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def demo1(): return int(raw_input('ÇëÊäÈëÕûÊý:')) def demo2(): return demo1() #ÀûÓÃÒì³£µÄ´«µÝÐÔ£¬ÔÚÖ÷³ÌÐòÖв¶»ñÒì³£ try: print demo2() except Exception as result: print 'δ֪´íÎó %s' % result
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def input_passwd(): #1.ÌáʾÓû§ÊäÈëÃÜÂë pwd = raw_input('ÇëÊäÈëÃÜÂë') #2.ÅжÏÃÜÂëµÄ³¤¶È >-=8,¾Í·µ»ØÓû§ÊäÈëµÄÃÜÂë if len(pwd) >= 8 : return pwd #3.<8,Ö÷¶¯Å׳öÒì³£ print 'Ö÷¶¯Å׳öÒì³£' #1.´´½¨Òì³£¶ÔÏó(¿ÉÒÔÌí¼Ó´íÎóÐÅÏ¢) ex = Exception('ÃÜÂ볤¶È²»¹»') raise ex #×¢Ò⣺ֻÅ׳öÒì³£¶ø²»²¶»ñÒì³££¬´úÂë»á³ö´í try: print input_passwd() except Exception as result: print result
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title = 'Ä£¿é1' #º¯Êý def say_hello(): print 'ÎÒÊÇ %s' % title #Àà class Cat(object): pass
test2:
title = 'Ä£¿é2' #º¯Êý def say_hello(): print 'ÎÒÊÇ %s' % title #Àà class Dog(object): pass
1.Ä£¿é-01
__name__ÊôÐÔ __name__ÊôÐÔ¿ÉÒÔ×öµ½£¬²âÊÔÄ£¿éÄڵĴúÂëÖ»ÔÚ²âÊÔÇé¿öϱ»ÔËÐУ¬¶øÔÚ±»µ¼Èëʱ²»»áÖ´ÐÐ __name__ÊÇpythonµÄÒ»¸öÄÚÖÃÊôÐÔ£¬¼Ç¼×ÅÒ»¸ö×Ö·û´® Èç¹ûÊDZ»ÆäËûÎļþµ¼Èëʱ£¬__name__¾ÍÊÇÄ£¿éÃû Èç¹ûÊǵ±Ç°Ö´ÐеijÌÐò£¬__name__¾ÍÊÇ_mian_
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#ÔÚµ¼ÈëÄ£¿éʱ£¬Ã¿¸öµ¼ÈëÓ¦¶ÀÕ¼Ò»ÐÐ import test1 import test2 test1.say_hello() test2.say_hello() dog = test2.Dog() print dog cat = test1.Cat() print cat
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#ʹÓÃasÖ¸¶¨Ä£¿éµÄ±ðÃû£¨´óÍÕ·åÃüÃû·¨£© import test1 as CatModule import test2 as DogModule DogModule.say_hello() CatModule.say_hello() dog = DogModule.Dog() print dog cat = CatModule.Cat() print cat
4.Ä£¿é-04
from test1 import Cat from test2 import say_hello from test1 import say_hello as test1_say_hello say_hello() test1_say_hello() miaomiao = Cat()
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import random rand = random.randint(0,10) print rand
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def func(num,p): assert (p != 0),'p²»ÄÜΪ0' return num / p print func(10,2)
7.Ä£¿é-07
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# ÒÔ×·¼Ó·½Ê½·¨¿ªÎļþ # Èç¹û¸ÃÎļþ´æÔÚ£¬ÎļþÖ¸Õë»á·ÅÔÚÎļþµÄĩβ # Èç¹ûÎļþ²»´æÔÚ£¬´´½¨Îļþ²¢Ð´Èë # 1.´ò¿ªÎļþ file = open('README','a') # 2.дÈëÎļþ file.write('linux') # 3.¹Ø±ÕÎļþ file.close()
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#1.´ò¿ªÎļþ #Ô´ÎļþÒÔÖ»¶ÁµÄ·½Ê½´ò¿ª file_read = open('README') #Ä¿±êÎļþÒÔдµÄ·½Ê½´ò¿ª file_write = open('README_COPY','w') #´ÓÔ´ÎļþÖжÁÈ¡ÄÚÈÝ text = file_read.read() #½«¶ÁÈ¡µ½µÄÄÚÈÝдµ½Ä¿±êÎļþÖÐ file_write.write(text) #¹Ø±ÕÎļþ file_read.close() file_write.close()
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filename = 'pi_digits' with open(filename) as file_object: for line in file_object: print line
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filename = 'linux' with open(filename,'w') as file_object: file_object.write('I love python.\n') file_object.write('I love linux.')
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filename = 'linux' with open(filename,'a') as file_object: file_object.write('I love python.\n') file_object.write('I love linux.')
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import json username = raw_input('what is your name?') filename = 'username.json' with open(filename,'w') as f_obj: json.dump(username,f_obj) print 'We will remember you when you come back,%s' % username
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import json filename = "username.json" with open(filename) as f_obj: username = json.load(f_obj) print 'Welcome back, %s' % username
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import json filename = "username.json" try: with open(filename) as f_obj: username = json.load(f_obj) except ValueError: username = raw_input("What is you name? ") with open(filename,"w") as f_obj: json.dump(username,f_obj) print "We'll remember you when you come back %s" % username #ÒÀÀµÓÚtry´úÂë¿é³É¹¦Ö´ÐеĴúÂë¶¼Ó¦·Åµ½else´úÂë¿éÖÐ: else: print "Welcome back %s " % username
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