Merge pull request #12 from jordantshaw/rc-0.2.2

Fixing bug with optional dependencies

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "pydantic-config"
 description = "Support for Pydantic settings configuration file loading"
-version = "0.2.1"
+version = "0.2.2"
 authors = [{name="Jordan Shaw"}]
 readme = "README.md"
 requires-python = ">=3.7"

src/pydantic_config/readers.py

@@ -1,7 +1,5 @@
 import configparser
 import json
-import toml
-import yaml
 
 
 def json_file_reader(file: str, encoding: str = None):
@@ -19,11 +17,25 @@ def ini_file_reader(file: str, encoding: str = None):
 
 def toml_file_reader(file: str, encoding: str = None):
     """ .toml file type reader """
+    try:
+        import toml
+    except ModuleNotFoundError as exc:
+        raise ModuleNotFoundError(
+            "No module named 'toml'. The 'toml' package is required when loading `.toml` config files."
+        )
+
     return toml.load(file)
 
 
 def yaml_file_reader(file: str, encoding: str = None):
     """ .yaml file type reader """
+    try:
+        import yaml
+    except ModuleNotFoundError as exc:
+        raise ModuleNotFoundError(
+            "No module named 'yaml'. The 'pyyaml' package is required when loading `.yaml/yml` config files."
+        )
+
     with open(file, 'r', encoding=encoding) as file:
         return yaml.safe_load(file)