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1.Òì³£-01

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¿ÉÒÔÔö¼ÓtryÀ´²¶»ñÒì³£
try£º
 ³¢ÊÔÖ´ÐеĴúÂë
expect£º
 ³öÏÖ´íÎóµÄ´¦Àí

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try:
 num=int(raw_input('ÇëдÈëÒ»¸öÕûÊý£º'))
except:
 print 'ÇëÊäÈëÒ»¸öÕýÈ·µÄÕûÊý'
#ÎÞÂÛÊÇ·ñÊäÈë´íÎó¶î£¬³ÌÐò¶¼»áÕý³£Ö´ÐÐ
print '*' * 50

ÊäÈëÕýÈ·½á¹û£º

ÕâÀïдͼƬÃèÊö

ÊäÈë´íÎó½á¹û£º

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2.Òì³£-02

µ±python½âÊÍÆ÷Å׳öÒ쳣ʱ£¬×îºóÒ»ÐдíÎóÐÅÏ¢µÄµÚÒ»¸öµ¥´Ê£¬¾ÍÊÇ´íÎóÀàÐÍ¡£

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#1.ÌáʾÓû§ÊäÈëÒ»¸öÕûÊý
#2.ʹÓÃ6³ýÒÔÓû§ÊäÈëµÄÕûÊý²¢ÇÒÊä³ö
try:
 num = int(raw_input('ÇëÊäÈëÒ»¸öÕûÊý£º'))
 result = 6 / num
 print result
except ZeroDivisionError:
 print '³ý0´íÎó 0²»ÄÜ×ö³ýÊý'
except ValueError:
 print 'ÇëÊäÈëÕýÈ·µÄÕûÊý'

#1.ÊäÈëµÄ²»ÊÇÊý×Ö
#2.0²»ÄÜ×ö³ýÊý

ÊäÈë´íÎóµÄ½á¹û£º
ÕâÀïдͼƬÃèÊö
ÕâÀïдͼƬÃèÊö
ÊäÈëÕýÈ·µÄ½á¹û£º
ÕâÀïдͼƬÃèÊö
3.Òì³£-03

²¶»ñδ֪´íÎó£º
ÔÚ¿ª·¢µÄʱºò£¬ÒªÅжÏËùÓпÉÄܳöÏֵĴíÎó£¬ÊÇÓÐÒ»¶¨ÄѶȵÄ
Èç¹ûÏ£Íû³ÌÐòÎÞÂÛ³öÏÖÈκδíÎ󣬶¼²»»áÒòpython½âÊÍÆ÷Å׳öÒì³£¶øÖÕÖ¹
¿ÉÒÔÔÙÔö¼ÓÒ»¸öexcept

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try:
 num = int(raw_input('ÇëÊäÈëÒ»¸öÕûÊý£º'))
 result = 6 / num
 print result

#²¶»ñδ֪Òì³£
#result£ºÒ»¸ö±äÁ¿Ãû£¬¿ÉÒÔËæ±ãÆðÃû
except Exception as result:
 print 'δ֪´íÎó¶î %s' % result

ÊäÈë´íÎóµÄ½á¹û£º
ÕâÀïдͼƬÃèÊö
ÕâÀïдͼƬÃèÊö
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4.Òì³£-04

¸ñʽ£º
try:
 #³¢ÊÔÖ´ÐеĴúÂë
 pass
except ´íÎóÀàÐÍ1:
 pass
except ´íÎóÀàÐÍ2:
 pass
expect Exception as result

else:
 #ûÓÐÒì³£²Å»áÖ´ÐеĴúÂë
 pass
finally:
 #ÎÞÂÛÊÇ·ñÓÐÒì³££¬¶¼»áÖ´ÐеĴúÂë
 pass

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try:
 num = int(raw_input('ÇëÊäÈëÒ»¸öÕûÊý£º'))
 result = 6 / num
 print result

