Convert and run Python files with nonstandard indentation characters, including invisible ones.
| Full name | Unicode escape |
|---|---|
| ZERO WIDTH JOINER | \u200d |
| EN SPACE | \u2002 |
| SIX-PER-EM SPACE | \u2006 |
| EM QUAD | \u2001 |
| IDEOGRAPHIC SPACE | \u3000 |
| THIN SPACE | \u2009 |
| THREE-PER-EM SPACE | \u2004 |
| FIGURE SPACE | \u2007 |
| PUNCTUATION SPACE | \u2008 |
| ZERO WIDTH NON-JOINER | \u200c |
| NO-BREAK SPACE | \u00a0 |
| ZERO WIDTH SPACE | \u200b |
| NARROW NO-BREAK SPACE | \u202f |
| WORD JOINER | \u2060 |
| FOUR-PER-EM SPACE | \u2005 |
| MEDIUM MATHEMATICAL SPACE | \u205f |
| EN QUAD | \u2000 |
| EM SPACE | \u2003 |
From the command line:
$ python -m zwspy --help
usage: zwspy [-h]
[--char {...}]
{run,convert,restore} file
Convert and run Python files with nonstandard indentation characters
positional arguments:
{run,convert,restore} Run a Python file with nonstandard indentation, convert from a regular file indented with tabs or spaces, or restore from a file with any indentation back to four spaces
file Path to input file
optional arguments:
-h, --help show this help message and exit
--char {...} Unicode full name of target character for conversion, default ZERO WIDTH SPACE
Alternatively, by prepending a special encoding cookie (PEP-263) to any file, the Python interpreter will be able to execute it like any other script with normal indentation.
# coding=zwspy
or
# -*- coding: zwspy -*-
# coding=zwspy
from ast import NodeVisitor
class NodeTransformer(NodeVisitor):
def generic_visit(self, node):
for field, old_value in iter_fields(node):
if isinstance(old_value, list):
new_values = []
for value in old_value:
if isinstance(value, AST):
value = self.visit(value)
if value is None:
continue
elif not isinstance(value, AST):
new_values.extend(value)
continue
new_values.append(value)
old_value[:] = new_values
elif isinstance(old_value, AST):
new_node = self.visit(old_value)
if new_node is None:
delattr(node, field)
else:
setattr(node, field, new_node)
return node