AttributeError（艰苦学习Python）

我只是想找出这段代码返回错误的原因。我有两个属性错误，不知道为什么

错误1

Traceback (most recent call last):
  File "ex39a.py", line 47, in <module>
    for console, abbrev in consoles.items():
AttributeError: 'str' object has no attribute 'items'

---

在

控制台

字典和

游戏

字典中循环时，不应使用相同的迭代器名称。这样，

控制台

以及

游戏

字典就被转换成其他字符串。试试这个：

consoles = {
    'Nintendo Entertainment System': 'NES',
    'SEGA Saturn': 'Saturn',
    'Playstation 3': 'PS3',
    'Xbox 360': '360',
    'Atari 2600': '2600'
}

games = {
    'NES': 'Castlevania',
    'Saturn': 'SEGA Rally Championship',
    'PS3': 'Assassins Creed 2'
}
games['360'] = 'Halo 3'
games['2600'] = 'Space Invaders'

print '-' * 10
print "The 360 has: ", games['360']
print "The 2600 has: ", games ['2600']

print '-' * 10
print "The Atari 2600s abbreviation is: ", consoles['Atari 2600']
print "The Nintendo Entertainment Systems abbreviation is: ", consoles['Nintendo Entertainment System']

print '-' * 10
print "The Atari 2600 has: ", games[consoles['Atari 2600']]
print "The Playstation 3 has: ", games[consoles['Playstation 3']]

print '-' * 10
# CHANGE HERE
for console, abbrev in consoles.items():
    print "%s is abbreviated %s" % (console, abbrev)

print '-' * 10
# CHANGE HERE
for abbrev, game in games.items():
    print "%s has the game %s" % (abbrev, game)
print '-' * 10
for console, abbrev in consoles.items():
    print "%s console is abbreviated %s and has the game %s" % (
        console, abbrev, games[abbrev])
print '-' * 10
#safely get an abbreviation for a console that might not be there
console = consoles.get('SEGA Dreamcast', None)

if not console:
    print "Sorry, that console is too shit to list."


game = games.get('Resident Evil: Code Veronica', 'Does Not Exist')
print "That game is for the: %s" % game 

---

您在控制台.items（）中为控制台重写了

控制台
的值，abbrev在consoles.items（）
中。与第36行中的游戏相同，
为abbrev，games
谢谢。我将“控制台”的每一个用法都改为“硬件”，将“游戏”改为“软件”，以消除混淆。
consoles = {
    'Nintendo Entertainment System': 'NES',
    'SEGA Saturn': 'Saturn',
    'Playstation 3': 'PS3',
    'Xbox 360': '360',
    'Atari 2600': '2600'
}

games = {
    'NES': 'Castlevania',
    'Saturn': 'SEGA Rally Championship',
    'PS3': 'Assassins Creed 2'
}
games['360'] = 'Halo 3'
games['2600'] = 'Space Invaders'

print '-' * 10
print "The 360 has: ", games['360']
print "The 2600 has: ", games ['2600']

print '-' * 10
print "The Atari 2600s abbreviation is: ", consoles['Atari 2600']
print "The Nintendo Entertainment Systems abbreviation is: ", consoles['Nintendo Entertainment System']

print '-' * 10
print "The Atari 2600 has: ", games[consoles['Atari 2600']]
print "The Playstation 3 has: ", games[consoles['Playstation 3']]

print '-' * 10
for consoles, abbrev in consoles.items():
    print "%s is abbreviated %s" % (consoles, abbrev)

print '-' * 10
for abbrev, games in games.items():
    print "%s has the game %s" % (abbrev, games)
#error  
print '-' * 10
for console, abbrev in consoles.items():
    print "%s console is abbreviated %s and has the game %s" % (
        console, abbrev, games[abbrev])
#error          
print '-' * 10
#safely get an abbreviation for a console that might not be there
console = consoles.get('SEGA Dreamcast', None)

if not console:
    print "Sorry, that console is too shit to list."


game = games.get('Resident Evil: Code Veronica', 'Does Not Exist')
print "That game is for the: %s" % game 

consoles = {
    'Nintendo Entertainment System': 'NES',
    'SEGA Saturn': 'Saturn',
    'Playstation 3': 'PS3',
    'Xbox 360': '360',
    'Atari 2600': '2600'
}

games = {
    'NES': 'Castlevania',
    'Saturn': 'SEGA Rally Championship',
    'PS3': 'Assassins Creed 2'
}
games['360'] = 'Halo 3'
games['2600'] = 'Space Invaders'

print '-' * 10
print "The 360 has: ", games['360']
print "The 2600 has: ", games ['2600']

print '-' * 10
print "The Atari 2600s abbreviation is: ", consoles['Atari 2600']
print "The Nintendo Entertainment Systems abbreviation is: ", consoles['Nintendo Entertainment System']

print '-' * 10
print "The Atari 2600 has: ", games[consoles['Atari 2600']]
print "The Playstation 3 has: ", games[consoles['Playstation 3']]

print '-' * 10
# CHANGE HERE
for console, abbrev in consoles.items():
    print "%s is abbreviated %s" % (console, abbrev)

print '-' * 10
# CHANGE HERE
for abbrev, game in games.items():
    print "%s has the game %s" % (abbrev, game)
print '-' * 10
for console, abbrev in consoles.items():
    print "%s console is abbreviated %s and has the game %s" % (
        console, abbrev, games[abbrev])
print '-' * 10
#safely get an abbreviation for a console that might not be there
console = consoles.get('SEGA Dreamcast', None)

if not console:
    print "Sorry, that console is too shit to list."


game = games.get('Resident Evil: Code Veronica', 'Does Not Exist')
print "That game is for the: %s" % game