Question

I have codes just like follows:

class test:
    def do_something():
        pass

test1 = test()
test2 = test()
test3 = test()
test4 = test()
test5 = test()
test6 = test()
test7 = test()
test8 = test()
test9 = test()
...

Now I need invoke each instance’s function, just like that:

test1.do_something()
test2.do_something()
test3.do_something()
test4.do_something()
test5.do_something()
test6.do_something()
test7.do_something()
test8.do_something()
test9.do_something()
...

Too many classes, so I thought may be a for loop can complete the work:

for i in range(1, 30):
    ("test" + str(i)).do_something()

Of course it doesn’t work, for string doesn’t have do_something() function, can anyone have any idea to realize the function?

Answer 1

Use a list or dict to store your variables. For example:

class Test:
    def doSomething(self):
        pass

tests = [Test() for i in range(9)]

# Now to invoke the functions:
tests[0].doSomething()
tests[1].doSomething()
 ...
tests[8].doSomething()

# or if you want to do them all at once:
for item in tests:
    item.doSomething()