pandas replace first column name code example

Example 1: python: change column name

df = df.rename(columns = {'myvar':'myvar_new'})

Example 2: change specific column name pandas

df_new = df.rename(columns={'A': 'a'}) #change a from A

Example 3: rename row pandas

>>> df.rename({1: 2, 2: 4}, axis='index')
   A  B
0  1  4
2  2  5
4  3  6