We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
The export-schema command fails when trying to import local modules


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `strawberry/cli/commands/export_schema.py`
Content:
```
1 import click
2 
3 from strawberry import Schema
4 from strawberry.printer import print_schema
5 from strawberry.utils.importer import import_module_symbol
6 
7 
8 @click.command(short_help="Exports the schema")
9 @click.argument("schema", type=str)
10 def export_schema(schema: str):
11     try:
12         schema_symbol = import_module_symbol(schema, default_symbol_name="schema")
13     except (ImportError, AttributeError) as exc:
14         message = str(exc)
15         raise click.BadArgumentUsage(message)
16     if not isinstance(schema_symbol, Schema):
17         message = "The `schema` must be an instance of strawberry.Schema"
18         raise click.BadArgumentUsage(message)
19     print(print_schema(schema_symbol))
20
```
--- 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/strawberry/cli/commands/export_schema.py b/strawberry/cli/commands/export_schema.py
--- a/strawberry/cli/commands/export_schema.py
+++ b/strawberry/cli/commands/export_schema.py
@@ -1,3 +1,5 @@
+import sys
+
 import click
 
 from strawberry import Schema
@@ -7,7 +9,20 @@
 
 @click.command(short_help="Exports the schema")
 @click.argument("schema", type=str)
-def export_schema(schema: str):
+@click.option(
+    "--app-dir",
+    default=".",
+    type=str,
+    show_default=True,
+    help=(
+        "Look for the module in the specified directory, by adding this to the "
+        "PYTHONPATH. Defaults to the current working directory. "
+        "Works the same as `--app-dir` in uvicorn."
+    ),
+)
+def export_schema(schema: str, app_dir):
+    sys.path.insert(0, app_dir)
+
     try:
         schema_symbol = import_module_symbol(schema, default_symbol_name="schema")
     except (ImportError, AttributeError) as exc:

{"golden_diff": "diff --git a/strawberry/cli/commands/export_schema.py b/strawberry/cli/commands/export_schema.py\n--- a/strawberry/cli/commands/export_schema.py\n+++ b/strawberry/cli/commands/export_schema.py\n@@ -1,3 +1,5 @@\n+import sys\n+\n import click\n \n from strawberry import Schema\n@@ -7,7 +9,20 @@\n \n @click.command(short_help=\"Exports the schema\")\n @click.argument(\"schema\", type=str)\n-def export_schema(schema: str):\n+@click.option(\n+    \"--app-dir\",\n+    default=\".\",\n+    type=str,\n+    show_default=True,\n+    help=(\n+        \"Look for the module in the specified directory, by adding this to the \"\n+        \"PYTHONPATH. Defaults to the current working directory. \"\n+        \"Works the same as `--app-dir` in uvicorn.\"\n+    ),\n+)\n+def export_schema(schema: str, app_dir):\n+    sys.path.insert(0, app_dir)\n+\n     try:\n         schema_symbol = import_module_symbol(schema, default_symbol_name=\"schema\")\n     except (ImportError, AttributeError) as exc:\n", "issue": "The export-schema command fails when trying to import local modules\n\n", "before_files": [{"content": "import click\n\nfrom strawberry import Schema\nfrom strawberry.printer import print_schema\nfrom strawberry.utils.importer import import_module_symbol\n\n\n@click.command(short_help=\"Exports the schema\")\n@click.argument(\"schema\", type=str)\ndef export_schema(schema: str):\n    try:\n        schema_symbol = import_module_symbol(schema, default_symbol_name=\"schema\")\n    except (ImportError, AttributeError) as exc:\n        message = str(exc)\n        raise click.BadArgumentUsage(message)\n    if not isinstance(schema_symbol, Schema):\n        message = \"The `schema` must be an instance of strawberry.Schema\"\n        raise click.BadArgumentUsage(message)\n    print(print_schema(schema_symbol))\n", "path": "strawberry/cli/commands/export_schema.py"}], "after_files": [{"content": "import sys\n\nimport click\n\nfrom strawberry import Schema\nfrom strawberry.printer import print_schema\nfrom strawberry.utils.importer import import_module_symbol\n\n\n@click.command(short_help=\"Exports the schema\")\n@click.argument(\"schema\", type=str)\n@click.option(\n    \"--app-dir\",\n    default=\".\",\n    type=str,\n    show_default=True,\n    help=(\n        \"Look for the module in the specified directory, by adding this to the \"\n        \"PYTHONPATH. Defaults to the current working directory. \"\n        \"Works the same as `--app-dir` in uvicorn.\"\n    ),\n)\ndef export_schema(schema: str, app_dir):\n    sys.path.insert(0, app_dir)\n\n    try:\n        schema_symbol = import_module_symbol(schema, default_symbol_name=\"schema\")\n    except (ImportError, AttributeError) as exc:\n        message = str(exc)\n        raise click.BadArgumentUsage(message)\n    if not isinstance(schema_symbol, Schema):\n        message = \"The `schema` must be an instance of strawberry.Schema\"\n        raise click.BadArgumentUsage(message)\n    print(print_schema(schema_symbol))\n", "path": "strawberry/cli/commands/export_schema.py"}]}