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import MySQLdb
con = MySQLdb.connect(db="python")
cur = con.cursor()
count = cur.execute("select * from test")
print count
data = cur.fetchall()
print data
for d in data:
print d
import os
os.system('clear') # clear screen
count = cur.execute("delete from test where id =1")
print count
count = cur.execute("select * from test")
print count
cur.close()
con.commit()
con.close()

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pythonÖеÄÀà½Ðclass object,ÀàµÄʵÀý½Ðinstance object.
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2.ʵÀý»¯ÔòÊÇ´´½¨Ò»¸öÀàµÄʵÀýµÄ· ......

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while µÄÓ÷¨£º
while ºóÃæ¸úÌõ¼þ±í´ïʽ£¬(:)ºóÃæ¸úÓï¾ä¿é£¬Äã¿ÉÒÔÔÚÕâ¶ÎÓï¾ä¿éÀïÐÞ¸ÄÌõ¼þ±í´ïʽµÄijЩ±äÁ¿£¬µ±Ìõ¼þ±í´ïʽ Ϊ¼ÙµÄʱºòÍ˳öÑ­»·¡£ÀýÈ磺
flag = 5
while flag > 0:
#ÕâÀïÊÇÄãµÄ´úÂë
flag -= 1
#if flag == 3: break
#if flag == 3: continue
print flag
µ±È»ÄãÒ²¿ÉÒÔÔÚÊʵ ......

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     (1).µ±"print os.path.dirname(__file__)"ËùÔڽű¾ÊÇÒÔÍêÕû·¾¶±»ÔËÐеģ¬ ÄÇô½«Êä³ö¸Ã½Å±¾ËùÔÚµÄÍêÕû·¾¶£¬±ÈÈ磺
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