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But the problem is that I have to convert PHP to Python, not the opposite.

0 -> 1 1 100 EUR 20190101 11111111 Faktúra 1 SK6807200002891987426353 0 0
1 -> �W2+ 1 1 100 EUR 20190101 11111111 Faktúra 1 SK6807200002891987426353 0 0

0 -> 1 1 100 EUR 20190101 11111111 Faktúra 1 SK6807200002891987426353 0 0
1 -> ee7523b2 1 1 100 EUR 20190101 11111111 Faktúra 1 SK6807200002891987426353 0 0

<?php
$suma = "100";
$datum = "20190101";
$varsym = "11111111";
$konsym = "";
$specsym = "";
$poznamka = "Faktúra";
$iban = "SK6807200002891987426353";
$swift = "";
$d = implode("\t", array(
 0 => '',
 1 => '1',
 2 => implode("\t", array(
 true,
 $suma, // SUMA
 'EUR', // JEDNOTKA
 $datum, // DATUM
 $varsym, // VARIABILNY SYMBOL
 $konsym, // KONSTANTNY SYMBOL
 $specsym, // SPECIFICKY SYMBOL
 '',
 $poznamka, // POZNAMKA
 '1',
 $iban, // IBAN
 $swift, // SWIFT
 '0',
 '0'
 ))
));
// 0
echo "0 -> ".$d."\n";
$d = strrev(hash("crc32b", $d, TRUE)) . $d;
// 1
echo "1 -> ".$d."\n";
?>

 def crc32b(x):
 h = zlib.crc32(x)
 x='%08X' % (h & 0xffffffff,)
 return x.lower()
 t = "\t"
 gen = t.join(["1",
 "100", # SAME VARIABLES 
 "EUR",
 "20190101",
 "11111111",
 "",
 "",
 "",
 "Faktúra",
 "1",
 "SK6807200002891987426353",
 "",
 "0",
 "0"]
 )
 d = t.join([
 "", "1", gen])
 # 0
 print(f"0 -> {d}")
 hashD = crc32b(d.encode()) # OK
 hashD = hashD[::-1]
 # hashD = str(binascii.unhexlify(hashD))
 d = hashD + d
 # 1
 print(f"1 -> {d}")
 

But the problem is that I have to convert PHP to Python, not the opposite because, then I'm usit in the step 2 which I need to have equal output.

0 -> 1 1 100 EUR 20190101 11111111 Faktúra 1 SK6807200002891987426353 0 0
1 -> �W2+ 1 1 100 EUR 20190101 11111111 Faktúra 1 SK6807200002891987426353 0 0
2 -> 00004e00007715c242b04d5014490af1445dd61c1527ddc5f4461ca5886caf63fd8fbcf7df69c2035760ecb28d8171efdb409c0206996498ea7921e715172e60c210f923f070079ffba40000

-------
0 -> 1 1 100 EUR 20190101 11111111 Faktúra 1 SK6807200002891987426353 0 0
1 -> ee7523b2 1 1 100 EUR 20190101 11111111 Faktúra 1 SK6807200002891987426353 0 0
2 -> b'00006227515c7830302762275c783030325c7865305c7864386a34585c7862346d5c7838665c7865625c7863315c786266625c7839625c786339675c786332785c7831645c7862392c415c7862625c7831645c78663770365c786463735c786236572d606c225c7865355c7865635c7831345c7863655c786331205c7830635c7831315c7861375c7839345c7864665c7865635c7830365c7831652c22265c7866355c7862335c7866345c78616145585c7861625c7866395c7839615c7839645c7865645c7864625c7830305c7864355c7861643b5c7865365f5c7866645c786533405c78303027'

