fix: avoid attempts of using blank environment variables as api keys

[zimeg]

Some confusion might arise if environment variables are set as empty strings! These providers might still appear in dropdown selections, but will not have a valid token to use.

Preview

$ echo $OPENAI_API_KEY

A quick workaround might unset this variable altogether:

$ unset OPENAI_API_KEY

bolt-python-ai-chatbot/ai/providers/anthropic.py

Lines 22 to 23 in 2d9d836

	def __init__(self):
	self.api_key = os.environ.get("ANTHROPIC_API_KEY")

bolt-python-ai-chatbot/ai/providers/openai.py

Lines 19 to 20 in 2d9d836

	def __init__(self):
	self.api_key = os.environ.get("OPENAI_API_KEY")

Note

The vertex provider has a guard for this when checking if a Google project should be used:

bolt-python-ai-chatbot/ai/providers/vertexai.py

Lines 72 to 78 in 2d9d836

	def __init__(self):
	self.enabled = bool(os.environ.get("VERTEX_AI_PROJECT_ID", ""))
	if self.enabled:
	vertexai.init(
	project=os.environ.get("VERTEX_AI_PROJECT_ID"),
	location=os.environ.get("VERTEX_AI_LOCATION"),
	)