python函数调用变量

Question

def test():
    print 'test'

def test2():
    print 'test2'

test = {'test':'blabla','test2':'blabla2'}
for key, val in test.items():
    key() # Here i want to call the function with the key name, how can i do so?

Answer 1

You could use the actual function objects themselves as keys, rather than the names of the functions. Functions are first class objects in Python, so it's cleaner and more elegant to use them directly rather than their names.

test = {test:'blabla', test2:'blabla2'}

for key, val in test.items():
    key()

Answer 2

如果你想知道的是“当你在一个字符串中有它的名字时如何调用一个函数”，这里有一些很好的答案 - 从Python中用函数名称的字符串调用一个模块的函数

Answer 3

John has a good solution. Here's another way, using eval() :

def test():
        print 'test'

def test2():
        print 'test2'

mydict = {'test':'blabla','test2':'blabla2'}
for key, val in mydict.items():
        eval(key+'()')

Note that I changed the name of the dictionary to prevent a clash with the name of the test() function.

Answer 4

def test():
    print 'test'

def test2():
    print 'test2'

assign_list=[test,test2]

for i in assign_list:
    i()