如何删除数据帧中任何行的重复单元格?

我需要更新熊猫数据框,如下所示。有可能吗? [我非常感谢你们的时间和努力。很抱歉,我的问题在你们中间引起了混乱。我试图更新这个问题。再次感谢]

样本1:

import pandas as pd    
#original dataframe
data = {'row_1': ['x','y','x','y'], 'row_2': ['a', 'b', 'a', None]}
data=pd.DataFrame.from_dict(data, orient='index')
print(data)

#desired dataframe from data
data1 = {'row_1': ['x','y'], 'row_2': ['a', 'b']}
data1=pd.DataFrame.from_dict(data1, orient='index')
print(data1)

样本2:

import pandas as pd    
#original dataframe
data = {'row_1': ['x','y','p','x'], 'row_2': ['a', 'b', 'a', None]}
data=pd.DataFrame.from_dict(data, orient='index')
print(data)

#desired dataframe from data
data1 = {'row_1': ['x','y','p'], 'row_2': ['a', 'b']}
data1=pd.DataFrame.from_dict(data1, orient='index')
print(data1)