#²¶»ñδ֪Òì³£
#result£ºÒ»¸ö±äÁ¿Ãû£¬¿ÉÒÔËæ±ãÆðÃû
except Exception as result:
 print 'δ֪´íÎó¶î %s' % result
#Ö»ÓÐÔÚûÓÐÒì³£µÄʱºò£¬²Å»áÖ´ÐеĴúÂë
else:
 print '³¢ÊԳɹ¦£¡'
#ÎÞÂÛÊÇ·ñÓÐÒì³££¬¶¼»áÖ´ÐеĴúÂë
finally:
 print '================'

ÊäÈë´íÎóµÄ½á¹û£º
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ÕâÀïдͼƬÃèÊö
ÊäÈëÕýÈ·µÄ½á¹û£º
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5.Òì³£-05

Òì³£µÄ´«µÝ
Òì³£µÄ´«µÝ--µ±º¯Êý/·½·¨Ö´ÐгöÏÖÒì³££¬»á½«Òì³£´«µÝ¸øº¯Êý/·½·¨µ÷ÓõÄÒ»·½
Èç¹û´«µÝµ½Ö÷³ÌÐò£¬ÒÀ¾ÉûÓÐÒì³£´¦Àí£¬³ÌÐò²Å»áÖÕÖ¹£¬¿ÉÒÔÔÚÖ÷³ÌÐòÖÐÔö¼Ó
Òì³£²¶»ñ£¬¶øÔÚÖ÷º¯ÊýÖе÷ÓÃÆäËûº¯Êý£¬Ö»Òª³öÏÖÒì³££¬¶¼»á´«µÝµ½Ö÷º¯ÊýµÄÒì³£
²¶»ñÖУ¬Õâ¾Í²»ÐèÒªÔÚ´úÂëÖУ¬Ôö¼Ó´óÁ¿µÄÒì³£²¶»ñ£¬Äܹ»±£Ö¤´úÂëµÄÕû½à

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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

ÊäÈë´íÎóµÄ½á¹û£º
ÕâÀïдͼƬÃèÊö
ÊäÈëÕýÈ·µÄ½á¹û
ÕâÀïдͼƬÃèÊö
6.Òì³£-06
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ÐèÇó£º
ÅжÏÓû§ÊäÈëÃÜÂë
1.<8 ´íÎó¶î
2.>=8 ·µ»ØÊäÈëµÄÃÜÂë
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

ÊäÈëÕýÈ·µÄ½á¹û£º
ÕâÀïдͼƬÃèÊö
ÊäÈë´íÎóµÄ½á¹û£º
ÕâÀïдͼƬÃèÊö

¶þ.Ä£¿é

½¨Á¢test1,test2
test1:

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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# È«¾Ö±äÁ¿£¬º¯Êý£¬Àà Ö±½ÓÖ´ÐеĴúÂë²»ÊÇÏòÍâ½çÌṩµÄ¹¤¾ß
def say_hello():
 print 'helll hello'


# print 'have a nice day!'
# Èç¹ûÖ±½ÓÔÚÄ£¿éÖÐÊäÈ룬µÃµ½µÄʱ__main__
if __name__ == '__main__':
 print __name__
#Îļþ±»µ¼ÈëµÄʱºò£¬Äܹ»Ö±½Ó±»Ö´ÐеĴúÂë²»ÐèÒª±»Ö´ÐÐ
 print 'gf ¿ª·¢µÄ³ÌÐò'
 say_hello()

ʵÑé½á¹û£º
ÕâÀïдͼƬÃèÊö
2.Ä£¿é-02

#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

ʵÑé½á¹û£º
ÕâÀïдͼƬÃèÊö
3.Ä£¿é-03

#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

ÕâÀïдͼƬÃèÊö
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()

