We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
USE_BUNDLES, attribute 'file_dep' must be {list, tuple}
In Py3K map() and filter() return iterators.


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `nikola/plugins/task/bundles.py`
Content:
```
1 # -*- coding: utf-8 -*-
2 
3 # Copyright © 2012-2013 Roberto Alsina and others.
4 
5 # Permission is hereby granted, free of charge, to any
6 # person obtaining a copy of this software and associated
7 # documentation files (the "Software"), to deal in the
8 # Software without restriction, including without limitation
9 # the rights to use, copy, modify, merge, publish,
10 # distribute, sublicense, and/or sell copies of the
11 # Software, and to permit persons to whom the Software is
12 # furnished to do so, subject to the following conditions:
13 #
14 # The above copyright notice and this permission notice
15 # shall be included in all copies or substantial portions of
16 # the Software.
17 #
18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
19 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
20 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
21 # PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
22 # OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24 # OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 
27 from __future__ import unicode_literals
28 
29 import os
30 
31 try:
32     import webassets
33 except ImportError:
34     webassets = None  # NOQA
35 
36 from nikola.plugin_categories import LateTask
37 from nikola import utils
38 
39 
40 class BuildBundles(LateTask):
41     """Bundle assets using WebAssets."""
42 
43     name = "build_bundles"
44 
45     def set_site(self, site):
46         super(BuildBundles, self).set_site(site)
47         if webassets is None:
48             self.site.config['USE_BUNDLES'] = False
49 
50     def gen_tasks(self):
51         """Bundle assets using WebAssets."""
52 
53         kw = {
54             'filters': self.site.config['FILTERS'],
55             'output_folder': self.site.config['OUTPUT_FOLDER'],
56             'cache_folder': self.site.config['CACHE_FOLDER'],
57             'theme_bundles': get_theme_bundles(self.site.THEMES),
58             'themes': self.site.THEMES,
59             'files_folders': self.site.config['FILES_FOLDERS'],
60             'code_color_scheme': self.site.config['CODE_COLOR_SCHEME'],
61         }
62 
63         def build_bundle(output, inputs):
64             out_dir = os.path.join(kw['output_folder'],
65                                    os.path.dirname(output))
66             inputs = [i for i in inputs if os.path.isfile(
67                 os.path.join(out_dir, i))]
68             cache_dir = os.path.join(kw['cache_folder'], 'webassets')
69             utils.makedirs(cache_dir)
70             env = webassets.Environment(out_dir, os.path.dirname(output),
71                                         cache=cache_dir)
72             bundle = webassets.Bundle(*inputs, output=os.path.basename(output))
73             env.register(output, bundle)
74             # This generates the file
75             env[output].urls()
76 
77         flag = False
78         if (webassets is not None and self.site.config['USE_BUNDLES'] is not
79                 False):
80             for name, files in kw['theme_bundles'].items():
81                 output_path = os.path.join(kw['output_folder'], name)
82                 dname = os.path.dirname(name)
83                 file_dep = [os.path.join(kw['output_folder'], dname, fname)
84                             for fname in files]
85                 file_dep = filter(os.path.isfile, file_dep)  # removes missing files
86                 task = {
87                     'file_dep': file_dep,
88                     'task_dep': ['copy_assets'],
89                     'basename': str(self.name),
90                     'name': str(output_path),
91                     'actions': [(build_bundle, (name, files))],
92                     'targets': [output_path],
93                     'uptodate': [utils.config_changed(kw)],
94                     'clean': True,
95                 }
96                 flag = True
97                 yield utils.apply_filters(task, kw['filters'])
98         if flag is False:  # No page rendered, yield a dummy task
99             yield {
100                 'basename': self.name,
101                 'uptodate': [True],
102                 'name': 'None',
103                 'actions': [],
104             }
105 
106 
107 def get_theme_bundles(themes):
108     """Given a theme chain, return the bundle definitions."""
