python3-How to store dictionaries in lists

高洛峰
Release: 2017-03-26 18:29:07
Original
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This article mainly introduces in detail the relevant information about the method of storing dictionaries in python3-list. Friends in need can refer to it

# Auther: Aaron Fan

#示例1:
#定义几个字典
alien_0 = {"color":"green", "points":5}
alien_1 = {"color":"yellow", "points":10}
alien_2 = {"color":"red", "points":15}

#把字典存入到列表aliens中
aliens = [alien_0, alien_1, alien_2]

#遍历这个列表
for alien in aliens:
   print(alien)

#示例2:
#创建一个用于存储外星人的空列表
aliens = []
#创建30个绿色的外星人
for alien_number in range(30):
   new_alien = {"color":"green", 'points':5, 'speed':'slow'}
   aliens.append(new_alien)
#显示前5个外星人
for alien in aliens[:5]:
   print(alien)
print("...")
#显示一共创建了多少个外星人
print("外星人的数量是: %d" % len(aliens))

#示例3:
#创建一个用于存储外星人的空列表
aliens = []
#创建30个绿色的外星人
for alien_number in range(30):
   new_alien = {"color":"green", 'points':5, 'speed':'slow'}
   aliens.append(new_alien)

for alien in aliens[0:3]:
   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

#显示前5个外星人
for alien in aliens[:5]:
   print(alien)
print("...")
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