我希望能够以字符串的形式获取变量的名称,但我不知道Python是否有那么多的自省功能。喜欢的东西:
>>> print(my_var.__name__)
'my_var'
我想这样做是因为我有一堆变量,我想把它们转换成一个字典,比如:
bar = True
foo = False
>>> my_dict = dict(bar=bar, foo=foo)
>>> print my_dict
{'foo': False, 'bar': True}
但我想要更自动的。
Python有locals()和vars(),所以我猜有一种方法。
你真的想这么做吗?
dict( (name,eval(name)) for name in ['some','list','of','vars'] )
例子
>>> some= 1
>>> list= 2
>>> of= 3
>>> vars= 4
>>> dict( (name,eval(name)) for name in ['some','list','of','vars'] )
{'list': 2, 'some': 1, 'vars': 4, 'of': 3}
我根据这个问题的答案写了一个简洁有用的函数。我把它放在这里,以防有用。
def what(obj, callingLocals=locals()):
"""
quick function to print name of input and value.
If not for the default-Valued callingLocals, the function would always
get the name as "obj", which is not what I want.
"""
for k, v in list(callingLocals.items()):
if v is obj:
name = k
print(name, "=", obj)
用法:
>> a = 4
>> what(a)
a = 4
>>|