109     bundles = {}
110     for theme_name in themes:
111         bundles_path = os.path.join(
112             utils.get_theme_path(theme_name), 'bundles')
113         if os.path.isfile(bundles_path):
114             with open(bundles_path) as fd:
115                 for line in fd:
116                     name, files = line.split('=')
117                     files = [f.strip() for f in files.split(',')]
118                     bundles[name.strip()] = files
119                 break
120     return bundles
121
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/nikola/plugins/task/bundles.py b/nikola/plugins/task/bundles.py
--- a/nikola/plugins/task/bundles.py
+++ b/nikola/plugins/task/bundles.py
@@ -84,7 +84,7 @@
                             for fname in files]
                 file_dep = filter(os.path.isfile, file_dep)  # removes missing files
                 task = {
-                    'file_dep': file_dep,
+                    'file_dep': list(file_dep),
                     'task_dep': ['copy_assets'],
                     'basename': str(self.name),
                     'name': str(output_path),

{"golden_diff": "diff --git a/nikola/plugins/task/bundles.py b/nikola/plugins/task/bundles.py\n--- a/nikola/plugins/task/bundles.py\n+++ b/nikola/plugins/task/bundles.py\n@@ -84,7 +84,7 @@\n                             for fname in files]\n                 file_dep = filter(os.path.isfile, file_dep)  # removes missing files\n                 task = {\n-                    'file_dep': file_dep,\n+                    'file_dep': list(file_dep),\n                     'task_dep': ['copy_assets'],\n                     'basename': str(self.name),\n                     'name': str(output_path),\n", "issue": "USE_BUNDLES, attribute 'file_dep' must be {list, tuple}\nIn Py3K map() and filter() return iterators.\n\n", "before_files": [{"content": "# -*- coding: utf-8 -*-\n\n# Copyright \u00a9 2012-2013 Roberto Alsina and others.\n\n# Permission is hereby granted, free of charge, to any\n# person obtaining a copy of this software and associated\n# documentation files (the \"Software\"), to deal in the\n# Software without restriction, including without limitation\n# the rights to use, copy, modify, merge, publish,\n# distribute, sublicense, and/or sell copies of the\n# Software, and to permit persons to whom the Software is\n# furnished to do so, subject to the following conditions:\n#\n# The above copyright notice and this permission notice\n# shall be included in all copies or substantial portions of\n# the Software.\n#\n# THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY\n# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE\n# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR\n# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS\n# OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR\n# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE\n# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n\nfrom __future__ import unicode_literals\n\nimport os\n\ntry:\n    import webassets\nexcept ImportError:\n    webassets = None  # NOQA\n\nfrom nikola.plugin_categories import LateTask\nfrom nikola import utils\n\n\nclass BuildBundles(LateTask):\n    \"\"\"Bundle assets using WebAssets.\"\"\"\n\n    name = \"build_bundles\"\n\n    def set_site(self, site):\n        super(BuildBundles, self).set_site(site)\n        if webassets is None:\n            self.site.config['USE_BUNDLES'] = False\n\n    def gen_tasks(self):\n        \"\"\"Bundle assets using WebAssets.\"\"\"\n\n        kw = {\n            'filters': self.site.config['FILTERS'],\n            'output_folder': self.site.config['OUTPUT_FOLDER'],\n            'cache_folder': self.site.config['CACHE_FOLDER'],\n            'theme_bundles': get_theme_bundles(self.site.THEMES),\n            'themes': self.site.THEMES,\n            'files_folders': self.site.config['FILES_FOLDERS'],\n            'code_color_scheme': self.site.config['CODE_COLOR_SCHEME'],\n        }\n\n        def build_bundle(output, inputs):\n            out_dir = os.path.join(kw['output_folder'],\n                                   os.path.dirname(output))\n            inputs = [i for i in inputs if os.path.isfile(\n                os.path.join(out_dir, i))]\n            cache_dir = os.path.join(kw['cache_folder'], 'webassets')\n            utils.makedirs(cache_dir)\n            env = webassets.Environment(out_dir, os.path.dirname(output),\n                                        cache=cache_dir)\n            bundle = webassets.Bundle(*inputs, output=os.path.basename(output))\n            env.register(output, bundle)\n            # This generates the file\n            env[output].urls()\n\n        flag = False\n        if (webassets is not None and self.site.config['USE_BUNDLES'] is not\n                False):\n            for name, files in kw['theme_bundles'].items():\n                output_path = os.path.join(kw['output_folder'], name)\n                dname = os.path.dirname(name)\n                file_dep = [os.path.join(kw['output_folder'], dname, fname)\n                            for fname in files]\n                file_dep = filter(os.path.isfile, file_dep)  # removes missing files\n                task = {\n                    'file_dep': file_dep,\n                    'task_dep': ['copy_assets'],\n                    'basename': str(self.name),\n                    'name': str(output_path),\n                    'actions': [(build_bundle, (name, files))],\n                    'targets': [output_path],\n                    'uptodate': [utils.config_changed(kw)],\n                    'clean': True,\n                }\n                flag = True\n                yield utils.apply_filters(task, kw['filters'])\n        if flag is False:  # No page rendered, yield a dummy task\n            yield {\n                'basename': self.name,\n                'uptodate': [True],\n                'name': 'None',\n                'actions': [],\n            }\n\n\ndef get_theme_bundles(themes):\n    \"\"\"Given a theme chain, return the bundle definitions.