Python2 vs Python3

	Python2	Python3
print syntax	statement print "Hello World"	function print("Hello World")
int division	5 / 2 → 2 (same as //)	5 / 2 → 2.5 (always float)
range()	return list	return iterator
variable leakage (comprehension)	x = 10 y = [x for x in range(5)] print(x) # 4	x = 10 y = [x for x in range(5)] print(x) # 10
storage of str	ASCII (7bits)	Unicode (8bits)
string formatting	format "Hi, {}".format(name)	f-string f"Hi, {name}"