pandas how to get data that is equal to code example

Example 1: dataframe equals pandas

>>> exactly_equal = pd.DataFrame({1: [10], 2: [20]})
>>> exactly_equal
    1   2
0  10  20
>>> df.equals(exactly_equal)
True

Example 2: pandas get value not equal to

df[~df['column_name'].isin(['value_1', 'value_2'])]