diffs", action="store_true",
-                      help="Don't show diffs of the refactoring")
-    parser.add_option("-w", "--write", action="store_true",
-                      help="Write back modified files")
-    parser.add_option("-n", "--nobackups", action="store_true", default=False,
-                      help="Don't write backups for modified files.")
-    parser.add_option("-o", "--output-dir", action="store", type="str",
-                      default="", help="Put output files in this directory "
-                      "instead of overwriting the input files.  Requires -n. "
-                      "For Python >= 2.7 only.")
-    parser.add_option("-W", "--write-unchanged-files", action="store_true",
-                      help="Also write files even if no changes were required"
-                      " (useful with --output-dir); implies -w.")
-    parser.add_option("--add-suffix", action="store", type="str", default="",
-                      help="Append this string to all output filenames."
-                      " Requires -n if non-empty. For Python >= 2.7 only."
-                      "ex: --add-suffix='3' will generate .py3 files.")
-
-    # Parse command line arguments
-    flags = {}
-    refactor_stdin = False
-    options, args = parser.parse_args(args)
-
-    if options.write_unchanged_files:
-        flags["write_unchanged_files"] = True
-        if not options.write:
-            warn("--write-unchanged-files/-W implies -w.")
-        options.write = True
-    # If we allowed these, the original files would be renamed to backup names
-    # but not replaced.
-    if options.output_dir and not options.nobackups:
-        parser.error("Can't use --output-dir/-o without -n.")
-    if options.add_suffix and not options.nobackups:
-        parser.error("Can't use --add-suffix without -n.")
-
-    if not options.write and options.no_diffs:
-        warn("not writing files and not printing diffs; that's not very useful")
-    if not options.write and options.nobackups:
-        parser.error("Can't use -n without -w")
-    if "-" in args:
-        refactor_stdin = True
-        if options.write:
-            print("Can't write to stdin.", file=sys.stderr)
-            return 2
-    # Is this ever necessary?
-    if options.print_function:
-        flags["print_function"] = True
-
-    # Set up logging handler
-    level = logging.DEBUG if options.verbose else logging.INFO
-    logging.basicConfig(format='%(name)s: %(message)s', level=level)
-    logger = logging.getLogger('libfuturize.main')
-
-    if options.stage1 or options.stage2:
-        assert options.both_stages is None
-        options.both_stages = False
-    else:
-        options.both_stages = True
-
-    avail_fixes = set()
-
-    if options.stage1 or options.both_stages:
-        avail_fixes.update(lib2to3_fix_names_stage1)
-        avail_fixes.update(libfuturize_fix_names_stage1)
-    if options.stage2 or options.both_stages:
-        avail_fixes.update(lib2to3_fix_names_stage2)
-        avail_fixes.update(libfuturize_fix_names_stage2)
-
-    if options.unicode_literals:
-        avail_fixes.add('libfuturize.fixes.fix_unicode_literals_import')
-
-    if options.version:
-        print(__version__)
-        return 0
-    if options.list_fixes:
-        print("Available transformations for the -f/--fix option:")
-        # for fixname in sorted(refactor.get_all_fix_names(fixer_pkg)):
-        for fixname in sorted(avail_fixes):
-            print(fixname)
-        if not args:
-            return 0
-    if not args:
-        print("At least one file or directory argument required.",
-              file=sys.stderr)
-        print("Use --help to show usage.", file=sys.stderr)
-        return 2
-
-    unwanted_fixes = set()
-    for fix in options.nofix:
-        if ".fix_" in fix:
-            unwanted_fixes.add(fix)
-        else:
-            # Infer the full module name for the fixer.
-            # First ensure that no names clash (e.g.
