docs: fix python demo code
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@ -887,13 +887,13 @@ The `poll` function is used to consume data in tmq. The parameter of the `poll`
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```python
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while True:
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res = consumer.poll(1)
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if not res:
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message = consumer.poll(1)
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if not message:
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continue
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err = res.error()
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err = message.error()
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if err is not None:
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raise err
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val = res.value()
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val = message.value()
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for block in val:
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print(block.fetchall())
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@ -906,10 +906,10 @@ The `poll` function is used to consume data in tmq. The parameter of the `poll`
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```python
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while True:
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res = consumer.poll(timeout=1.0)
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if not res:
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message = consumer.poll(1)
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if not message:
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continue
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err = res.error()
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err = message.error()
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if err is not None:
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raise err
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for block in message:
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@ -896,13 +896,13 @@ Consumer API 的 `poll` 方法用于消费数据,`poll` 方法接收一个 flo
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```python
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while True:
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res = consumer.poll(1)
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if not res:
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message = consumer.poll(1)
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if not message:
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continue
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err = res.error()
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err = message.error()
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if err is not None:
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raise err
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val = res.value()
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val = message.value()
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for block in val:
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print(block.fetchall())
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@ -915,10 +915,10 @@ Consumer API 的 `poll` 方法用于消费数据,`poll` 方法接收一个 flo
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```python
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while True:
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res = consumer.poll(timeout=1.0)
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if not res:
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message = consumer.poll(1)
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if not message:
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continue
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err = res.error()
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err = message.error()
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if err is not None:
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raise err
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for block in message:
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