[Python] python error unsupported operand type(s) for &: 'str' and 'str [duplicate]

Am getting an error and can't seem to figure it out

unsupported operand type(s) for &: 'str' and 'str'

def fun(row):
if row['A'] == 'H' & row['B'] == np.nan:
return row['A']

df['_newcol'] = df.apply(fun, axis=1)


any help or guidance is appreciated

Continue reading...