prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Cast to string in ds macro functions
  
  As already written in this issue https://github.com/apache/airflow/issues/19241 strptime function required string, but got proxy if the variables ds/next_ds (the types of these variables changed on version 2.2.0) sent.
  This change will make the function `ds_add` and `ds_format` backward compatible.
  
  <!--
  Thank you for contributing! Please make sure that your code changes
  are covered with tests. And in case of new features or big changes
  remember to adjust the documentation.
  
  Feel free to ping committers for the review!
  
  In case of existing issue, reference it using one of the following:
  
  closes: #ISSUE
  related: #ISSUE
  
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  ---
  **^ Add meaningful description above**
  
  Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst#pull-request-guidelines)** for more information.
  In case of fundamental code change, Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvements+Proposals)) is needed.
  In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x).
  In case of backwards incompatible changes please leave a note in [UPDATING.md](https://github.com/apache/airflow/blob/main/UPDATING.md).
  
  next_ds changed to proxy and it cannot be used in ds_add macro function
  ### Apache Airflow version
  
  2.2.0 (latest released)
  
  ### Operating System
  
  Ubuntu
  
  ### Versions of Apache Airflow Providers
  
  _No response_
  
  ### Deployment
  
  Docker-Compose
  
  ### Deployment details
  
  _No response_
  
  ### What happened
  
  Tried to use this this code:
  `some_variable='{{macros.ds_format(macros.ds_add(next_ds, '
                   '(ti.start_date - ti.execution_date).days), '
                   '"%Y-%m-%d", "%Y-%m-%d 21:00:00")}}')`
  but got this error:
  `strptime() argument 1 must be str, not Proxy`
  because the `next_ds` variable changed to proxy.
  
  ### What you expected to happen
  
  _No response_
  
  ### How to reproduce
  
  _No response_
  
  ### Anything else
  
  _No response_
  
  ### Are you willing to submit PR?
  
  - [ ] Yes I am willing to submit a PR!
  
  ### Code of Conduct
  
  - [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `airflow/macros/__init__.py`
  Content:
  ```
  1 #
  2 # Licensed to the Apache Software Foundation (ASF) under one
  3 # or more contributor license agreements.  See the NOTICE file
  4 # distributed with this work for additional information
  5 # regarding copyright ownership.  The ASF licenses this file
  6 # to you under the Apache License, Version 2.0 (the
  7 # "License"); you may not use this file except in compliance
  8 # with the License.  You may obtain a copy of the License at
  9 #
  10 #   http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 # Unless required by applicable law or agreed to in writing,
  13 # software distributed under the License is distributed on an
  14 # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  15 # KIND, either express or implied.  See the License for the
  16 # specific language governing permissions and limitations
  17 # under the License.
  18 import time  # noqa
  19 import uuid  # noqa
  20 from datetime import datetime, timedelta
  21 from random import random  # noqa
  22 
  23 import dateutil  # noqa
  24 
  25 from airflow.macros import hive  # noqa
  26 
  27 
  28 def ds_add(ds, days):
  29     """
  30     Add or subtract days from a YYYY-MM-DD
  31 
  32     :param ds: anchor date in ``YYYY-MM-DD`` format to add to
  33     :type ds: str
  34     :param days: number of days to add to the ds, you can use negative values
  35     :type days: int
  36 
  37     >>> ds_add('2015-01-01', 5)
  38     '2015-01-06'
  39     >>> ds_add('2015-01-06', -5)
  40     '2015-01-01'
  41     """
  42     ds = datetime.strptime(ds, '%Y-%m-%d')
  43     if days:
  44         ds = ds + timedelta(days)
  45     return ds.isoformat()[:10]
  46 
  47 
  48 def ds_format(ds, input_format, output_format):
  49     """
  50     Takes an input string and outputs another string
  51     as specified in the output format
  52 
  53     :param ds: input string which contains a date
  54     :type ds: str
  55     :param input_format: input string format. E.g. %Y-%m-%d
  56     :type input_format: str
  57     :param output_format: output string format  E.g. %Y-%m-%d
  58     :type output_format: str
  59 
  60     >>> ds_format('2015-01-01', "%Y-%m-%d", "%m-%d-%y")
  61     '01-01-15'
  62     >>> ds_format('1/5/2015', "%m/%d/%Y",  "%Y-%m-%d")
  63     '2015-01-05'
  64     """
  65     return datetime.strptime(ds, input_format).strftime(output_format)
  66 
  67 
  68 def datetime_diff_for_humans(dt, since=None):
  69     """
  70     Return a human-readable/approximate difference between two datetimes, or
  71     one and now.
  72 
  73     :param dt: The datetime to display the diff for
  74     :type dt: datetime.datetime
  75     :param since: When to display the date from. If ``None`` then the diff is
  76         between ``dt`` and now.
  77     :type since: None or datetime.datetime
  78     :rtype: str
  79     """
  80     import pendulum
  81 
  82     return pendulum.instance(dt).diff_for_humans(since)
  83
  ```
  --- 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()
  
