Python基础_三种流程控制语句

三种控制流语句——if、while和for以及与它们相关的break和continue语句。它们是Python中最常用的部分，熟悉这些控制流是应当掌握的基本技能。

 

if例子和 while例子

number =23
flag = True
count = 0
max = 5

while flag:
	guess = int(raw_input('enter an integer:'))
	count = count +1
	if count >= max :
		print 'Game is over.you has used your times.try again later'
		flag = False

	if guess == number:
		print 'Congratulations,you win'
		flag = False
	elif guess < number:
		print 'less litter low...'
	else:
		print 'less litter larger...'
else:
	print ''		
print 'game is over.'

 

for例子

#print range(1,5)

for x in range(3):
	print x
else:
 	print 'The for loop is over'