| | |
| | |
| |
|
| | """Fixer that cleans up a tuple argument to isinstance after the tokens |
| | in it were fixed. This is mainly used to remove double occurrences of |
| | tokens as a leftover of the long -> int / unicode -> str conversion. |
| | |
| | eg. isinstance(x, (int, long)) -> isinstance(x, (int, int)) |
| | -> isinstance(x, int) |
| | """ |
| |
|
| | from .. import fixer_base |
| | from ..fixer_util import token |
| |
|
| |
|
| | class FixIsinstance(fixer_base.BaseFix): |
| | BM_compatible = True |
| | PATTERN = """ |
| | power< |
| | 'isinstance' |
| | trailer< '(' arglist< any ',' atom< '(' |
| | args=testlist_gexp< any+ > |
| | ')' > > ')' > |
| | > |
| | """ |
| |
|
| | run_order = 6 |
| |
|
| | def transform(self, node, results): |
| | names_inserted = set() |
| | testlist = results["args"] |
| | args = testlist.children |
| | new_args = [] |
| | iterator = enumerate(args) |
| | for idx, arg in iterator: |
| | if arg.type == token.NAME and arg.value in names_inserted: |
| | if idx < len(args) - 1 and args[idx + 1].type == token.COMMA: |
| | next(iterator) |
| | continue |
| | else: |
| | new_args.append(arg) |
| | if arg.type == token.NAME: |
| | names_inserted.add(arg.value) |
| | if new_args and new_args[-1].type == token.COMMA: |
| | del new_args[-1] |
| | if len(new_args) == 1: |
| | atom = testlist.parent |
| | new_args[0].prefix = atom.prefix |
| | atom.replace(new_args[0]) |
| | else: |
| | args[:] = new_args |
| | node.changed() |
| |
|
