prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  management/commands errors
  There are some queries that reference deleted fields in this module (examples below). I was wondering does it matter if this module is updated because it seems like this file hasn't been updated in a while, or are there other reasons that these queries still exist? Thanks.
  
  https://github.com/mirumee/saleor/blob/master/saleor/core/management/commands/change_currency.py#L45
  https://github.com/mirumee/saleor/blob/master/saleor/core/management/commands/change_currency.py#L51
  https://github.com/mirumee/saleor/blob/master/saleor/core/management/commands/change_currency.py#L52
  https://github.com/mirumee/saleor/blob/master/saleor/core/management/commands/change_currency.py#L53
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `saleor/core/management/commands/change_currency.py`
  Content:
  ```
  1 from babel.numbers import UnknownCurrencyError, validate_currency
  2 from django.core.management.base import BaseCommand, CommandError
  3 
  4 from ....checkout.models import Checkout
  5 from ....discount.models import Voucher
  6 from ....giftcard.models import GiftCard
  7 from ....order.models import Order, OrderLine
  8 from ....payment.models import Payment, Transaction
  9 from ....product.models import Product, ProductVariant
  10 from ....shipping.models import ShippingMethod
  11 
  12 
  13 class Command(BaseCommand):
  14     help = (
  15         "Change currency in all models in the database. "
  16         "Note, that this command only changes currency code "
  17         "without doing any conversion. "
  18         "Currency set by this command must match "
  19         "with the value set in DEFAULT_CURRENCY environment variable."
  20     )
  21 
  22     def add_arguments(self, parser):
  23         parser.add_argument("currency", type=str)
  24 
  25         parser.add_argument(
  26             "--force",
  27             action="store_true",
  28             help="Allows running command without validation.",
  29         )
  30 
  31     def handle(self, **options):
  32         force = options.get("force", False)
  33         currency = options["currency"]
  34 
  35         if not force:
  36             try:
  37                 validate_currency(currency)
  38             except UnknownCurrencyError:
  39                 raise CommandError(
  40                     "Unknown currency. "
  41                     "Use `--force` flag to force migration currencies."
  42                 )
  43 
  44         Checkout.objects.update(currency=currency)
  45         Voucher.objects.update(currency=currency)
  46         GiftCard.objects.update(currency=currency)
  47         Order.objects.update(currency=currency)
  48         OrderLine.objects.update(currency=currency)
  49         Payment.objects.update(currency=currency)
  50         Transaction.objects.update(currency=currency)
  51         Product.objects.update(currency=currency)
  52         ProductVariant.objects.update(currency=currency)
  53         ShippingMethod.objects.update(currency=currency)
  54
  ```
  --- 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/saleor/core/management/commands/change_currency.py b/saleor/core/management/commands/change_currency.py
  deleted file mode 100644
  --- a/saleor/core/management/commands/change_currency.py
  +++ /dev/null
  @@ -1,53 +0,0 @@
  -from babel.numbers import UnknownCurrencyError, validate_currency
  -from django.core.management.base import BaseCommand, CommandError
  -
  -from ....checkout.models import Checkout
  -from ....discount.models import Voucher
  -from ....giftcard.models import GiftCard
  -from ....order.models import Order, OrderLine
  -from ....payment.models import Payment, Transaction
  -from ....product.models import Product, ProductVariant
  -from ....shipping.models import ShippingMethod
  -
  -
  -class Command(BaseCommand):
  -    help = (
  -        "Change currency in all models in the database. "
  -        "Note, that this command only changes currency code "
  -        "without doing any conversion. "
  -        "Currency set by this command must match "
  -        "with the value set in DEFAULT_CURRENCY environment variable."
  -    )
  -
  -    def add_arguments(self, parser):
  -        parser.add_argument("currency", type=str)
  -
  -        parser.add_argument(
  -            "--force",
  -            action="store_true",
  -            help="Allows running command without validation.",
  -        )
  -
  -    def handle(self, **options):
  -        force = options.get("force", False)
  -        currency = options["currency"]
  -
  -        if not force:
  -            try:
  -                validate_currency(currency)
  -            except UnknownCurrencyError:
  -                raise CommandError(
  -                    "Unknown currency. "
  -                    "Use `--force` flag to force migration currencies."
