#!/usr/bin/python3

def main():
	#imutable
	a=3
	b=4.5
	c=2+10j
	d=True
	e="h"
	print("results:",a,",",b)
	print("real=",c.real)
	print("imag=",c.imag)
	print("type=",type(a),"id=",id(a))
	a=4.4
	print("id=", id(a))
	a=5
	print("id=", id(a))
	#format
	print("results={},{}".format(a,b))
	print(f'Results={a},{b}')
	print ("Results="+str(a)+","+str(b))
	a=2
	for i in range(1,10,1):
		print(i,end=",")
	print("")
	i=1
	while i<10:
		print(i,end=",")
		i+=1
	print("")
	i=1
	while True:
		if i>=10:
			break
		print(i,end=",")
		i+=1
	k=None
	if (k):
		print("exist")
	else:
		print("no k")
	if (k==None):
		print("tpt")
	else:
		print(type(k))

if __name__=="__main__":
	main()