我想从python字典中输出我的键值对,如下所示:
key1 \t value1
key2 \t value2
我想我可以这样做:
for i in d:
print d.keys(i), d.values(i)
但显然不是这样的,因为keys()和values()不带参数。
我想从python字典中输出我的键值对,如下所示:
key1 \t value1
key2 \t value2
我想我可以这样做:
for i in d:
print d.keys(i), d.values(i)
但显然不是这样的,因为keys()和values()不带参数。
当前回答
打印键值对,例如:
players = {
'lebron': 'lakers',
'giannis': 'milwakee bucks',
'durant': 'brooklyn nets',
'kawhi': 'clippers',
}
对于player,在players.items()中的club:
print(f"\n{player.title()} is the leader of {club}")
上面的代码,键值对:
'lebron': 'lakers', - Lebron is key and lakers is value
对于循环-在dictionary.item()中指定键和值:
现在打印(玩家名是俱乐部队长)。
输出为:
#Lebron is the leader of lakers
#Giannis is the leader of milwakee bucks
#Durant is the leader of brooklyn nets
#Kawhi is the leader of clippers
其他回答
>>> d={'a':1,'b':2,'c':3}
>>> for kv in d.items():
... print kv[0],'\t',kv[1]
...
a 1
c 3
b 2
或者,对于Python 3:
for k,v in dict.items():
print(k, v)
Python 2和Python 3
I是键,所以你只需要使用它:
for i in d:
print i, d[i]
Python 3
D.items()返回迭代器;要获得一个列表,需要自己将迭代器传递给list()。
for k, v in d.items():
print(k, v)
Python 2
你可以得到一个同时包含键和值的迭代器。D.items()返回一个(key, value)元组列表,而d.iteritems()返回一个提供相同元组的迭代器:
for k, v in d.iteritems():
print k, v
一本简单的字典:
x = {'X':"yes", 'Y':"no", 'Z':"ok"}
在Python 3中打印一个特定的(键,值)对(本例中是索引1处的pair):
for e in range(len(x)):
print(([x for x in x.keys()][e], [x for x in x.values()][e]))
输出:
('X', 'yes')
('Y', 'no')
('Z', 'ok')
下面是打印元组中所有对的一行程序:
print(tuple(([x for x in x.keys()][i], [x for x in x.values()][i]) for i in range(len(x))))
输出:
(('X', 'yes'), ('Y', 'no'), ('Z', 'ok'))
除了已经提到的方法之外。可以使用" viewitems " " viewkeys " " viewvalues "
>>> d = {320: 1, 321: 0, 322: 3}
>>> list(d.viewitems())
[(320, 1), (321, 0), (322, 3)]
>>> list(d.viewkeys())
[320, 321, 322]
>>> list(d.viewvalues())
[1, 0, 3]
Or
>>> list(d.iteritems())
[(320, 1), (321, 0), (322, 3)]
>>> list(d.iterkeys())
[320, 321, 322]
>>> list(d.itervalues())
[1, 0, 3]
或者使用itemgetter
>>> from operator import itemgetter
>>> map(itemgetter(0), dd.items()) #### for keys
['323', '332']
>>> map(itemgetter(1), dd.items()) #### for values
['3323', 232]