koalas typeerror column assignment doesn't support type ndarray

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1. Typeerror: int object does not support item assignment [SOLVED]

   

2. read_csv appear ：TypeError: 'bool' object is not iterable · Issue #1464 · databricks/koalas · GitHub

   

3. When using drop on koalas dataframe and then merge, dropped columns persist · Issue #782

   

4. pyspark

   

5. pyspark

   

6. python