ÕâÀïдͼƬÃèÊö
5.Ä£¿é-05

pythonµÄ½âÊÍÆ÷ÔÚµ¼ÈëÄ£¿éµÄʱºò£¬»á£º
 1.ËÑË÷µ±Ç°Ä¿Â¼Ö¸¶¨µÄÄ£¿éÎļþ£¬Èç¹ûÓоÍÖ±½Óµ¼Èë
 2.Èç¹ûûÓУ¬ÔÚËÑË÷ϵͳĿ¼
×¢Ò⣺ÔÚ¿ª·¢Ê±£¬¸øÎļþÆðÃû£¬²»ÒªºÍϵͳģ¿éÎļþÖØÃû

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import random
rand = random.randint(0,10)
print rand

ÕâÀïдͼƬÃèÊö
6.Ä£¿é-06

¶ÏÑÔ£º¿ÉÒÔÀí½âΪÌáǰԤÑÔ£¬ÈÃÈ˸üºÃµÄÖªµÀ´íÎóÔ­Òò

ʵÑ飺

def func(num,p):
 assert (p != 0),'p²»ÄÜΪ0'
 return num / p
print func(10,2)

ÕâÀïдͼƬÃèÊö
7.Ä£¿é-07

ÔںܶàpythonÎļþÖлῴµ½ÒÔϸñʽµÄ´úÂë
 #µ¼ÈëÄ£¿é
 #¶¨ÒåÈ«²¿±äÁ¿
 #¶¨ÒåÀà
 #¶¨Ò庯Êý

 #ÔÚ´úÂëÏ·½

 def main():
  pass

 if __name__=='__mian__'
  mian()

ʵÑ飺

½¨Á¢Ò»¸ötest£º
def say_hello():
 print 'helll hello'
print __name__
#ÔÚµ¼ÈëµÄ.pyÎļþÖУ¬Êä³öÊÇ ÎļþÃû
import test

ÕâÀïдͼƬÃèÊö

Èý.Îļþ

½¨Á¢Á½¸öÃû½ÐREADMEºÍREADME_COPYµÄÎļþ
½¨Á¢·½·¨ µ¥»÷Êó±êÓÒ¼ü => New => File
1.Îļþ-01

²Ù×÷ÎļþµÄº¯Êý/·½·¨
ÔÚpythonÖÐÒª²Ù×÷ÎļþÐèÒª¼ÇסµÄ1¸öº¯ÊýºÍ3¸ö·½·¨
 #pythonÖÐÒ»ÇнԶÔÏó
 open £º´ò¿ªÎļþ£¬²¢ÇÒ·µ»ØÎļþ²Ù×÷¶ÔÏó
 read £º½«ÎļþÄÚÈݶÁÈ¡µ½ÄÚ´æ
 write £º½«Ö¸¶¨ÄÚÈÝдÈëÎļþ
 close £º¹Ø±ÕÎļþ
openº¯Êý¸ºÔð´ò¿ªÎļþ£¬²¢ÇÒ·µ»ØÎļþ¶ÔÏó
read/write/closeÈý¸ö·½·¨¶¼Í¨¹ýÎļþ¶ÔÏóÀ´µ÷ÓÃ

read·½·¨--¶ÁÈ¡Îļþ
openº¯ÊýµÄµÚÒ»¸ö²ÎÊýÊÇÒª´ò¿ªµÄÎļþÃû£¨ÎļþÃûÇø·Ö´óСд£©
 Èç¹ûÎļþ´æÔÚ£¬·µ»ØÎļþ²Ù×÷¶ÔÏó
 Èç¹ûÎļþ²»´æÔÚ£¬»áÅ׳öÒì³£
read·½·¨¿ÉÒÔÒ»´ÎÐÔ¶ÁÈë²¢·µ»ØÎļþµÄËùÓÐÄÚÈÝ
close·½·¨¸ºÔð¹Ø±ÕÎļþ

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#Èç¹ûÍü¼Ç¹Ø±ÕÎļþ£¬»áÔì³ÉϵͳËðºÄ£¬¶øÇÒ»áÓ°Ïìµ½ºóÐø¶ÔÎļþµÄÔËÐÐ
#1.´ò¿ªÎļþ
file = open('README')

