littlely questions

• the count method in python can not ignore the empty string
• TypeError: 'function' object is not subscriptable in tensorflow
• How to yield one array element and keep other elements in pyspark DataFrame?
• Display python plotly graph in RMarkdown html document
• TypeError: unhashable type: 'list' when use groupby in python
• When scale the data, why the train dataset use 'fit' and 'transform', but the test dataset only use 'transform'?

littlely answers