• Recommended config_dict for pydantic.BaseModel

    It’s difficult to understand why the below is not the default of the pydantic.BaseModel since they look so basic, but anyhow, these are ones I found and keep using. extra=”forbid” prevents following from passing. protected_namespace=(“protected_”, ) makes it possible to use field name that starts with model_. Without it, model_name field causes a trouble.

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  • Finding all subclasses dynamically in python

    Python provide __subclass__ to find all subclasses but it doesn’t find a class if it’s not imported yet. One solution is dynamically import subclass. Assuming that ‘impl’ subdirectory contains subclasses, this is how one can do that. It’s dump of my current code, but you’ll get the idea.

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  • 화면 캡쳐후 chatgpt에 질문 자동 실행 루틴

    갤럭시 루틴입니다. 터치 매크로는 chatgpt 앱을 선택하고 녹화하면 되고 터치 시작 전에 delay를 1200ms 정도로 줍니다. 루틴을 빅스비 단축어에 연결합니다. 결과는 이렇습니다.

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  • plotly and drawing multiple lines in a single figure

    I started using plotly. It renders a nice looking chart by default and interactive. With some efforts, one can return json in the server to render it via js. Another benefit is that charts can be merged. It’s very useful in rendering two different lines, e.g., trainig data + test data in a single chart.…

  • Interactive plotly charts on jinja2 + flask

    It’s difficult to find explanation on how we can render plotly chart on flask + jinja, so I’m sharing my code snippets. First, in python, given a figure, turn that into json response of flask. The chart data will be served via /get_chart/<chart_name> Prepare js code that can render the given json. Following code inserts…

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  • twelvedata python api

    While I was looking for python api for crypto, I found twelvedata. It’s cheap and seems to be comprehensive. But I don’t like their python api, e.g., using pandas than polars, siliently setting number of rows to fetch even when start date is set. So I stopped using their api and wrote a small code…

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  • Sort values in each row of polars df

    If your data size isn’t too big, here’s an easy solution. Let’s say you have this data: Use this function to sort values across chosen columns but within each row. As an example, if we sort across [“A”, “C”]:

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  • How to suppress “Using categorical units to plot a list of strings that are all parsable as floats or dates.”

    If log level is set to INFO, “Using categorical units to plot a list of strings that are all parsable as floats or dates. If these strings should be plotted as numbers, cast to the appropriate data type before plotting.” may be observed when it’s not really relevant. Here’s how to suppress it.

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  • Outlier, drift detection

    I learned alibi-detect today and it looks great. It has many algorithms for outlier and drift detection. The page even has a link for youtube video that explains drift detection.

  • 웹사이트 성능 최적화

    소프트웨어 품질의 끝은 결국 측정과 최적화라고 생각하고, 측정이 모든 접근의 시작이자 끝이라고 생각한다. 측정은 목표를 설정할 수 있게 하고, 그 과정에서 목표 자체에 의미가 있는지 따져보게 한다. 하지만 기술적 지식으로 무장한 엔지니어들은 측정을 먼저 시작하기보다는 해결 방법과 수단을 먼저 떠올리게 되고 그것부터 적용 해 놓고 보려고 한다. 대부분의 경우에 적용되는 훌륭한 룰들은 있어서 그게 항상…

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