<?php
$suma = "100";
$datum = "20190101";
$varsym = "11111111";
$konsym = "";
$specsym = "";
$poznamka = "Faktúra";
$iban = "SK6807200002891987426353";
$swift = "";
$d = implode("\t", array(
 0 => '',
 1 => '1',
 2 => implode("\t", array(
 true,
 $suma, // SUMA
 'EUR', // JEDNOTKA
 $datum, // DATUM
 $varsym, // VARIABILNY SYMBOL
 $konsym, // KONSTANTNY SYMBOL
 $specsym, // SPECIFICKY SYMBOL
 '',
 $poznamka, // POZNAMKA
 '1',
 $iban, // IBAN
 $swift, // SWIFT
 '0',
 '0'
 ))
));
// 0
echo "0 -> ".$d."\n";
$d = strrev(hash("crc32b", $d, TRUE)) . $d;
// 1
echo "1 -> ".$d."\n";
$x = proc_open("/usr/bin/xz '--format=raw' '--lzma1=lc=3,lp=0,pb=2,dict=128KiB' '-c' '-'", [0 => ["pipe", "r"], 1 => ["pipe", "w"]], $p);
fwrite($p[0], $d);
fclose($p[0]);
$o = stream_get_contents($p[1]);
fclose($p[1]);
proc_close($x);
$d = bin2hex("\x00\x00" . pack("v", strlen($d)) . $o);
// 2
echo "2 -> ".$d."\n";
?>

 def crc32b(x):
 h = zlib.crc32(x)
 x='%08X' % (h & 0xffffffff,)
 return x.lower()
 t = "\t"
 gen = t.join(["1",
 "100", # SAME VARIABLES 
 "EUR",
 "20190101",
 "11111111",
 "",
 "",
 "",
 "Faktúra",
 "1",
 "SK6807200002891987426353",
 "",
 "0",
 "0"]
 )
 d = t.join([
 "", "1", gen])
 # 0
 print(f"0 -> {d}")
 hashD = crc32b(d.encode()) # OK
 hashD = hashD[::-1]
 # hashD = str(binascii.unhexlify(hashD))
 d = hashD + d
 # 1
 print(f"1 -> {d}")
 args = shlex.split("xz '--format=raw' '--lzma1=lc=3,lp=0,pb=2,dict=128KiB' -c -")
 process = subprocess.Popen(args, shell=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
 stderr=subprocess.PIPE)
 output = process.communicate(d.encode())
 pack = "\x00\x00" + str(struct.pack("H", len(d))) + str(output[0])
 d = binascii.hexlify(pack.encode())
 # 2
 print(f"2 -> {d}")
 

PYTHON def crc32b(x): h = zlib.crc32(x) x='%08X' % (h & 0xffffffff,) return x.lower()

 t = "\t"
 gen = t.join(["1",
 "100", # SAME VARIABLES 
 "EUR",
 "20190101",
 "11111111",
 "",
 "",
 "",
 "Faktúra",
 "1",
 "SK6807200002891987426353",
 "",
 "0",
 "0"]
 )
 d = t.join([
 "", "1", gen])
 # 0
 print(f"0 -> {d}")
 hashD = crc32b(d.encode()) # OK
 hashD = hashD[::-1]
 # hashD = str(binascii.unhexlify(hashD))
 d = hashD + d
 # 1
 print(f"1 -> {d}")
 

PYTHON

 def crc32b(x):
 h = zlib.crc32(x)
 x='%08X' % (h & 0xffffffff,)
 return x.lower()
 t = "\t"
 gen = t.join(["1",
 "100", # SAME VARIABLES 
 "EUR",
 "20190101",
 "11111111",
 "",
 "",
 "",
 "Faktúra",
 "1",
 "SK6807200002891987426353",
 "",
 "0",
 "0"]
 )
 d = t.join([
 "", "1", gen])
 # 0
 print(f"0 -> {d}")
 hashD = crc32b(d.encode()) # OK
 hashD = hashD[::-1]
 # hashD = str(binascii.unhexlify(hashD))
 d = hashD + d
 # 1
 print(f"1 -> {d}")