Inline comment in multiline expression creates syntax error

[asottile]

#py x = [
    1,  ## For reasons
    2,
]

 $ cheetah-compile test.tmpl 
Compiling test.tmpl
Traceback (most recent call last):
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/bin/cheetah-compile", line 11, in <module>
    sys.exit(main())
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/cheetah_compile.py", line 91, in main
    compile_all(sys.argv[1:])
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/cheetah_compile.py", line 87, in compile_all
    compile_template(filename)
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/cheetah_compile.py", line 20, in compile_template
    return compile_file(filename, **kwargs)
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/compile.py", line 50, in compile_file
    compiled_source = compile_source(contents, **kwargs)
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/compile.py", line 33, in compile_source
    return compiler.getModuleCode()
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/legacy_compiler.py", line 541, in getModuleCode
    self._parser.parse()
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/legacy_parser.py", line 217, in inner
    sys.exc_info()[2]
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/legacy_parser.py", line 207, in inner
    return func(self, *args, **kwargs)
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/legacy_parser.py", line 801, in parse
    self.eatDirective()
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/legacy_parser.py", line 854, in eatDirective
    handler(expr, line_col=line_col)
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/legacy_compiler.py", line 205, in _add_with_line_col
    self._update_locals(expr)
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/legacy_compiler.py", line 198, in _update_locals
    self._local_vars.update(get_lvalues(expr))
  File "/nail/home/asottile/pg/yelp-main/virtualenv_run/lib/python2.7/site-packages/Cheetah/ast_utils.py", line 69, in get_lvalues
    ast_obj = ast.parse(expression)
  File "/usr/lib64/python2.7/ast.py", line 37, in parse
    return compile(source, filename, mode, PyCF_ONLY_AST)
Cheetah.legacy_parser.ParseError: 

SyntaxError: unexpected EOF while parsing (<unknown>, line 1)

Line 4, column 2

Line|Cheetah Code
----|-------------------------------------------------------------
1   |#py x = [
2   |    1,  ## for reasons
3   |    2,
4   |]
      ^