[Python] How to check if file is added or in edit mode/checked out?

I'm looking for the commands for these things:

Does file exist in depo? And if so is it checked out?

Is local file added?

Thanks!

(extra info)

I've figured out the commands for add and edit, but I want to check the state first before i run these:

p4.run_add("C:\myfile.txt")
p4.run("edit", "//depot/myfile.txt")


the logic would be:

if file exists in depo and is not checked out:
check out file
else:
if file is not added:
add file

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