aliens = []
for alien_number in range(30):
new_alien = {'color': 'green', 'points': '5', 'speed': 'slow'}
aliens.append(new_alien)
for alien in aliens[:3]:
if alien['color'] == 'green':
alien['color'] = 'yellow'
alien['speed'] = 'medium'
alien['points'] = 10
elif alien['color'] == 'yellow':
alien['color'] = 'red'
alien['speed'] = 'fast'
alien['points'] = 15
for alien in aliens[:5]:
print(alien)
#输出结果没有变成想要的结果