#2.²Ù×÷Îļþ ¶Á/д
#read·½·¨£º¶ÁÈ¡ÎļþÄÚÈÝ£¨Ò»´ÎÐÔ·µ»ØÎļþµÄËùÓÐÄÚÈÝ£©
text = file.read()
print text

#3.¹Ø±ÕÎļþ
#close·½·¨£º¸ºÔð¹Ø±ÕÎļþ
file.close()

#ÔÚ¿ª·¢ÖУ¬Í¨³£»áÏȱàд´ò¿ªºÍ¹Ø±ÕµÄ´úÂë

ÎļþREADMEÖУº
ÕâÀïдͼƬÃèÊö
ʵÑé½á¹û£º
ÕâÀïдͼƬÃèÊö
2.Îļþ-02

ÎļþÖ¸Õ룺
 ÎļþÖ¸Õë±ê¼Ç´ÓÄĸöλÖÿªÊ¼¶ÁÈ¡Êý¾Ý
 µÚÒ»´Î´ò¿ªÎļþʱ£¬Í¨³£ÎļþÖ¸Õë»áÖ¸ÏòÎļþµÄ¿ªÊ¼Î»ÖÃ
 µ±Ö´ÐÐÁËread·½·¨ºó£¬ÎļþÖ¸Õë»áÒÆ¶¯µ½¶ÁÈ¡ÄÚÈݵÄĩβ
#Èç¹ûÍü¼Ç¹Ø±ÕÎļþ£¬»áÔì³ÉϵͳËðºÄ£¬¶øÇÒ»áÓ°Ïìµ½ºóÐø¶ÔÎļþµÄÔËÐÐ
#1.´ò¿ªÎļþ
file = open('README')

#2.²Ù×÷Îļþ ¶Á/д
#read·½·¨£º¶ÁÈ¡ÎļþÄÚÈÝ£¨Ò»´ÎÐÔ·µ»ØÎļþµÄËùÓÐÄÚÈÝ£©
text = file.read()
print text

#3.¹Ø±ÕÎļþ
#close·½·¨£º¸ºÔð¹Ø±ÕÎļþ
file.close()

#ÔÚ¿ª·¢ÖУ¬Í¨³£»áÏȱàд´ò¿ªºÍ¹Ø±ÕµÄ´úÂë

ÎļþÖÐREADME£º
ÕâÀïдͼƬÃèÊö
ʵÑé½á¹û£º
ÕâÀïдͼƬÃèÊö
3.Îļþ-03

#1.´ò¿ªÎļþ
file = open('README')

#2.²Ù×÷Îļþ ¶Á/д
#read·½·¨£º¶ÁÈ¡ÎļþÄÚÈÝ£¨Ò»´ÎÐÔ·µ»ØÎļþµÄËùÓÐÄÚÈÝ£©
text = file.read()
print text

#´òÓ¡ÊäÈëÄÚÈݵij¤¶È
print type(text)
print len(text)


print '*' * 50
text = file.read()
print text
print len(text)
#3.¹Ø±ÕÎļþ
#close·½·¨£º¸ºÔð¹Ø±ÕÎļþ
file.close()

#ÔÚ¿ª·¢ÖУ¬Í¨³£»áÏȱàд´ò¿ªºÍ¹Ø±ÕµÄ´úÂë

ÎļþÖÐREADMEÖУº
ÕâÀïдͼƬÃèÊö
ʵÑé½á¹û£º
ÕâÀïдͼƬÃèÊö
4.Îļþ-04

´ò¿ªÎļþµÄ·½Ê½£º
 name = open('ÎļþÃû','·ÃÎÊ·½Ê½')

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#ÒÔдµÄ·½Ê½´ò¿ªÎļþ£¬Èç¹ûÎļþ´æÔڻᱻ¸²¸Ç£¬Èç¹ûÎļþ²»´æÔÚ£¬´´½¨ÐÂÎļþ
#1.´ò¿ªÎļþ
file = open('README','w')
#2.дÈëÎļþ
file.write('¡«¡«¡«¡«¡«')
#3.¹Ø±ÕÎļþ
file.close()