-            # lib2to3.fixes.fix_blah and libfuturize.fixes.fix_blah):
-            found = [f for f in avail_fixes
-                     if f.endswith('fix_{0}'.format(fix))]
-            if len(found) > 1:
-                print("Ambiguous fixer name. Choose a fully qualified "
-                      "module name instead from these:\n" +
-                      "\n".join("  " + myf for myf in found),
-                      file=sys.stderr)
-                return 2
-            elif len(found) == 0:
-                print("Unknown fixer. Use --list-fixes or -l for a list.",
-                      file=sys.stderr)
-                return 2
-            unwanted_fixes.add(found[0])
-
-    extra_fixes = set()
-    if options.all_imports:
-        if options.stage1:
-            prefix = 'libfuturize.fixes.'
-            extra_fixes.add(prefix +
-                            'fix_add__future__imports_except_unicode_literals')
-        else:
-            # In case the user hasn't run stage1 for some reason:
-            prefix = 'libpasteurize.fixes.'
-            extra_fixes.add(prefix + 'fix_add_all__future__imports')
-            extra_fixes.add(prefix + 'fix_add_future_standard_library_import')
-            extra_fixes.add(prefix + 'fix_add_all_future_builtins')
-    explicit = set()
-    if options.fix:
-        all_present = False
-        for fix in options.fix:
-            if fix == 'all':
-                all_present = True
-            else:
-                if ".fix_" in fix:
-                    explicit.add(fix)
-                else:
-                    # Infer the full module name for the fixer.
-                    # First ensure that no names clash (e.g.
-                    # lib2to3.fixes.fix_blah and libfuturize.fixes.fix_blah):
-                    found = [f for f in avail_fixes
-                             if f.endswith('fix_{0}'.format(fix))]
-                    if len(found) > 1:
-                        print("Ambiguous fixer name. Choose a fully qualified "
-                              "module name instead from these:\n" +
-                              "\n".join("  " + myf for myf in found),
-                              file=sys.stderr)
-                        return 2
-                    elif len(found) == 0:
-                        print("Unknown fixer. Use --list-fixes or -l for a list.",
-                              file=sys.stderr)
-                        return 2
-                    explicit.add(found[0])
-        if len(explicit & unwanted_fixes) > 0:
-            print("Conflicting usage: the following fixers have been "
-                  "simultaneously requested and disallowed:\n" +
-                  "\n".join("  " + myf for myf in (explicit & unwanted_fixes)),
-                  file=sys.stderr)
-            return 2
-        requested = avail_fixes.union(explicit) if all_present else explicit
-    else:
-        requested = avail_fixes.union(explicit)
-    fixer_names = (requested | extra_fixes) - unwanted_fixes
-
-    input_base_dir = os.path.commonprefix(args)
-    if (input_base_dir and not input_base_dir.endswith(os.sep)
-        and not os.path.isdir(input_base_dir)):
-        # One or more similar names were passed, their directory is the base.
-        # os.path.commonprefix() is ignorant of path elements, this corrects
-        # for that weird API.
-        input_base_dir = os.path.dirname(input_base_dir)
-    if options.output_dir:
-        input_base_dir = input_base_dir.rstrip(os.sep)
-        logger.info('Output in %r will mirror the input directory %r layout.',
-                    options.output_dir, input_base_dir)
-
-    # Initialize the refactoring tool
-    if future.utils.PY26:
-        extra_kwargs = {}
-    else:
-        extra_kwargs = {
-                        'append_suffix': options.add_suffix,
-                        'output_dir': options.output_dir,
-                        'input_base_dir': input_base_dir,
-                       }
-
-    rt = StdoutRefactoringTool(
-            sorted(fixer_names), flags, sorted(explicit),
-            options.nobackups, not options.no_diffs,
-            **extra_kwargs)
-
-    # Refactor all files and directories passed as arguments
-    if not rt.errors:
-        if refactor_stdin:
-            rt.refactor_stdin()
-        else:
-            try:
-                rt.refactor(args, options.write, None,
-                            options.processes)
-            except refactor.MultiprocessingUnsupported:
-                assert options.processes > 1
-                print("Sorry, -j isn't " \
-                      "supported on this platform.", file=sys.stderr)
-                return 1
-        rt.summarize()
-
-    # Return error status (0 if rt.errors is zero)
-    return int(bool(rt.errors))