ValueError：太多的值无法在 Python 字典中解压
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ValueError: too many values to unpack in Python Dictionary
提问by Netorica
I have a function that accepts a string, list and a dictionary
我有一个接受字符串、列表和字典的函数
def superDynaParams(myname, *likes, **relatives): # *n is a list and **n is dictionary
print '--------------------------'
print 'my name is ' + myname
print 'I like the following'
for like in likes:
print like
print 'and my family are'
for key, role in relatives:
if parents[role] != None:
print key + ' ' + role
but it returns an error
但它返回一个错误
ValueError: too many values to unpack
值错误：解包的值太多
my parameters are
我的参数是
superDynaParams('Mark Paul',
'programming','arts','japanese','literature','music',
father='papa',mother='mama',sister='neechan',brother='niichan')
采纳答案by Martijn Pieters
You are looping over a dictionary:
您正在遍历字典：
for key, role in relatives:
but that only yields keys, so one single object at a time. If you want to loop over keys and values, use the dict.items()method:
但这只会产生keys，所以一次一个对象。如果要遍历键和值，请使用以下dict.items()方法：
for key, role in relatives.items():
On Python 2, use the dict.iteritems()method for efficiency:
在 Python 2 上，使用dict.iteritems()方法提高效率：
for key, role in relatives.iteritems():
回答by Lucas Kauffman
You should use an iterator instead to iterate over the items:
您应该使用迭代器来迭代项目：
relatives.iteritems()
for relative in relatives.iteritems():
//do something