Ô­ÎļþREADMEÖУº
ÕâÀïдͼƬÃèÊö
ʵÑé½á¹û£º
ÕâÀïдͼƬÃèÊö
5.Îļþ-05

# 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()

Ô­ÎļþREADMEÖУº
ÕâÀïдͼƬÃèÊö
ʵÑé½á¹û£º
ÕâÀïдͼƬÃèÊö
6.Îļþ-06

°´ÐжÁÈ¡Îļþ£º
  read·½·¨Ä¬ÈÏ»á°ÑÎļþµÄËùÓÐÄÚÈÝÒ»´ÎÐÔ¶Áµ½ÄÚ´æ
  Èç¹ûÎļþÌ«´ó£¬¶ÔÄÚ´æµÄÕ¼Óûá·Ç³£ÑÏÖØ
readline·½·¨£º
  readline·½·¨¿ÉÒÔÒ»´ÎÐÔ¶ÁȡһÐÐÄÚÈÝ
  ·½·¨Ö´Ðкó,»á°ÑÎļþÖ¸ÕëÒÆ¶¯µ½ÏÂÒ»ÐУ¬×¼±¸ÔٴζÁÈ¡

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# ¶ÁÈ¡´óÎļþµÄÕýÈ·×ËÊÆ

file = open('README')
# ΪʲôҪд³ÉËÀÑ­»·£ºÒòΪÎÒÃDz»ÖªµÀÒª¶ÁÈ¡µÄÎļþÓжàÉÙÐÐ
while True:
 text = file.readline()
 # Èç¹ûÎļþÖ¸¶¨µ½ÎļþµÄ×îºóÒ»ÐУ¬ÄÇô¾Í¶Á²»µ½ÄÚÈÝ
 if not text:
  break
 # ÿ¶ÁȡһÐУ¬Ä©Î²¶¼ÒѾ­ÓÐÒ»¸ö\n
 print text
file.close()

ÎļþREADMEÖУº
ÕâÀïдͼƬÃèÊö
ÔËÐнá¹û£º
ÕâÀïдͼƬÃèÊö
7.Îļþ-07
ʵÑ飺

#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()

ÎļþREADME
ÕâÀïдͼƬÃèÊö
ÎļþºÍREADME_COPY
ÕâÀïдͼƬÃèÊö
ʵÑé½á¹û£º
README_COPYÎļþÖУº
ÕâÀïдͼƬÃèÊö
8.Îļþ-08

¶ÁÈ¡´óÎļþ

ʵÑ飺

# 1.´ò¿ªÎļþ
file_read = open('README')
file_write = open('README_COPY', 'w')
#¶Áд
while True:
 text = file_read.readline()
 if not text:
  break
 file_write.write(text)
#¹Ø±Õ
file_read.close()
file_write.close()

ÎļþREADMEÖÐ
ÕâÀïдͼƬÃèÊö
ÎļþREADME_COPYÖÐ
ÕâÀïдͼƬÃèÊö
ʵÑé½á¹û£º
ÎļþREADME_COPY
ÕâÀïдͼƬÃèÊö

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with open('pi_digits') as file_object:
 contents = file_object.read()
 print contents

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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 = 'pi_digits'
with open(filename) as file_object:
 lines = file_object.readline()
for line in lines:
 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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number = [1,2,3,4]

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 # ÎÒÃÇʹÓú¯Êýjson.dump()½«Êý×ÖÁÐ±í´¢´æµ½ÎļþÖÐ
 json.dump(number,f_obj)

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filename = 'number.json'
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 #²¢½«Æä´¢´æµ½±äÁ¿numberÖÐ
 number = json.load(f_obj)
print number

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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
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else:
 print "Welcome back %s " % username

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