pandas variable name label code example

Example 1: change column names pandas

df.columns = ['A','B']

Example 2: df.rename(index=str, columns={"A": "a", "C": "c"}) what does index=str means

>>> df.index
RangeIndex(start=0, stop=3, step=1)
>>> df.rename(index=str).index
Index(['0', '1', '2'], dtype='object')