[Solved] Which of the following is the correct way to create a PromptTemplate in Langchain? — Ans: PromptTemplate(template="Hello {name}", input_variables=["name"]) | LangChain

LangChain - LangSmith Observability

Which of the following is the correct way to create a PromptTemplate in Langchain?

APromptTemplate(prompt="Hello {name}", args=["name"])

BPromptTemplate(name="Hello {name}", variables=["name"])

CPromptTemplate(text="Hello {name}", inputs=["name"])

DPromptTemplate(template="Hello {name}", input_variables=["name"])

Step-by-Step Solution

Solution:

Step 1: Recall PromptTemplate syntax
The correct constructor uses 'template' for the prompt text and 'input_variables' for placeholders.
Step 2: Check each option
Only PromptTemplate(template="Hello {name}", input_variables=["name"]) uses 'template' and 'input_variables' correctly; others use wrong parameter names.
Final Answer:
PromptTemplate(template="Hello {name}", input_variables=["name"]) -> Option D
Quick Check:
Correct parameters = template + input_variables [OK]

Quick Trick: Remember: 'template' and 'input_variables' are required keys [OK]

Common Mistakes:

MISTAKES

Master "LangSmith Observability" in LangChain

9 interactive learning modes - each teaches the same concept differently

More LangChain Quizzes

Which of the following is the correct way to create a PromptTemplate in Langchain?