pyQt5 attributes suggestion when typing dot

[webgiorgio]

I have trouble with finding out the possible attributes of an object.
For example, I wrote

btn = QPushButton(self)
btn.setText('push me')

but when I type a new line

btn.

I don't get any suggestion. Why?
I am using Spyder, with Python3.6 and Qt5. Shall I change editor? Pycharm?

[JonB]

@webgiorgio
I use PyCharm with PyQt5 and it's great, including completions; it's also an excellent debugger, which is petty important. I know nothing about "Spyder". In the case you show, as you type the . after btn PyCharm would indeed get the necessary information from PyQt to show the available completions.