[Solved] Identify the error in this code snippet:template = PromptTemplate(template="Welcome {name}!", input_variables=["name"]) result = template.format("Alice") | LangChain

LangChain - Prompt Templates

Identify the error in this code snippet:

template = PromptTemplate(template="Welcome {name}!", input_variables=["name"])
result = template.format("Alice")

APromptTemplate requires a model parameter.

Binput_variables should be a dictionary, not a list.

CTemplate string must use $name instead of {name}.

Dformat() is called without keyword arguments.

Step-by-Step Solution

Solution:

Step 1: Check how format() is called
format() requires variables passed as keyword arguments like name="value".
Step 2: Identify the error
Calling format("Alice") passes a positional argument, causing a TypeError.
Final Answer:
format() is called without keyword arguments. -> Option D
Quick Check:
format() needs keyword arguments for variables [OK]

Quick Trick: Use keyword arguments in format(), e.g., format(name='Bob') [OK]

Common Mistakes:

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