I have an existing dataframe with column name and data. I want to change index.name
for dataframe to be column's name. I am confused about multi - indexing
how do I do that? Because then I need to pass that dataframe to the to_sql
function which considers index as name of column for table.
Currently for me dataframe.index
is RangeIndex(start=0, stop=1669, step=1)
and dataframe.index.name
is None
I have done as follows :
dataframe.index.names = dataframe.columns
dataframe = dataframe.rename_axis(dataframe.columns)
It's giving me error as Length of new names must be 1, got 67
. 67 is number of column I have in dataframe.
It depends if MultiIndex
or not.
For single index need:
df.index.name = 'foo'
df = df.rename_axis('foo')
For MultiIndex
need:
df.index.names = ('foo', 'bar')
df = df.rename_axis(('foo', 'bar'))
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