\"\"\"\n    bundles = {}\n    for theme_name in themes:\n        bundles_path = os.path.join(\n            utils.get_theme_path(theme_name), 'bundles')\n        if os.path.isfile(bundles_path):\n            with open(bundles_path) as fd:\n                for line in fd:\n                    name, files = line.split('=')\n                    files = [f.strip() for f in files.split(',')]\n                    bundles[name.strip()] = files\n                break\n    return bundles\n", "path": "nikola/plugins/task/bundles.py"}], "after_files": [{"content": "# -*- coding: utf-8 -*-\n\n# Copyright \u00a9 2012-2013 Roberto Alsina and others.\n\n# Permission is hereby granted, free of charge, to any\n# person obtaining a copy of this software and associated\n# documentation files (the \"Software\"), to deal in the\n# Software without restriction, including without limitation\n# the rights to use, copy, modify, merge, publish,\n# distribute, sublicense, and/or sell copies of the\n# Software, and to permit persons to whom the Software is\n# furnished to do so, subject to the following conditions:\n#\n# The above copyright notice and this permission notice\n# shall be included in all copies or substantial portions of\n# the Software.\n#\n# THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY\n# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE\n# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR\n# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS\n# OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR\n# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE\n# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n\nfrom __future__ import unicode_literals\n\nimport os\n\ntry:\n    import webassets\nexcept ImportError:\n    webassets = None  # NOQA\n\nfrom nikola.plugin_categories import LateTask\nfrom nikola import utils\n\n\nclass BuildBundles(LateTask):\n    \"\"\"Bundle assets using WebAssets.\"\"\"\n\n    name = \"build_bundles\"\n\n    def set_site(self, site):\n        super(BuildBundles, self).set_site(site)\n        if webassets is None:\n            self.site.config['USE_BUNDLES'] = False\n\n    def gen_tasks(self):\n        \"\"\"Bundle assets using WebAssets.\"\"\"\n\n        kw = {\n            'filters': self.site.config['FILTERS'],\n            'output_folder': self.site.config['OUTPUT_FOLDER'],\n            'cache_folder': self.site.config['CACHE_FOLDER'],\n            'theme_bundles': get_theme_bundles(self.site.THEMES),\n            'themes': self.site.THEMES,\n            'files_folders': self.site.config['FILES_FOLDERS'],\n            'code_color_scheme': self.site.config['CODE_COLOR_SCHEME'],\n        }\n\n        def build_bundle(output, inputs):\n            out_dir = os.path.join(kw['output_folder'],\n                                   os.path.dirname(output))\n            inputs = [i for i in inputs if os.path.isfile(\n                os.path.join(out_dir, i))]\n            cache_dir = os.path.join(kw['cache_folder'], 'webassets')\n            utils.makedirs(cache_dir)\n            env = webassets.Environment(out_dir, os.path.dirname(output),\n                                        cache=cache_dir)\n            bundle = webassets.Bundle(*inputs, output=os.path.basename(output))\n            env.register(output, bundle)\n            # This generates the file\n            env[output].urls()\n\n        flag = False\n        if (webassets is not None and self.site.config['USE_BUNDLES'] is not\n                False):\n            for name, files in kw['theme_bundles'].items():\n                output_path = os.path.join(kw['output_folder'], name)\n                dname = os.path.dirname(name)\n                file_dep = [os.path.join(kw['output_folder'], dname, fname)\n                            for fname in files]\n                file_dep = filter(os.path.isfile, file_dep)  # removes missing files\n                task = {\n                    'file_dep': list(file_dep),\n                    'task_dep': ['copy_assets'],\n                    'basename': str(self.name),\n                    'name': str(output_path),\n                    'actions': [(build_bundle, (name, files))],\n                    'targets': [output_path],\n                    'uptodate': [utils.config_changed(kw)],\n                    'clean': True,\n                }\n                flag = True\n                yield utils.apply_filters(task, kw['filters'])\n        if flag is False:  # No page rendered, yield a dummy task\n            yield {\n                'basename': self.name,\n                'uptodate': [True],\n                'name': 'None',\n                'actions': [],\n            }\n\n\ndef get_theme_bundles(themes):\n    \"\"\"Given a theme chain, return the bundle definitions.\"\"\"\n    bundles = {}\n    for theme_name in themes:\n        bundles_path = os.path.join(\n            utils.get_theme_path(theme_name), 'bundles')\n        if os.path.isfile(bundles_path):\n            with open(bundles_path) as fd:\n                for line in fd:\n                    name, files = line.split('=')\n                    files = [f.strip() for f in files.split(',')]\n                    bundles[name.strip()] = files\n                break\n    return bundles\n", "path": "nikola/plugins/task/bundles.py"}]}