Python attribute name with a variable in it

Question

I am making a desktop programm with Qt+Python and currently I am facing a problem calling some attributes with variable in their names

self.checkBox_Answer1.clear()
self.checkBox_Answer2.clear()
self.checkBox_Answer3.clear()
self.checkBox_Answer4.clear()

Number is the variable, so I want something like

self."checkBox_Answer%d" % (A).clear()

where "A" is my variable which is counted, but coding this way doesnt work

Also tried

self.str("checkBox_Answer"+"%d" % (A)).clear()  
self.checkBox_Answer+"%d" % (A).clear()

and nothing works

I know I can do something like

if A == 1:
    self.checkBox_Answer1.clear()
if A == 2:
    self.checkBox_Answer2.clear()
if A == 3:
    self.checkBox_Answer3.clear()
if A == 4:
    self.checkBox_Answer4.clear()

But isn't there more pythonic way to do this stuff?

yes stick your checkBox answers in a dictionary where the keys are `Answer1`, `Answer2`, etc... — MooingRawr, Nov 13 '17 at 22:00
did u try using .format() Something like https://stackoverflow.com/questions/5082452/python-string-formatting-vs-format — theBrainyGeek, Nov 13 '17 at 22:01

score 3 · Accepted Answer · answered Nov 13 '17 at 22:04

3

You can use reflection to get the name of the attribute using getattr. It will affect your performance but it's a cleanest way than a map.

It will looks like:

getattr(self, "checkBox_Answer"+"%d" % (A))

answered Nov 13 '17 at 22:04

Pau Trepat

697
1
6
24

1

Thanks! Woked as I wanted it to work `getattr(self, "checkBox_Answer"+"%d" % (A)).setText(buf[buf.find(")")+1:])` – PAXMA Nov 13 '17 at 22:25

score 0 · Answer 2 · answered Nov 13 '17 at 22:01

I would store these variables in a list:

self.checkboxAnswers = [checkBox_Answer1,etc...]

self.checkboxAnswers[A].clear()

You can access these variables in the list by using A. Note that lists start at index 0, so you'll have to increment A by one.

Python attribute name with a variable in it

2 Answers2