feat: remove requests as a dep for get_abis.py script and add docs

substreams/ethereum-balancer/abi/README.md

@@ -7,3 +7,16 @@ We then can define all of the abis via `substreams_ethereum::Abigen::new` in our
 ## Recommendation
 
 It would be apt to convert (maybe through copilot) the python code into the `build.rs` file and then automate the `Abigen` functionality.
+
+## Usage
+
+Requires `python 3.8+`,
+
+```bash
+cd abi
+python get_abis.py
+```
+
+This will populate the files in the `abi` folder.
+
+When the `build.rs` file runs (when `rust-analyzer` activates or `cargo build` is manually ran), Abigen will generate new rust src files from the abis in the `src/abi` folder.

substreams/ethereum-balancer/abi/get_abis.py

@@ -3,8 +3,7 @@ import json
 import os
 import re
 import time
-
-import requests
+import urllib.request
 
 # Exports contract ABI in JSON
 
@@ -38,9 +37,8 @@ def __main__():
         print(f"Getting ABI for {name} at {addr} ({normalized_name})")
 
         try:
-            ...
-            response = requests.get(ABI_ENDPOINT.format(address=addr))
-            response_json = response.json()
+            with urllib.request.urlopen(ABI_ENDPOINT.format(address=addr)) as response:
+                response_json = json.loads(response.read().decode())
                 abi_json = json.loads(response_json["result"])
                 result = json.dumps(abi_json, indent=4, sort_keys=True)
                 with open(f"{normalized_name}.json", "w") as f: