Viewing trace details and latency in LangChain - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to enable tracing in LangChain.

LangChain

from langchain import [1]

tracer = [1]()

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ATracing

Btrace

CTracer

DTrace

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'trace' instead of the class name.

Confusing 'Tracing' with 'Tracer'.

The Tracer class is used to enable tracing in LangChain.

2fill in blank

medium

Complete the code to attach the tracer to the LangChain client.

LangChain

from langchain import LangChainClient

client = LangChainClient()
client.[1] = tracer

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Atracer

Btracing

Ctrace

Dtracer_enabled

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'trace' instead of 'tracer' as the attribute name.

Trying to enable tracing with a boolean attribute.

The client uses the tracer attribute to attach the tracer instance.

3fill in blank

hard

Fix the error in printing the latency from the trace details.

LangChain

trace_details = tracer.get_trace()
print(f"Latency: {trace_details.[1] ms")

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Alatency

Bduration

Ctime

Ddelay

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'latency' which is not the attribute name.

Using 'time' or 'delay' which do not exist on trace details.

The correct attribute to get latency is duration in milliseconds.

4fill in blank

hard

Fill both blanks to filter trace spans by operation name and minimum latency.

LangChain

filtered_spans = [span for span in tracer.get_trace().spans if span.[1] == '[2]' and span.duration > 100]

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Aoperation_name

Bname

Coperation

Dop

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'operation' or 'op' which are not the correct attribute names.

Confusing the attribute name with the value to compare.

The span attribute for the operation is operation_name, and the value to filter by is name.

5fill in blank

hard

Fill all three blanks to create a dictionary of span names and their latencies for spans longer than 200 ms.

LangChain

latency_dict = {span.[1]: span.[2] for span in tracer.get_trace().spans if span.[3] > 200}

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Aoperation_name

Bduration

Cduration_ms

Dlatency

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'duration_ms' which is not the attribute name.

Using 'latency' which does not exist as an attribute.

Use operation_name for the key, and duration for the latency attribute and comparison.