python入门之语句，包括if语句、while语句、for语句，供python初学者参考。

//if语句例子 name = 'peirong'; if name == 'peirong': print 'this is peirong'; elif name== 'maojun': print 'this is maojun'; else: print 'others'; //while语句 i = 0; a = range(10); while i < a.__len__(): print i; i = i+1; //for语句 a = range(1,10); for i in a: print i; else: print 'The for loop is over!' //continue 语句 a = range(1000) for i in a: if i % 3 == 0: print 'chuyi 3 yu 0 '; elif i % 3 == 1: print 'chuyi 3 yu 1 '; else: continue