Eln uzun patch 2 (#29)

* Create 19-count-resources.py

I actually made it run wit elabapi_python, which was not easy for me but in the end it worked out. I tested it in my testing team and with a productive used team on our instance

* Update 19-count-resources.py

I hope I have correctly understood your comments =)

* remove whitespaces

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Co-authored-by: Hüseyin Uzun <109156218+ELN-uzun@users.noreply.github.com>

Author: NicolasCARPi

examples/19-count-resources.py

@@ -0,0 +1,34 @@
+"""
+This script connects to an eLabFTW instance via the REST API to retrieve and list all available resource categories (also called item types).
+For each category, it prints the category ID and title, followed by the number of entries (items) that belong to that category.
+"""
+
+import elabapi_python
+# use the locally defined client.py module to get the api_client object, fully configured and ready to be used to instantiate api objects
+from client import api_client
+
+# Create API instances for fetching categories (ItemsTypes) and items (Entries) for each category
+items_api = elabapi_python.ItemsTypesApi(api_client)
+items_api2 = elabapi_python.ItemsApi(api_client)
+
+try:
+    # Fetch the categories (ItemsTypes) from the API
+    item_types = items_api.read_items_types()  # Fetch all categories
+
+    # Print the number of categories
+    print(f"Number of categories: {len(item_types)}")
+
+    # Iterate through each category and display the ID and Title
+    for item_type in item_types:
+        print(f"ID: {item_type.id}, Title: {item_type.title}")
+
+        # Fetch the items (entries) for each category by ID
+        entries = items_api2.read_items(cat=item_type.id, limit=100)  # Get the items for the category
+        entry_count = len(entries)  # Count the number of items
+
+        # Display the number of items in the current category
+        print(f"Number of entries in this category: {entry_count}\n")
+
+# Error handling for API requests
+except elabapi_python.rest.ApiException as e:
+    print(f"Error fetching categories or entries: {e}")