Python - Get CPU Process Activity

import psutil, os, json

def get_folders(path):
	if os.access(path, os.X_OK) == True:
		files_and_folders = os.listdir(path)
		folders = []
		for f in files_and_folders:
			if f[0] not in ['.','~']:
				full_path = path+'/'+f
				if os.path.isdir(full_path) == True:
						folders.append(full_path)
		results = folders
	else:
		results = []
	return results

class Activity(object):
	def __init__(self):
		self.all = {
			'hardware' : self.hardware(),
			'processes' : self.processes()
		}

	def hardware(self,interval_in_seconds=1,mount_point='/Volumes'):
		disk_usage = []
		for mount in get_folders('/Volumes'):
			disk_usage.append({
				'mount_point': mount,
				'disk_percent': int(psutil.disk_usage(mount).percent),
				'disk_total_in_bytes': int(psutil.disk_usage(mount).total),
			})
		results = {
			'disk_usage': disk_usage,
			'cpu_percent': psutil.cpu_percent(interval=interval_in_seconds, percpu=True),
			'memory_virtual_percent': int(psutil.virtual_memory().percent),
			'memory_virtual_total_in_bytes': int(psutil.virtual_memory().total),
			'memory_swap_percent': int(psutil.swap_memory().percent),
			'memory_swap_total_in_bytes': int(psutil.swap_memory().total)
		}
		results['memory_total_percent'] = int(sum([results['memory_virtual_percent'],results['memory_swap_percent']])/2)
		results['memory_total_in_bytes'] = int(sum([results['memory_virtual_total_in_bytes'],results['memory_swap_total_in_bytes']])/2)
		results['cpu_count'] = len(results['cpu_percent'])
		results['cpu_percent_total'] = int(sum(results['cpu_percent'])/results['cpu_count'])		
		return results

	def processes(self,relevant_process_names=["Python","ffmpeg","mediainfo","ffprobe"]):
		pids = psutil.pids()
		relevant_processes = []
		for pid in pids:
			process_data = self.process_by_pid(pid)
			if process_data != False:
				if os.path.basename(__file__) not in process_data['command']:
					if process_data['name'].lower() in [item.lower() for item in relevant_process_names]:
						relevant_processes.append(process_data)
		results = {
			'number_of_processes': len(pids),
			'number_of_relevant_processes': len(relevant_processes),
			'relevant_processes': relevant_processes
		}
		return results

	def process_by_pid(self,pid):
		p = psutil.Process(pid)
		try:
			results = {
				'pid': pid,
				'name': p.name(),
				'command': p.cmdline(),
				'threads': p.num_threads(),
				'cpu_percent':p.cpu_percent()
			}
		except:
			results = False
		return results

	def process_by_key(self,key):
		processes = self.processes()
		results = []
		for process in processes['relevant_processes']:
			if key.lower() in ' '.join(process['command']).lower():
				results.append(process)
		if len(results) == 0:
			results = False
		return results

if __name__ == "__main__":
	activity = Activity()
	print json.dumps(activity.all, sort_keys=True,indent=4, separators=(',', ': '))