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[英]Python: How to set values of zero in a list/array/pd.Series to be the next non-zero value?
[英]with pd.Series method how to set column datatype as mutable datatype, such as list with str element
我想創建一個空的 pandas dataframe,
dictdata = {"intfield": pd.Series(dtype='int16'),
"floatfield": pd.Series(dtype='float32'),
"strfield": pd.Series(dtype='str'),
"listfield": pd.Series(dtype='array(str)'), ---- how to write here?
}
pddata = pd.DataFrame(dictdata)
pddata = pd.DataFrame(dictdata) 使用listfield(list of str element)成功創建一個空的dataframe數據
"listfield": pd.Series(dtype=object)
dtype=object
可以保存 Python object 的任意類型,因此可以在 listfield 列中存儲字符串lists
。
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