Trim a returned value from a Kafka topic using python

Question

I have a simple python module as follows:

from kafka import KafkaConsumer

consumer = KafkaConsumer(
    'myTestTopic',
    bootstrap_servers=['localhost:9092'],
    auto_offset_reset='earliest',
    enable_auto_commit=True)

for message in consumer:
    message = message.value
    print(message)

This will return something like follows:

b'&name=bob&gender=M&type=student&sId=1204&note=temp&'

b'&name=bob&gender=M&type=student&sId=1204&'

My question is: Is there a neat way to remove/trim the first two characters e.g: (b') and the last character (') from each line that will be returned?

So essentially it will appear like:

&name=bob&gender=M&type=student&sId=1204&note=temp&

&name=bob&gender=M&type=student&sId=1204&

Does this answer your question? [Convert bytes to a string](https://stackoverflow.com/questions/606191/convert-bytes-to-a-string) — Aaron_ab, Dec 16 '19 at 14:25

score 2 · Accepted Answer · answered Dec 16 '19 at 14:23

2

That happens because the type of your response is bytes not string. You need to decode it, something like this should work:

message = str(message.value, encoding='utf-8')
print(message)

answered Dec 16 '19 at 14:23

marcos

4,473
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score 1 · Answer 2 · answered Dec 16 '19 at 14:26

1

do:

message.value.decode('utf-8')

answered Dec 16 '19 at 14:26

Aaron_ab

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Trim a returned value from a Kafka topic using python

2 Answers2