Methods

Hi Skuperst,

Hit CTRL + Space in the IDE after the . (dot). Be patient sometimes as it can take time. It won't work at other times.

The current web IDE is imperfect, enough so it should be updated soon, hopefully I am not jinxing it right now 😊, with a much better alternative, where CTRL + Space will work well all the time.

Also, keep this nearby:

https://lean-api-docs.netlify.app/index.html

This is your Holy Refman guiding you in the right direction - towards the light of completed backtests.

😊

Fred

Thanks Fred for the quick answer.

I am not sure how can it help for the line above, where x is a loop variable. At what moment I have to hit CTRL + Space in order to see the methods of x? HasFundamentalData among them.

S.

Hi,

“After the dot”.

x.<CTRL + Space>

Ref :

Each time you enter a dot, auto-complete will pop up or you can also hit CTRL + Space. In all cases, it works better if you type slowly and if you wait. Even then, it can fail to work in some circumstances.

To use the linked API (which I called the Holy Refman above), you need to understand types and object-orientation. It is a cross-referenced catalog of every method and attribute of every class in every namespace in LEAN…

It is Christmas so we need to talk straight (and yes, re-start old family feuds 😊): the web IDE is not a proper IDE. It's getting changed… more on this later on. In a proper IDE (the reason why some develop their algorithms locally), you have easy access to all of that. But kick back, a proper IDE is coming up for the web.

Fred

Thanks Fred. For the reply nd the link.

I wish you Happy Christmas and (const x=0) feuds in your family in year n≥2022.

Probably I didn't explain well my issue. The slow typing and patience have nothing to do with it :)

Take for instance coarse, the CoarseFilter argument. It's a list. It's entries have certain methods. In [x for x in coarse] I can add the condition if x.HasFundamentalData because coarse[0]  (and all other elements) has this method, HasFundamentalData. There is, however, no way to learn about this or any other method using CTRL + Space. Even if I type x=coarse[0] in one line and x. right below, the CTRL + Space option will give nothing, since it would require compilation. It works, for example, when I type self. and wait for the Buy option to appear: self is a reserved word, so the dot is “suggestive”. On the other hand, x. means nothing before the compilation. 

Thank you.

Hi Skuperst,

😊

I'll spare you from my comments on that last post. But for your own amazement on this Boxing Day, take any of your Python code that works and change “self” by a word of your choosing, say “hello”, in the code…

Like:

def my_method(hello, coarse):
	hello.my_dict["hey"] = ...

It will work perfectly.

“self” is not a reserved word in Python - it is just another variable which is named “self” by convention.

That being said, if CTRL + Space does not work for you, use the Holy Refman (API docs):

https://lean-api-docs.netlify.app/index.html

You'll find all methods for anything and whatever and everything…

Cheers,

Fred