  ```
  
golden_diff: diff --git a/airflow/macros/__init__.py b/airflow/macros/__init__.py
  --- a/airflow/macros/__init__.py
  +++ b/airflow/macros/__init__.py
  @@ -19,13 +19,17 @@
   import uuid  # noqa
   from datetime import datetime, timedelta
   from random import random  # noqa
  +from typing import Any, Optional, Union
   
   import dateutil  # noqa
  +import lazy_object_proxy
   
   from airflow.macros import hive  # noqa
   
  +TemplateStringInput = Union[str, lazy_object_proxy.Proxy]
   
  -def ds_add(ds, days):
  +
  +def ds_add(ds: TemplateStringInput, days: int) -> str:
       """
       Add or subtract days from a YYYY-MM-DD
   
  @@ -39,13 +43,13 @@
       >>> ds_add('2015-01-06', -5)
       '2015-01-01'
       """
  -    ds = datetime.strptime(ds, '%Y-%m-%d')
  -    if days:
  -        ds = ds + timedelta(days)
  -    return ds.isoformat()[:10]
  +    if not days:
  +        return str(ds)
  +    dt = datetime.strptime(str(ds), "%Y-%m-%d") + timedelta(days=days)
  +    return dt.strftime("%Y-%m-%d")
   
   
  -def ds_format(ds, input_format, output_format):
  +def ds_format(ds: TemplateStringInput, input_format: str, output_format: str) -> str:
       """
       Takes an input string and outputs another string
       as specified in the output format
  @@ -62,10 +66,10 @@
       >>> ds_format('1/5/2015', "%m/%d/%Y",  "%Y-%m-%d")
       '2015-01-05'
       """
  -    return datetime.strptime(ds, input_format).strftime(output_format)
  +    return datetime.strptime(str(ds), input_format).strftime(output_format)
   
   
  -def datetime_diff_for_humans(dt, since=None):
  +def datetime_diff_for_humans(dt: Any, since: Optional[datetime] = None) -> str:
       """
       Return a human-readable/approximate difference between two datetimes, or
       one and now.
  
verification_info: {"golden_diff": "diff --git a/airflow/macros/__init__.py b/airflow/macros/__init__.py\n--- a/airflow/macros/__init__.py\n+++ b/airflow/macros/__init__.py\n@@ -19,13 +19,17 @@\n import uuid  # noqa\n from datetime import datetime, timedelta\n from random import random  # noqa\n+from typing import Any, Optional, Union\n \n import dateutil  # noqa\n+import lazy_object_proxy\n \n from airflow.macros import hive  # noqa\n \n+TemplateStringInput = Union[str, lazy_object_proxy.Proxy]\n \n-def ds_add(ds, days):\n+\n+def ds_add(ds: TemplateStringInput, days: int) -> str:\n     \"\"\"\n     Add or subtract days from a YYYY-MM-DD\n \n@@ -39,13 +43,13 @@\n     >>> ds_add('2015-01-06', -5)\n     '2015-01-01'\n     \"\"\"\n-    ds = datetime.strptime(ds, '%Y-%m-%d')\n-    if days:\n-        ds = ds + timedelta(days)\n-    return ds.isoformat()[:10]\n+    if not days:\n+        return str(ds)\n+    dt = datetime.strptime(str(ds), \"%Y-%m-%d\") + timedelta(days=days)\n+    return dt.strftime(\"%Y-%m-%d\")\n \n \n-def ds_format(ds, input_format, output_format):\n+def ds_format(ds: TemplateStringInput, input_format: str, output_format: str) -> str:\n     \"\"\"\n     Takes an input string and outputs another string\n     as specified in the output format\n@@ -62,10 +66,10 @@\n     >>> ds_format('1/5/2015', \"%m/%d/%Y\",  \"%Y-%m-%d\")\n     '2015-01-05'\n     \"\"\"\n-    return datetime.strptime(ds, input_format).strftime(output_format)\n+    return datetime.strptime(str(ds), input_format).strftime(output_format)\n \n \n-def datetime_diff_for_humans(dt, since=None):\n+def datetime_diff_for_humans(dt: Any, since: Optional[datetime] = None) -> str:\n     \"\"\"\n     Return a human-readable/approximate difference between two datetimes, or\n     one and now.\n", "issue": "Cast to string in ds macro functions\n\r\nAs already written in this issue https://github.com/apache/airflow/issues/19241 strptime function required string, but got proxy if the variables ds/next_ds (the types of these variables changed on version 2.2.0) sent.