1、print语句： print ‘hello world!’ print “hello world!” print ‘hello %s!’%(‘world’) 2、流程控制： if: a = 1;b = 2 if (a == b): print ‘a = b’ elif (a > b): print ‘a > b’ elif (a < b): print 'a < b' else: print '$%$#$%' for each : array = [1,2,3,4] total = 0 for i in array: total +=i print total while: while 1 > 2 pass 3、数据类型： 链表：array=[1,2,3,4] print array result:[1,2,3,4] 散列： print set ([1,2,3,4,4]) result:set([1,2,3,4]) set1 = set([1,2,3,4,5]) set2 = set([1,2,3,4,6]) print set1-set2 result:set([5]) print set1&set2 result:set([1,2,3,4]) print set1|set2 result:set([1,2,3,4,5,6]) 字典： dict = {} dict[‘zs’] = 12 dict[‘ls’] = 25 dict[‘ww’] = 36 for key in dict.keys(): print ‘%s%s’%(key,dict[key]) result:ww36 ls25 zs12 4、文件读写： f = file(“d:\work\a.txt”,”r”) print f.read() f.close() #文件流需关闭 with open (“d:\work\a.txt”,”r”) as f: print f.read() with open (“d:\work\b.txt”,”w”) as f: f.write(“i am ok!”)