random.randint() VS np.random.randint()
random.randint(a,b):a,b,returnONErandomnumberofbetweenaandb,bothaandbareincludedwhenacuqiringthenumber;random.randint(a,b,sizetuple):a,b),returnrandomnumber(s)ofbetweenaandb,aincludedandbisnotwhenacuqiringth