add example python script

examples/launch_ptycho.py

@@ -0,0 +1,39 @@
+# Note that you must have prefect in your environment. Recommend going up one directory and 
+# running `pip install -r requirements.txt`
+#
+import asyncio
+import os
+import prefect
+
+
+def get_prefect_client(httpx_settings=None):
+    # This prefect client uses prefect settings to set the the api url and api key. This 
+    # can be set in a number of ways. This script ASSUMES that you have set environment variables
+    # PREFECT_API_URL = https://servername/api
+    # PREFECT_API_KEY = the api key given to you
+    # httpx_settings allows you to affect the http client that the prefect client uses
+    return prefect.get_client(httpx_settings=httpx_settings)
+
+
+def get_prefect_client_2(prefect_api_url, prefect_api_key, httpx_settings=None):
+    # Same prefect client, but if you know the url and api_key
+    # httpx_settings allows you to affect the http client that the prefect client uses
+    return prefect.PrefectClient(
+        prefect_api_url,
+        api_key=prefect_api_key,
+        httpx_settings=httpx_settings)
+
+
+async def prefect_start_flow(prefect_client, deployment_name, file_path):
+
+    deployment = await prefect_client.read_deployment_by_name(deployment_name)
+    flow_run = await prefect_client.create_flow_run_from_deployment(
+        deployment.id,
+        name=os.path.basename(file_path),
+        parameters={"file_path": file_path},
+    )
+    return flow_run
+
+
+client = get_prefect_client()
+asyncio.run(prefect_start_flow(client, "transfer_auto_recon/transfer_auto_recon", "/a/file/path"))