_component.py 文件源码

def encoders(obj):
    """Convert Python object to msgpack encodable ones."""
    try:
        # numpy isn't an explicit dependency of bowtie
        # so we can't assume it's available
        import numpy as np
        if isinstance(obj, (np.ndarray, np.generic)):
            # https://docs.scipy.org/doc/numpy/reference/arrays.scalars.html
            return obj.tolist()
    except ImportError:
        pass

    try:
        # pandas isn't an explicit dependency of bowtie
        # so we can't assume it's available
        import pandas as pd
        if isinstance(obj, pd.Index):
            return obj.tolist()
    except ImportError:
        pass

    if isinstance(obj, (datetime, time, date)):
        return obj.isoformat()

    return obj