Minimal example of URL validation

.gitignore

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+venv*/
+.mypy_cache/

requirements.txt

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+pydantic
+typing_extensions

validate.py

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+# This isn't how I would maintain/manage python code, but is intended to show 
+# a minimum example of how you could use python to validate `predefined_url.json`
+# Cheers!
+# - ZH
+"""Validate the JSON has valid URLs"""
+
+import json
+from pathlib import Path
+import sys
+# Because I saw you're using 3.10, we use this. If 3.11+, use 'from typing import Self'
+from typing_extensions import Self
+from pydantic import BaseModel, HttpUrl
+
+class PredefinedUrl(BaseModel):
+    """Predefined URL Entry"""
+    url: HttpUrl
+
+
+
+    @classmethod
+    def from_file(cls, file: Path) -> list[Self]:
+        """Load a list of predefined URLs from file"""
+        with file.open("r", encoding="utf8") as handle:
+            data: list[dict[str, str]] = json.load(handle)
+        return [cls.model_validate(x) for x in data]
+
+def main() -> None:
+    """Program main entry point"""
+    predefined_url = Path(sys.argv[1])
+    if not predefined_url.is_file():
+        raise FileNotFoundError(f"Could not find {predefined_url=}")
+    model = PredefinedUrl.from_file(predefined_url)
+    print(f"Model is valid: {model=}")
+
+
+if __name__ == "__main__": # pragma: no cover
+    main()