I have simple class like this
class MyClass():
def test(self):
print "Calling Test"
Then i create a list:
lobj=[MyClass() for i in range (100)]
Now I want to iterate each object in lobj and invoke its medthod test().
I know i can use for loop. However, i wonder if there is any other way (just to avoid the for loop when the list is relatively large)? For example
lobj[:].test()
...I wonder if there is any other way (just to avoid the for loop when the list is relatively large)?
Yes. You can use the built-in function map() and a lambda function. If you want to just call the method on each element, do:
map(lambda x:x.test(), lobj)
And if you want to store the results in a list:
v = map(lambda x:x.test(), lobj)
The best you can do is:
[i.test() for i in lobj]
This calls the method but then doesn't store the result anywhere so the list gets discarded after it is done calling the method for all the instances.
testfunction?forloop? Any thing that calls a method on each object is going to do exactly the same thing.