\r\nThis change will make the function `ds_add` and `ds_format` backward compatible.\r\n\r\n<!--\r\nThank you for contributing! Please make sure that your code changes\r\nare covered with tests. And in case of new features or big changes\r\nremember to adjust the documentation.\r\n\r\nFeel free to ping committers for the review!\r\n\r\nIn case of existing issue, reference it using one of the following:\r\n\r\ncloses: #ISSUE\r\nrelated: #ISSUE\r\n\r\nHow to write a good git commit message:\r\nhttp://chris.beams.io/posts/git-commit/\r\n-->\r\n\r\n---\r\n**^ Add meaningful description above**\r\n\r\nRead the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst#pull-request-guidelines)** for more information.\r\nIn case of fundamental code change, Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvements+Proposals)) is needed.\r\nIn case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x).\r\nIn case of backwards incompatible changes please leave a note in [UPDATING.md](https://github.com/apache/airflow/blob/main/UPDATING.md).\r\n\nnext_ds changed to proxy and it cannot be used in ds_add macro function\n### Apache Airflow version\n\n2.2.0 (latest released)\n\n### Operating System\n\nUbuntu\n\n### Versions of Apache Airflow Providers\n\n_No response_\n\n### Deployment\n\nDocker-Compose\n\n### Deployment details\n\n_No response_\n\n### What happened\n\nTried to use this this code:\r\n`some_variable='{{macros.ds_format(macros.ds_add(next_ds, '\r\n                 '(ti.start_date - ti.execution_date).days), '\r\n                 '\"%Y-%m-%d\", \"%Y-%m-%d 21:00:00\")}}')`\r\nbut got this error:\r\n`strptime() argument 1 must be str, not Proxy`\r\nbecause the `next_ds` variable changed to proxy.\n\n### What you expected to happen\n\n_No response_\n\n### How to reproduce\n\n_No response_\n\n### Anything else\n\n_No response_\n\n### Are you willing to submit PR?\n\n- [ ] Yes I am willing to submit a PR!\n\n### Code of Conduct\n\n- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)\n\n", "before_files": [{"content": "#\n# Licensed to the Apache Software Foundation (ASF) under one\n# or more contributor license agreements.  See the NOTICE file\n# distributed with this work for additional information\n# regarding copyright ownership.  The ASF licenses this file\n# to you under the Apache License, Version 2.0 (the\n# \"License\"); you may not use this file except in compliance\n# with the License.  You may obtain a copy of the License at\n#\n#   http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing,\n# software distributed under the License is distributed on an\n# \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY\n# KIND, either express or implied.  See the License for the\n# specific language governing permissions and limitations\n# under the License.\nimport time  # noqa\nimport uuid  # noqa\nfrom datetime import datetime, timedelta\nfrom random import random  # noqa\n\nimport dateutil  # noqa\n\nfrom airflow.macros import hive  # noqa\n\n\ndef ds_add(ds, days):\n    \"\"\"\n    Add or subtract days from a YYYY-MM-DD\n\n    :param ds: anchor date in ``YYYY-MM-DD`` format to add to\n    :type ds: str\n    :param days: number of days to add to the ds, you can use negative values\n    :type days: int\n\n    >>> ds_add('2015-01-01', 5)\n    '2015-01-06'\n    >>> ds_add('2015-01-06', -5)\n    '2015-01-01'\n    \"\"\"\n    ds = datetime.strptime(ds, '%Y-%m-%d')\n    if days:\n        ds = ds + timedelta(days)\n    return ds.isoformat()[:10]\n\n\ndef ds_format(ds, input_format, output_format):\n    \"\"\"\n    Takes an input string and outputs another string\n    as specified in the output format\n\n    :param ds: input string which contains a date\n    :type ds: str\n    :param input_format: input string format. E.g. %Y-%m-%d\n    :type input_format: str\n    :param output_format: output string format  E.g. %Y-%m-%d\n    :type output_format: str\n\n    >>> ds_format('2015-01-01', \"%Y-%m-%d\", \"%m-%d-%y\")\n    '01-01-15'\n    >>> ds_format('1/5/2015', \"%m/%d/%Y\",  \"%Y-%m-%d\")\n    '2015-01-05'\n    \"\"\"\n    return datetime.strptime(ds, input_format).strftime(output_format)\n\n\ndef datetime_diff_for_humans(dt, since=None):\n    \"\"\"\n    Return a human-readable/approximate difference between two datetimes, or\n    one and now.