如何使参数返回自己的名字?

Question

我的代码

for i in list_tasks:
globals()['icon1%s' % i].bind(on_press=lambda x: **print(#here I want to print his name)**

例如globals()['icon1%s' % i]是"icon1clock"我想在按下时打印他自己的名字(icon1clock)

Answer 1

棘手的部分是定义一个lambda表达式来包装另一个值，而不是名称。我不愿费心去尝试。编写一个函数，让为你创建回调;回调函数可以是变量的闭包。

def make_callback(name):
def _(x):
print(name)
return _

# *Not* icon1clock = ...
icons = {
'clock': ..., 
}
for i in list_tasks:
icons[i].bind(on_press=make_callback(i))