Python pandas clean bad encoding in a data frame

clear_encoding.md

def clear(df):
    array = df.values
    for n,i in enumerate(array):
        for k,j in enumerate(i):
            if type(j) == str:
                try:
                     j.decode('ascii')
                except:        
                    array[n][k] = j.decode('utf-8')
            else:                 
                    array[n][k] = j.encode('utf-8')
    return pd.DataFrame(array)