Add dotenv support

Quorum/.env.example

@@ -0,0 +1,2 @@
+export ETHSCAN_API_KEY="your_etherscan_api_key"
+export ANTHROPIC_API_KEY="your_anthropic_api_key"

Quorum/config.py

@@ -3,6 +3,9 @@
 from pathlib import Path
 
 import Quorum.utils.pretty_printer as pp
+from Quorum.utils.load_env import load_env_variables
+
+load_env_variables()
 
 main_path = os.getenv("QUORUM_PATH")
 if not main_path:

Quorum/utils/load_env.py

@@ -0,0 +1,27 @@
+import os
+from dotenv import load_dotenv
+
+import Quorum.utils.pretty_printer as pp
+
+def load_env_variables():
+    # Capture the environment variables before loading .env
+    env_before = dict(os.environ)
+
+    # Load .env with override=True
+    load_dotenv(override=True)
+
+    # Capture the environment variables after loading .env
+    env_after = dict(os.environ)
+
+    # Identify overridden variables
+    overridden_vars = {
+        key: {'before': env_before[key], 'after': env_after[key]}
+        for key in env_before
+        if key in env_after and env_before[key] != env_after[key]
+    }
+
+    # Print the user if any environment variables were overridden
+    if overridden_vars:
+        pp.pretty_print("The following environment variables were overridden:", pp.Colors.WARNING)
+        for key, values in overridden_vars.items():
+            pp.pretty_print(f"{key}: {values['before']} -> {values['after']}", pp.Colors.WARNING)

README.md

@@ -49,6 +49,14 @@ export ANTHROPIC_API_KEY="your_anthropic_api_key"
 
 Replace `your_etherscan_api_key`, `your_anthropic_api_key` with your actual API keys.
 
+Alternatively, you can set these environment variables in a `.env` file in the current working directory where you use the tool:
+
+```sh
+ETHSCAN_API_KEY=your_etherscan_api_key
+ANTHROPIC_API_KEY=your_anthropic_api_key
+```
+
+
 Additionally, set the `QUORUM_PATH` environment variable to specify where the repositories and diffs will be saved:
 
 ```sh

requirements.txt

@@ -11,3 +11,4 @@ jinja2
 langchain-anthropic
 langgraph
 langchain_community
+python-dotenv