Failed to add graph to the code.

But changed to show how to interact with the returned data instead.
Added API rate limits information to the project.
Cleaned up requirements.txt file.

Author: wasin-waeosri

README.md

@@ -146,6 +146,26 @@ if __name__ == "__main__":
 
 The real payoff of async comes when you have **many requests to make**. With `asyncio.gather()`, you can fire all of them concurrently so the total wall-clock time is roughly that of the single slowest response — instead of the sum of all response times. That is exactly the pattern used in `example_async_gather.py` and `async_call_nb.ipynb` examples for fetching multiple RICs.
 
+## Throttling and Rate Limits 
+
+The Data Platform API request limits (throttles) to effectively manage and protect its service and ensure fair usage across the non-streaming content. 
+
+An application would receive an error from the API call if an application reached or exceeds a limit (especially with the Asynchronous HTTP calls). You required to make some necessary adjustments to rectify the interaction with the API and retry the respective API call. 
+
+Two different server errors on API request limits are: 
+
+| **HTTP Status** | **Detail** |
+| --- | --- |
+| **429** | **Error Message**: too many attempts |
+|  | **Description**: A per account limit where the number of requests per second is limited for each account accessing the platform. If this limit is reached, applications will receive a standard HTTP error (HTTP 429 too many requests). |
+|  | **Suggestion**: Please reduce the number of requests per second and retry. |
+
+Please find more detail regarding the Data Platform HTTP error status messages from the [RDP API General Guidelines](https://developers.lseg.com/en/api-catalog/refinitiv-data-platform/refinitiv-data-platform-apis/documentation) document page.
+
+The Historical Pricing endpoint rate limits information is available on the **Reference** tab of the [Data Platform API Playground](https://apidocs.refinitiv.com/Apps/ApiDocs) page. The current rate limits (**As of Mar 2026**) is as follows:
+
+![historical rate limit](images/historical-pricing-ratelimits.png)
+
 ## Prerequisites
 
 - Python 3.11+

images/historical-pricing-ratelimits.png

@@ -1,10 +1,10 @@
-anyio==4.12.1
+anyio==4.13.0
 argon2-cffi==25.1.0
 argon2-cffi-bindings==25.1.0
 arrow==1.4.0
 asttokens==3.0.1
-async-lru==2.2.0
-attrs==25.4.0
+async-lru==2.3.0
+attrs==26.1.0
 babel==2.18.0
 beautifulsoup4==4.14.3
 bleach==6.3.0
@@ -24,13 +24,13 @@ httpcore==1.0.9
 httpx==0.28.1
 idna==3.11
 ipykernel==7.2.0
-ipython==9.11.0
+ipython==9.12.0
 ipython_pygments_lexers==1.1.1
 isoduration==20.11.0
 jedi==0.19.2
 Jinja2==3.1.6
-json5==0.13.0
-jsonpointer==3.0.0
+json5==0.14.0
+jsonpointer==3.1.1
 jsonschema==4.26.0
 jsonschema-specifications==2025.9.1
 jupyter-events==0.12.0
@@ -51,7 +51,9 @@ nbconvert==7.17.0
 nbformat==5.10.4
 nest-asyncio==1.6.0
 notebook_shim==0.2.4
+numpy==2.4.4
 packaging==26.0
+pandas==3.0.1
 pandocfilters==1.5.1
 parso==0.8.6
 platformdirs==4.9.4
@@ -60,15 +62,15 @@ prompt_toolkit==3.0.52
 psutil==7.2.2
 pure_eval==0.2.3
 pycparser==3.0
-Pygments==2.19.2
+Pygments==2.20.0
 python-dateutil==2.9.0.post0
 python-dotenv==1.2.2
-python-json-logger==4.0.0
+python-json-logger==4.1.0
 pywinpty==3.0.3
 PyYAML==6.0.3
 pyzmq==27.1.0
 referencing==0.37.0
-requests==2.32.5
+requests==2.33.0
 rfc3339-validator==0.1.4
 rfc3986-validator==0.1.1
 rfc3987-syntax==1.1.0