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5.1 ÔËÐÐ5.3.1С½Ú×îºóµÄʾÀý´úÂ룬²é¿´½á¹û²¢·ÖÎöÔ­Òò¡£

´ð£ºÔ­ÒòÊǶÔÓÚº¯ÊýµÄĬÈÏÖµ²ÎÊýÖ»»á±»´¦ÀíÒ»´Î£¬Ï´ÎÔÙµ÷Óú¯Êý²¢ÇÒ²»ÎªÄ¬ÈÏÖµ²ÎÊý¸³ÖµÊ±»á¼ÌÐøÊ¹ÓÃÉÏÒ»´ÎµÄ½á¹û£¬¶ÔÓÚÁбíÕâÑùµÄ½á¹¹£¬Èç¹ûµ÷Óú¯ÊýʱΪĬÈÏÖµ²ÎÊýµÄÁбí²åÈë»òɾ³ýÁËÔªËØ£¬½«»áµÃµ½±£Áô£¬´Ó¶øÓ°ÏìÏÂÒ»´Îµ÷Óá£

5.2 ±àдº¯Êý£¬ÅжÏÒ»¸öÕûÊýÊÇ·ñÎªËØÊý£¬²¢±àдÖ÷³ÌÐòµ÷Óøú¯Êý¡£

´ð£ºÕâÀï¸ø³öPython 3.4.2´úÂ룬Èç¹ûʹÓÃPython 2.7.8µÄ»°Ö»ÐèÒªÐÞ¸ÄÆäÖеÄprint()º¯ÊýΪprintÓï¾ä¼´¿É¡£ import math def IsPrime(v):

n = int(math.sqrt(v)+1) for i in range(2,n): if v%i==0: return 'No' else:

return 'Yes' print(IsPrime(37)) print(IsPrime(60)) print(IsPrime(113))

5.3 ±àдº¯Êý£¬½ÓÊÕÒ»¸ö×Ö·û´®£¬·Ö±ðͳ¼Æ´óд×Öĸ¡¢Ð¡Ð´×Öĸ¡¢Êý×Ö¡¢ÆäËû×Ö·ûµÄ¸öÊý£¬²¢ÒÔÔª×éµÄÐÎʽ·µ»Ø½á¹û¡£

´ð£ºÕâÀï¸ø³öPython 3.4.2´úÂ룬Èç¹ûʹÓÃPython 2.7.8µÄ»°Ö»ÐèÒªÐÞ¸ÄÆäÖеÄprint()º¯ÊýΪprintÓï¾ä¼´¿É¡£

def demo(v):

capital = little = digit = other =0 for i in v:

if 'A'<=i<='Z': capital+=1 elif 'a'<=i<='z': little+=1 elif '0'<=i<='9': digit+=1 else:

other+=1

return (capital,little,digit,other) x = 'capital = little = digit = other =0'

print(demo(x))

5.4 ÔÚPython³ÌÐòÖУ¬¾Ö²¿±äÁ¿»áÒþ²ØÍ¬ÃûµÄÈ«¾Ö±äÁ¿Âð£¿Çë±àд´úÂë½øÐÐÑéÖ¤¡£ ´ð°¸£º»á¡£ >>> def demo(): a=3 print a >>> a=5 >>> demo() 3 >>> a 5

5.5 ±àдº¯Êý£¬¿ÉÒÔ½ÓÊÕÈÎÒâ¶à¸öÕûÊý²¢Êä³öÆäÖеÄ×î´óÖµºÍËùÓÐÕûÊýÖ®ºÍ¡£ ´ð£ºÕâÀï¸ø³öPython 3.4.2´úÂ룬Èç¹ûʹÓÃPython 2.7.8µÄ»°Ö»ÐèÒªÐÞ¸ÄÆäÖеÄprint()º¯ÊýΪprintÓï¾ä¼´¿É¡£ def demo(*v): print(v)

print(max(v)) print(sum(v)) demo(1,2,3) demo(1,2,3,4) demo(1,2,3,4,5)

5.6 ±àдº¯Êý£¬Ä£ÄâÄÚÖú¯Êýsum()¡£

´ð£ºÕâÀï¸ø³öPython 3.4.2´úÂ룬Èç¹ûʹÓÃPython 2.7.8µÄ»°Ö»ÐèÒªÐÞ¸ÄÆäÖеÄprint()º¯ÊýΪprintÓï¾ä¼´¿É¡£ def Sum(v): s = 0 for i in v: s += i return s x = [1,2,3,4,5] print(Sum(x)) x = (1,2,3,4,5) print(Sum(x))

5.7 ±àдº¯Êý£¬Ä£ÄâÄÚÖú¯Êýsorted()¡£

´ð£ºÕâÀï¸ø³öPython 3.4.2´úÂ룬Èç¹ûʹÓÃPython 2.7.8µÄ»°Ö»ÐèÒªÐÞ¸ÄÆäÖеÄprint()º¯ÊýΪprintÓï¾ä¼´¿É¡£ def Sorted(v): t = v[::] r = [] while t:

tt = min(t) r.append(tt) t.remove(tt) return r

x = [1,3,5,2,1,0,9,7] print(x)

print(Sorted(x))

µÚ6ÕÂ ÃæÏò¶ÔÏó³ÌÐòÉè¼Æ

6.1 ¼Ì³Ð6.5½ÚÀý2ÖеÄPersonÀàÉú³ÉStudentÀ࣬Ìîдеĺ¯ÊýÓÃÀ´ÉèÖÃѧÉúרҵ£¬È»ºóÉú³É¸ÃÀà¶ÔÏó²¢ÏÔʾÐÅÏ¢¡£

´ð£ºPython 3.4.2´úÂëΪ

import types

class Person(object): #»ùÀà±ØÐë¼Ì³ÐÓÚobject£¬·ñÔòÔÚÅÉÉúÀàÖн«ÎÞ·¨Ê¹ÓÃsuper()º¯Êý def __init__(self, name = '', age = 20, sex = 'man'): self.setName(name) self.setAge(age) self.setSex(sex) def setName(self, name):

if not isinstance(name,str):

print('name must be string.') return

self.__name = name def setAge(self, age):

if not isinstance(age,int):

print('age must be integer.') return

self.__age = age def setSex(self, sex):

if sex != 'man' and sex != 'woman':

print('sex must be \ return

self.__sex = sex def show(self):

print(self.__name) print(self.__age) print(self.__sex) class Student(Person):

def __init__(self, name='', age = 30, sex = 'man', major = 'Computer'): #µ÷ÓûùÀ๹Ôì·½·¨³õʼ»¯»ùÀàµÄ˽ÓÐÊý¾Ý³ÉÔ± super(Student, self).__init__(name, age, sex)

self.setMajor(major) #³õʼ»¯ÅÉÉúÀàµÄÊý¾Ý³ÉÔ± def setMajor(self, major):

if not isinstance(major, str):

print('major must be a string.') return

self.__major = major def show(self):

super(Student, self).show()

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