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pd.merge duplicate columns remove Code Example
remove duplicates based on two columns in dataframe 
df.drop_duplicates(['A','B'],keep= 'last')
remove duplicate columns python dataframe 
df = df.loc[:,~df.columns.duplicated()]
Source: stackoverflow.com
pd.merge duplicate columns remove 
#Create test data
df1 = pd.DataFrame(np.random.randint(100,size=(1000, 3)),columns=['A','B','C'])
df2 = pd.DataFrame(np.random.randint(100,size=(1000, 3)),columns=['B','C','D'])

pd.merge(df1, df2, how='inner', left_on=['B','C'], right_on=['B','C'])
Source: www.pauldesalvo.com



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Horje