\n\n    :param dt: The datetime to display the diff for\n    :type dt: datetime.datetime\n    :param since: When to display the date from. If ``None`` then the diff is\n        between ``dt`` and now.\n    :type since: None or datetime.datetime\n    :rtype: str\n    \"\"\"\n    import pendulum\n\n    return pendulum.instance(dt).diff_for_humans(since)\n", "path": "airflow/macros/__init__.py"}], "after_files": [{"content": "#\n# Licensed to the Apache Software Foundation (ASF) under one\n# or more contributor license agreements.  See the NOTICE file\n# distributed with this work for additional information\n# regarding copyright ownership.  The ASF licenses this file\n# to you under the Apache License, Version 2.0 (the\n# \"License\"); you may not use this file except in compliance\n# with the License.  You may obtain a copy of the License at\n#\n#   http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing,\n# software distributed under the License is distributed on an\n# \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY\n# KIND, either express or implied.  See the License for the\n# specific language governing permissions and limitations\n# under the License.\nimport time  # noqa\nimport uuid  # noqa\nfrom datetime import datetime, timedelta\nfrom random import random  # noqa\nfrom typing import Any, Optional, Union\n\nimport dateutil  # noqa\nimport lazy_object_proxy\n\nfrom airflow.macros import hive  # noqa\n\nTemplateStringInput = Union[str, lazy_object_proxy.Proxy]\n\n\ndef ds_add(ds: TemplateStringInput, days: int) -> str:\n    \"\"\"\n    Add or subtract days from a YYYY-MM-DD\n\n    :param ds: anchor date in ``YYYY-MM-DD`` format to add to\n    :type ds: str\n    :param days: number of days to add to the ds, you can use negative values\n    :type days: int\n\n    >>> ds_add('2015-01-01', 5)\n    '2015-01-06'\n    >>> ds_add('2015-01-06', -5)\n    '2015-01-01'\n    \"\"\"\n    if not days:\n        return str(ds)\n    dt = datetime.strptime(str(ds), \"%Y-%m-%d\") + timedelta(days=days)\n    return dt.strftime(\"%Y-%m-%d\")\n\n\ndef ds_format(ds: TemplateStringInput, input_format: str, output_format: str) -> str:\n    \"\"\"\n    Takes an input string and outputs another string\n    as specified in the output format\n\n    :param ds: input string which contains a date\n    :type ds: str\n    :param input_format: input string format. E.g. %Y-%m-%d\n    :type input_format: str\n    :param output_format: output string format  E.g. %Y-%m-%d\n    :type output_format: str\n\n    >>> ds_format('2015-01-01', \"%Y-%m-%d\", \"%m-%d-%y\")\n    '01-01-15'\n    >>> ds_format('1/5/2015', \"%m/%d/%Y\",  \"%Y-%m-%d\")\n    '2015-01-05'\n    \"\"\"\n    return datetime.strptime(str(ds), input_format).strftime(output_format)\n\n\ndef datetime_diff_for_humans(dt: Any, since: Optional[datetime] = None) -> str:\n    \"\"\"\n    Return a human-readable/approximate difference between two datetimes, or\n    one and now.\n\n    :param dt: The datetime to display the diff for\n    :type dt: datetime.datetime\n    :param since: When to display the date from. If ``None`` then the diff is\n        between ``dt`` and now.\n    :type since: None or datetime.datetime\n    :rtype: str\n    \"\"\"\n    import pendulum\n\n    return pendulum.instance(dt).diff_for_humans(since)\n", "path": "airflow/macros/__init__.py"}]}