[Solved] What is wrong with this code snippet?template = PromptTemplate(template="Hi {name}", input_variables=["name"]) result = template.format(nam="Bob") print(result) | LangChain

LangChain - Prompt Templates

What is wrong with this code snippet?

template = PromptTemplate(template="Hi {name}", input_variables=["name"])
result = template.format(nam="Bob")
print(result)

Ainput_variables should be a string, not a list

BThe template string is missing curly braces

Cformat method cannot be used with PromptTemplate

DThe variable name in format is misspelled, causing a KeyError

Step-by-Step Solution

Solution:

Step 1: Compare variable names in template and format call
The template expects variable "name" but format uses "nam" which is incorrect.
Step 2: Understand the error caused by mismatch
This mismatch causes a KeyError because "name" is not provided in format arguments.
Final Answer:
The variable name in format is misspelled, causing a KeyError -> Option D
Quick Check:
Variable name mismatch = KeyError [OK]

Quick Trick: Check variable names match exactly in template and format [OK]

Common Mistakes:

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