Program | Python Fiddle

import itertools
import random

mena = []

for x in range(6):
	while True:
		a = raw_input("Zadaj meno hraca"+str(x+1)+": ")
		if a is not "":
			break
	mena.append(a)

zoznam = list(itertools.permutations(mena,2))
zoznam2 = []
pocitadlo = 0

for y in range(len(zoznam)):
	for x in range(len(zoznam)):
		if zoznam[y][0] == zoznam[x][1]:
			#print str(zoznam[y][0]) +" a "+ str(zoznam[x][1])
			pass
		else:
			if pocitadlo != 25:
				pocitadlo+=1
				zoznam2.append(zoznam[x])

pocet_zapasov = 0
max_velkost_pola = len(zoznam2)-1
while True:
	try:
		pocet_zapasov = int(raw_input("\nZadaj pocet zapasov co chces vygenerovat: "))
		break
	except ValueError, NameError:
		print "Neplatny zapis"

for x in range(pocet_zapasov):
	nahoda = random.randint(0,max_velkost_pola)
	nahoda2 = random.randint(0,max_velkost_pola)

while True:
		if nahoda == nahoda2:
			nahoda2 = random.randint(0,max_velkost_pola)
		else:
			break

while True:
		if zoznam2[nahoda][0] == zoznam2[nahoda2][0] or zoznam2[nahoda][0] == zoznam2[nahoda2][1] or zoznam2[nahoda][1] == zoznam2[nahoda2][0] or zoznam2[nahoda][1] == zoznam2[nahoda2][1]:
			nahoda2 = random.randint(0,max_velkost_pola)
		else:
			print(str(zoznam2[nahoda][0])+" + "+(zoznam2[nahoda][1])+" vs "+str(zoznam2[nahoda2][0])+" + "+str(zoznam2[nahoda2][1]))
			break

Browser Version Not Supported

Due to Python Fiddle's reliance on advanced JavaScript techniques, older browsers might have problems running it correctly. Please download the latest version of your favourite browser.
Chrome 10+ Firefox 4+ Safari 5+
IE 10+

Let me try anyway!

Python Fiddle

Python Cloud IDE