  -                )
  -
  -        Checkout.objects.update(currency=currency)
  -        Voucher.objects.update(currency=currency)
  -        GiftCard.objects.update(currency=currency)
  -        Order.objects.update(currency=currency)
  -        OrderLine.objects.update(currency=currency)
  -        Payment.objects.update(currency=currency)
  -        Transaction.objects.update(currency=currency)
  -        Product.objects.update(currency=currency)
  -        ProductVariant.objects.update(currency=currency)
  -        ShippingMethod.objects.update(currency=currency)
  
verification_info: {"golden_diff": "diff --git a/saleor/core/management/commands/change_currency.py b/saleor/core/management/commands/change_currency.py\ndeleted file mode 100644\n--- a/saleor/core/management/commands/change_currency.py\n+++ /dev/null\n@@ -1,53 +0,0 @@\n-from babel.numbers import UnknownCurrencyError, validate_currency\n-from django.core.management.base import BaseCommand, CommandError\n-\n-from ....checkout.models import Checkout\n-from ....discount.models import Voucher\n-from ....giftcard.models import GiftCard\n-from ....order.models import Order, OrderLine\n-from ....payment.models import Payment, Transaction\n-from ....product.models import Product, ProductVariant\n-from ....shipping.models import ShippingMethod\n-\n-\n-class Command(BaseCommand):\n-    help = (\n-        \"Change currency in all models in the database. \"\n-        \"Note, that this command only changes currency code \"\n-        \"without doing any conversion. \"\n-        \"Currency set by this command must match \"\n-        \"with the value set in DEFAULT_CURRENCY environment variable.\"\n-    )\n-\n-    def add_arguments(self, parser):\n-        parser.add_argument(\"currency\", type=str)\n-\n-        parser.add_argument(\n-            \"--force\",\n-            action=\"store_true\",\n-            help=\"Allows running command without validation.\",\n-        )\n-\n-    def handle(self, **options):\n-        force = options.get(\"force\", False)\n-        currency = options[\"currency\"]\n-\n-        if not force:\n-            try:\n-                validate_currency(currency)\n-            except UnknownCurrencyError:\n-                raise CommandError(\n-                    \"Unknown currency. \"\n-                    \"Use `--force` flag to force migration currencies.\"\n-                )\n-\n-        Checkout.objects.update(currency=currency)\n-        Voucher.objects.update(currency=currency)\n-        GiftCard.objects.update(currency=currency)\n-        Order.objects.update(currency=currency)\n-        OrderLine.objects.update(currency=currency)\n-        Payment.objects.update(currency=currency)\n-        Transaction.objects.update(currency=currency)\n-        Product.objects.update(currency=currency)\n-        ProductVariant.objects.update(currency=currency)\n-        ShippingMethod.objects.update(currency=currency)\n", "issue": "management/commands errors\nThere are some queries that reference deleted fields in this module (examples below). I was wondering does it matter if this module is updated because it seems like this file hasn't been updated in a while, or are there other reasons that these queries still exist? Thanks.\r\n\r\nhttps://github.com/mirumee/saleor/blob/master/saleor/core/management/commands/change_currency.py#L45\r\nhttps://github.com/mirumee/saleor/blob/master/saleor/core/management/commands/change_currency.py#L51\r\nhttps://github.com/mirumee/saleor/blob/master/saleor/core/management/commands/change_currency.py#L52\r\nhttps://github.com/mirumee/saleor/blob/master/saleor/core/management/commands/change_currency.py#L53\n", "before_files": [{"content": "from babel.numbers import UnknownCurrencyError, validate_currency\nfrom django.core.management.base import BaseCommand, CommandError\n\nfrom ....checkout.models import Checkout\nfrom ....discount.models import Voucher\nfrom ....giftcard.models import GiftCard\nfrom ....order.models import Order, OrderLine\nfrom ....payment.models import Payment, Transaction\nfrom ....product.models import Product, ProductVariant\nfrom ....shipping.models import ShippingMethod\n\n\nclass Command(BaseCommand):\n    help = (\n        \"Change currency in all models in the database. \"\n        \"Note, that this command only changes currency code \"\n        \"without doing any conversion. \"\n        \"Currency set by this command must match \"\n        \"with the value set in DEFAULT_CURRENCY environment variable.\"\n    )\n\n    def add_arguments(self, parser):\n        parser.add_argument(\"currency\", type=str)\n\n        parser.add_argument(\n            \"--force\",\n            action=\"store_true\",\n            help=\"Allows running command without validation.\",\n        )\n\n    def handle(self, **options):\n        force = options.get(\"force\", False)\n        currency = options[\"currency\"]\n\n        if not force:\n            try:\n                validate_currency(currency)\n            except UnknownCurrencyError:\n                raise CommandError(\n                    \"Unknown currency. \"\n                    \"Use `--force` flag to force migration currencies.\"\n                )\n\n        Checkout.objects.update(currency=currency)\n        Voucher.objects.update(currency=currency)\n        GiftCard.objects.update(currency=currency)\n        Order.objects.update(currency=currency)\n        OrderLine.objects.update(currency=currency)\n        Payment.objects.update(currency=currency)\n        Transaction.objects.update(currency=currency)\n        Product.objects.update(currency=currency)\n        ProductVariant.objects.update(currency=currency)\n        ShippingMethod.objects.update(currency=currency)\n", "path": "saleor/core/management/commands/change_currency.py"}], "after_files": [{"content": null, "path": "saleor/core/management/commands/change_currency.py"}]}