KP <kai.pet...@gmail.com> writes: > Given: > > cfg = {'c': ('3840', '1024'), > 'p1': {'gpio': '1', 'id': '4', 'coord': ('0', '0', '1280', '1024')}, > 'p2': {'gpio': '2', 'id': '5', 'coord': ('1280', '0', '2560', '1024')}, > 'p3': {'gpio': '3', 'id': '6', 'coord': ('2560', '0', '3840', '1024')}} > > for config in cfg: > if config != 'canvas': > print config
Given the above data, none of the keys equal 'canvas', so the comparison is redundant if that's the data set. The chosen names are also confusing. It implies that each item of ‘cfg’ is a ‘config’. Can you choose names that better communicate the semantics of that data structure? > Is there an idiom that combines the 'for...' & the 'if..' lines into one? This is an opportunity to learn generator expressions:: for item in (x for x in cfg if x != canvas): print item <URL:https://docs.python.org/3/reference/expressions.html#generator-expressions> You will learn about these by working through the Python tutorial, from beginning to end <URL:https://docs.python.org/3/tutorial/>. Don't skip anything, and experiment with each example to understand it before continuing. -- \ “Anyone who believes exponential growth can go on forever in a | `\ finite world is either a madman or an economist.” —Kenneth | _o__) Boulding | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list