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Preview: fix_itertools_imports.py Size: 2.04 KB

/lib64/python3.12/lib2to3/fixes/fix_itertools_imports.py

""" Fixer for imports of itertools.(imap|ifilter|izip|ifilterfalse) """

# Local imports
from lib2to3 import fixer_base
from lib2to3.fixer_util import BlankLine, syms, token


class FixItertoolsImports(fixer_base.BaseFix):
    BM_compatible = True
    PATTERN = """
              import_from< 'from' 'itertools' 'import' imports=any >
              """ %(locals())

    def transform(self, node, results):
        imports = results['imports']
        if imports.type == syms.import_as_name or not imports.children:
            children = [imports]
        else:
            children = imports.children
        for child in children[::2]:
            if child.type == token.NAME:
                member = child.value
                name_node = child
            elif child.type == token.STAR:
                # Just leave the import as is.
                return
            else:
                assert child.type == syms.import_as_name
                name_node = child.children[0]
            member_name = name_node.value
            if member_name in ('imap', 'izip', 'ifilter'):
                child.value = None
                child.remove()
            elif member_name in ('ifilterfalse', 'izip_longest'):
                node.changed()
                name_node.value = ('filterfalse' if member_name[1] == 'f'
                                   else 'zip_longest')

        # Make sure the import statement is still sane
        children = imports.children[:] or [imports]
        remove_comma = True
        for child in children:
            if remove_comma and child.type == token.COMMA:
                child.remove()
            else:
                remove_comma ^= True

        while children and children[-1].type == token.COMMA:
            children.pop().remove()

        # If there are no imports left, just get rid of the entire statement
        if (not (imports.children or getattr(imports, 'value', None)) or
            imports.parent is None):
            p = node.prefix
            node = BlankLine()
            node.prefix = p
            return node

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__pycache__ DIR	-	drwxr-xr-x	2026-01-08 23:02:23	Edit Download recursive recursive
fix_apply.py	2.29 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_asserts.py	984 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_basestring.py	320 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_buffer.py	590 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_dict.py	3.67 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_except.py	3.27 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_exec.py	979 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_execfile.py	2.00 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_exitfunc.py	2.44 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_filter.py	2.70 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_funcattrs.py	644 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_future.py	547 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_getcwdu.py	451 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_has_key.py	3.12 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_idioms.py	4.76 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_import.py	3.18 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_imports.py	5.55 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_imports2.py	289 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_input.py	708 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_intern.py	1.12 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_isinstance.py	1.57 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_itertools.py	1.51 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_itertools_imports.py	2.04 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_long.py	476 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_map.py	3.55 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_metaclass.py	8.00 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_methodattrs.py	606 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_ne.py	571 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_next.py	3.10 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_nonzero.py	591 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_numliterals.py	768 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_operator.py	3.35 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_paren.py	1.20 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_print.py	2.78 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_raise.py	2.86 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_raw_input.py	454 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_reduce.py	837 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_reload.py	1.06 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_renames.py	2.17 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_repr.py	613 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_set_literal.py	1.66 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_standarderror.py	449 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_sys_exc.py	1.01 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_throw.py	1.54 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_tuple_params.py	5.43 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_types.py	1.73 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_unicode.py	1.23 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_urllib.py	8.17 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_ws_comma.py	1.06 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_xrange.py	2.63 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_xreadlines.py	689 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
fix_zip.py	1.26 KB	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive
__init__.py	47 B	lrw-r--r--	2025-10-09 11:07:00	Edit Download recursive recursive