More than one playaction() in same BGE script I my BGE python script, I have

obj.playAction('man_clothAction',0,20,layer=0,play_mode=bge.logic.KX_ACTION_MODE_PLAY)
obj.playAction('man_clothAction',30,42,layer=0,play_mode=bge.logic.KX_ACTION_MODE_LOOP)


But when I run the code only last one runs.The difference is in the timeline. One is from 0-20 and other is from 30 to 42.
You can run actions simultaneously by setting them on different layers.

However, playing the same action will result in weird overlapping issues.  For example, when the loop starts at frame 30, it will inherit the positions etc set in the previous frames.  The first action will appear to do nothing.

You'll want to use separate actions and different layers.

obj.playAction('name_of_first_action', 0, 20, layer=0, play_mode=bge.logic.KX_ACTION_MODE_PLAY)
obj.playAction('name_of_other_action', 30, 42, layer=1, play_mode=bge.logic.KX_ACTION_MODE_LOOP)


And if you need to stop it later:

obj.stopAction(layer=1)