python中如果在while循环中return会导致循环中断

python中如果在while循环中直接return会导致循环中断，可以赋予变量再return 变量方式

[root@10.144.5.223 root]# cat test_while_return.py
count = 0
while (count < 6):
print 'The count is:', count
count = count + 1

print "Good bye!"

print '-'*20

while (count >= 3):
print 'The count is:', count
count -= 1
print "Good bye!"

print '-'*20

while (count != 0):
print 'The count is:', count
count -= 1
print "Good bye!"

print '#'*20

def checkstatus():
Checktimes = 3
Mysql_ok = 1

while (Checktimes != 0):
Checktimes -= 1
if Mysql_ok == 1:
print ('Mysql_ok',Mysql_ok)
return True
#exit( 0 )
else:
print ('Mysql_ok',dbip,Mysql_ok)
return False
#exit( 1 )

checkstatus()
print '*'*20

def checkstatus():
Checktimes = 3
Mysql_ok = True
while (Checktimes != 0):
Checktimes -= 1
if Mysql_ok == 1:
print ('Mysql_ok',Mysql_ok)

mysqlcheck=True
#exit( 0 )
else:
print ('Mysql_ok',dbip,Mysql_ok)
mysqlcheck=False
#exit( 1 )
return mysqlcheck
checkstatus()
print '+'*20
print checkstatus()
[root@10.144.5.223 root]#

[root@10.144.5.223 root]# python test_while_return.py
The count is: 0
The count is: 1
The count is: 2
The count is: 3
The count is: 4
The count is: 5
Good bye!
--------------------
The count is: 6
The count is: 5
The count is: 4
The count is: 3
Good bye!
--------------------
The count is: 2
The count is: 1
Good bye!
####################
('Mysql_ok', 1) #这里被中断只循环了一次
********************
('Mysql_ok', True)
('Mysql_ok', True)
('Mysql_ok', True)
++++++++++++++++++++
('Mysql_ok', True)
('Mysql_ok', True)
('Mysql_ok', True)
True
[root@10.144.5.223 root]#

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