Why my if elif logic in Python is not working.. Please explain : Dataframe(test1):

cons_flag	  

Mas

Mas

Wood

Wood

Wood

Mas

Conc

Wood

OUTPUT:

cons_flag	new_var

Mas	MASOM

Mas	MASOM

Wood	MASOM

Wood	MASOM

Wood	MASOM

Mas	MASOM

Conc	MASOM

Wood	MASOM

CODE USED:

    for x in test1['cons_flag']:
        if x.find('Mas'):
            test1['new_var']="MASOM"
        elif x.find('Wood'):
            test1['new_var']= "WOODEN"