Deadly Arthropod forensics challenge from Hackthebox

.py

# USB HID keyboard/keypad: http://www.usb.org/developers/hidpage/Hut1_12v2.pdf
keys={	'04':'a',
      	'05':'b',
        '06':'c',
        '07':'d',
        '08':'e',
        '09':'f',
        '0a':'g',
        '0b':'h',
        '0c':'i',
        '0d':'j',
        '0e':'k',
        '0f':'l',
        '10':'m',
        '11':'n',
        '12':'o',
        '13':'p',
        '14':'q',
        '15':'r',
        '16':'s',
        '17':'t',
        '18':'u',
        '19':'v',
        '1a':'w',
        '1b':'x',
        '1c':'y',
        '1d':'z',
        '1e':'1',
        '1f':'@',
        '20':'3',
        '21':'4',
        '22':'5',
        '23':'6',
        '24':'7',
        '25':'8',
        '26':'9',
        '27':'0',
        '28':'\n',
        '29':'ESC',
        '2a':'BACKSPACE',
        '2b':'\t',
        '2c':' ',
        '2d':'_',
        '2e':'=',
        '2f':'{',
        '30':'}',
        '31':'\\',
        '32':'#',
        '33':';',
        '34':"'",
        '35':'',
        '36':',',
        '37':'.',
        '38':'/',
        '50':'<',
        '4f':'>'	}

data=[]

# tshark -r deadly_arthropod.pcap -Tfields -e usb.capdata > capdata && cat capdata|cut -d: -f1,3 > lov_capdata && rm capdata
with open('lov_capdata','r') as f:
	for k in f.readlines():
		if k[:2] == '02':
			try:
				data.append(keys[k.split(':')[1].strip()].upper())
			except:
				pass
		elif k[:2] == '00':
			try:
				data.append(keys[k.split(':')[1].strip()])
			except:
				pass

_fstr=''.join(_ for _ in data)

print (f'{_fstr}%s\n')

idx=0
_reog=[]
for i in _fstr:
	if i == '<':
		idx-=1
		continue
	if i == '>':
		idx+=1
	else:
		_reog.insert(idx,i)
		idx+=1

fstr=''.join(_ for _ in _reog)
print (fstr.replace('<','').replace('>',''))