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Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
__init__.py	5.02 KB	-rw-r--r--
fix_UserDict.py	3.75 KB	-rw-r--r--
fix_absolute_import.py	3.07 KB	-rw-r--r--
fix_add__future__imports_excep...	663 B	-rw-r--r--
fix_basestring.py	395 B	-rw-r--r--
fix_bytes.py	685 B	-rw-r--r--
fix_cmp.py	702 B	-rw-r--r--
fix_division.py	229 B	-rw-r--r--
fix_division_safe.py	2.19 KB	-rw-r--r--
fix_execfile.py	922 B	-rw-r--r--
fix_future_builtins.py	1.98 KB	-rw-r--r--
fix_future_standard_library.py	735 B	-rw-r--r--
fix_future_standard_library_ur...	1003 B	-rw-r--r--
fix_metaclass.py	9.34 KB	-rw-r--r--
fix_next_call.py	3.08 KB	-rw-r--r--
fix_object.py	407 B	-rw-r--r--
fix_oldstr_wrap.py	2.5 KB	-rw-r--r--
fix_order___future__imports.py	830 B	-rw-r--r--
fix_print.py	3.3 KB	-rw-r--r--
fix_print_with_import.py	736 B	-rw-r--r--
fix_raise.py	2.12 KB	-rw-r--r--
fix_remove_old__future__import...	852 B	-rw-r--r--
fix_unicode_keep_u.py	780 B	-rw-r--r--
fix_unicode_literals_import.py	372 B	-rw-r--r--
fix_xrange_with_import.py	479 B	-rw-r--r--

Code Editor : fix_raise.py

"""Fixer for 'raise E, V'

From Armin Ronacher's ``python-modernize``.

raise         -> raise
raise E       -> raise E
raise E, V    -> raise E(V)

raise (((E, E'), E''), E'''), V -> raise E(V)

CAVEATS:
1) "raise E, V" will be incorrectly translated if V is an exception
   instance. The correct Python 3 idiom is

raise E from V

but since we can't detect instance-hood by syntax alone and since
   any client code would have to be changed as well, we don't automate
   this.
"""
# Author: Collin Winter, Armin Ronacher

# Local imports
from lib2to3 import pytree, fixer_base
from lib2to3.pgen2 import token
from lib2to3.fixer_util import Name, Call, is_tuple

class FixRaise(fixer_base.BaseFix):

BM_compatible = True
    PATTERN = """
    raise_stmt< 'raise' exc=any [',' val=any] >
    """

def transform(self, node, results):
        syms = self.syms

exc = results["exc"].clone()
        if exc.type == token.STRING:
            msg = "Python 3 does not support string exceptions"
            self.cannot_convert(node, msg)
            return

# Python 2 supports
        #  raise ((((E1, E2), E3), E4), E5), V
        # as a synonym for
        #  raise E1, V
        # Since Python 3 will not support this, we recurse down any tuple
        # literals, always taking the first element.
        if is_tuple(exc):
            while is_tuple(exc):
                # exc.children[1:-1] is the unparenthesized tuple
                # exc.children[1].children[0] is the first element of the tuple
                exc = exc.children[1].children[0].clone()
            exc.prefix = u" "

if "val" not in results:
            # One-argument raise
            new = pytree.Node(syms.raise_stmt, [Name(u"raise"), exc])
            new.prefix = node.prefix
            return new

val = results["val"].clone()
        if is_tuple(val):
            args = [c.clone() for c in val.children[1:-1]]
        else:
            val.prefix = u""
            args = [val]

return pytree.Node(syms.raise_stmt,
                           [Name(u"raise"), Call(exc, args)],
                           prefix=node.prefix)

${this.title}

Code Editor : fix_raise.py