[Share] get all attrs for all ui elements

[Phuket2]

This is a re-share. I was looking for something today and come across this. It's just some code to get all unique attrs across all ui elements. Just updated with a nice addition from @ccc. It looks long and bulky. But it's just all the comments and trying to show it easily in my opinion. Below that, I do the same share without comments and condensing the functions. Just to show about sharing. Normally when I share, I don't try to condense everything. I go more for the understanding side of things. Not sure what's better.

# Phuket2 , Pythonista Forums (Python profiency, not much)
# date - 7 oct 2016
# works for python 2 or 3
'''
	get_all_attrs_set - the main function of interest
	
	iterates over a list of all the ui Elements, and retuns a set of 
	all the unique attrs for all the ui Elements combined.
	
	i am sure this could be tighten up more. But i think the readabilty
	is ok now. if not for ui.NavigationView, i would have tried to use 
	a list comp rather than the for. I could have tried to special case
	it, but i think personally this is more clear given what it is. 
'''

import ui, pprint, inspect

'''
	# 7 oct 2016
	This was hard coded before. Have commented it out now. i have left 
	it in just to show the lesson i learnt.  only recently also :(
	@ccc provided the list comp in the func get_ui_classes() that 
	totally negates having to create a static list.
	
_ui_controls = \
	[
		ui.View, ui.Button, ui.ButtonItem, ui.ImageView, ui.Label,
		ui.NavigationView, ui.ScrollView, ui.SegmentedControl,
		ui.Slider, ui.Switch, ui.TableView, ui.TextField, ui.TextView,
		ui.WebView, ui.DatePicker, ui.ActivityIndicator, ui.TableViewCell
	]
'''

def get_ui_classes():
	# thanks @ccc
    return [c for _, c in inspect.getmembers(ui) if hasattr(c, 'superview')]
    
_ui_controls = get_ui_classes() 
    	
def get_full_dict(obj):
	# get all the dict attrs for obj, no filter
	return {k: getattr(obj, k) for k in dir(obj)}

def get_all_attrs_set():
	# return a set of unique attrs across all ui_elements
	# sets doing all the hard work with the union operator '|'
	s = set()
	for ctl in _ui_controls:
		try:
			s = s | set(get_full_dict(ctl()))
		except:
			# handle differently for ui.NavigationView, it needs a
			# ui.View as a param
			if ctl is ui.NavigationView:
				s = s | set(get_full_dict(ctl(ui.View())))
			else:
				# print out a control type if an error produced we
				# do not handle
				print(ctl)
	return s
	
if __name__ == '__main__':
	# pprint prints out a nice easy to view, sorted list of the attrs
	pp = pprint.PrettyPrinter(indent=4, width=80)
	attr_set = get_all_attrs_set()
	pp.pprint(attr_set)
	print('Number of unique attrs across all ui elements (not filtered) - {}'.format(len(attr_set)))
	print()
	print('python 3.5x reports 155 items, python 2.7x reports 149 items. the difference lays in the attrs starting with _')

The same result, just condensed and comments removed.

import ui, pprint, inspect

def get_all_attrs_set():
	s = set()
	for ctl in [c for _, c in inspect.getmembers(ui) if hasattr(c, 'superview')]:
		try:
			s = s | set({k: getattr(ctl, k) for k in dir(ctl)})
		except:
			if ctl is ui.NavigationView:
				s = s | set({k: getattr(ctl, k) for k in dir(ctl(ui.View()))})
			else:
				print(ctl)
	return s
	
if __name__ == '__main__':
	# pprint prints out a nice easy to view, sorted list of the attrs
	pp = pprint.PrettyPrinter(indent=4, width=80)
	attr_set = get_all_attrs_set()
	pp.pprint(attr_set)
	print('Number of unique attrs across all ui elements (not filtered) - {}'.format(len(attr_set)))
	print()
	print('python 3.5x reports 155 items, python 2.7x reports 149 items. the difference lays in the attrs starting with _')
```python