第一周2016/9/11

 

Python 2.0和3.0的区别

3.0 的模块名改了和之前的2.0 不一样

#!/usr/bin/env python

# -*- coding:utf-8 -*-         加 utf8

>>> user="123"             2.0打印

>>> print user

123

Print(user)               3.0打印

变量

Name=”hanwei”   #姓名

name=”hanwei”    #姓名

注释 #  ‘’’  ‘’’

2.0

>>> a=raw_input("your name:")

your name:123

>>> print a

123

3.0

>>> a=input("your name:")

your name:123

>>> print a

123

格式化字符串

#!/usr/bin/env python

name=input("your name:")

age=int(input("your age:"))      %d代表小数必须像这样

job=input("your job:")

%s 小数或字符串    %f 浮点数   %d 小数

msg='''

Name:%s

Age:%d

Job:%s

'''%(name,age,job)

print(msg)

ASCI码叫阿克斯码

Ascl 本身没有加入utf8 加入utf8才有中文

8个bi等于一个字节

1024个字节等于1kb

#####################

Ascl 查询 规律

Ab-----69----------ascl码

输入密码不显示密码

import getpass

username = input("username:")

password = getpass.getpass()

print(username,password)

判断次数输入密码

user = "hanwei"
passwd = "789"

username = input("username")
password = input("password")

if user == username:
    print("username is corerct....")
    if password == passwd:
        print("Wlecome login....")
    else:
        print("password is invalid...
else:
    print("no no no")

判断输入密码器

user = "hanwei"
passwd = "789"
username = input("username:")
password = input("password:")

if username == user and password == passwd:
    print("Welcome login")
else:
    print("mima huo yonghu mong cuowu")

猜数字

#!/usr/bin/env python
# -*- coding:utf-8 -*-

age = 22
guess_num = int(input("input your guess num:"))  init 转为数字
if guess_num == age:
    print("you git lt")
elif guess_num > age:
    print("da le")
else:
    print("xiaole")

猜数字2

age = 22

for i in range(10):

if i <3:

guess_num = int(input("input your guess num:"))

if guess_num == age:

print("you git lt")

break

elif guess_num > age:

print("da le")

else:

print("xiaole")

else:

print("cishi taiduo")

break

列表---其他叫做数组

定义数组

name=["zhangsan","lisi","wangwu","liu","xie","zhou"]

打印

name[1:3][1][3]

name[1:3]

name[-2:]

name[-1]

name[4]

name[:2]

修改

name[4] = "xietingfeng"

插入

name.insert(4,'hanwei')

删除

name.remove("liu")

打印所有

>>> name

['zhangsan', 'lisi', 'wangwu', 'hanwei', 'xietingfeng', 'zhou', 'alix']

if 9 in name:
    num = name.count(9)  统计9的个数
    pos = name.index(9)  找出索引
    name[pos] = 999      改
  
    print(name)

循环改改所有
name = ["zhangsan","lisi","wangwu","sunliu","liu0",1,1,3,5,4,8,98,9,10,11,9,9,9]
for i in range(name.count(9)): 
    ele = name.index(9)
    name[ele] = 9999999999
    print name

扩展

name = ["zhangsan","lisi","wangwu","sunliu","liu0"]
name2 = ["hanweiu","lini"]

name.extend(name2)
print(name)

打印嵌套

name = ["zhangsan","lisi",["li","a"],"wangwu","sunliu","liu0"]

print name [2][0]

反向排序

name = ["zhangsan","lisi",["li","a"],"wangwu","sunliu","liu0"]
name.reverse()
print name

排序

name = ["zhangsan","lisi",["li","a"],"wangwu","sunliu","liu0"]
name.sort()
print name

考被列表

name = ["zhangsan","lisi",["li","a"],"wangwu","sunliu","liu0"]
name2 = name.copy()
print(name2)

删除

name = ["zhangsan","lisi",["li","a"],"wangwu","sunliu","liu0"]
name.pop(2)
print name

不长 (比如 1.3.5排序)

name = ["zhangsan","lisi",["li","a"],"wangwu","sunliu","liu0"]

print (name[::2])

删除

name = ["zhangsan","lisi",["li","a"],"wangwu","sunliu","liu0"]
del name[1]
print (name[::2])

完全拷贝

name = ["zhangsan","lisi","wangwu","sunliu","liu0"]

name4 = copy.deepcopy(name)
print(name4)

猜数字2

age = 22
count = 0
for i in range(10):
    if count<3:
        print(count)
        guess_num = int(input("input your guess num:"))
        if guess_num == age:
            print("you git lt")
            break
        elif guess_num > age:
            print("da le")
        else:
            print("xia ole")
    else:
        con = input("hai yao ji xu ma:")
        if con == 'y':
            count = 0
            continue
        else:

            print("exit")
            break
    count += 1

字符串处理

name = "alex,jack,rain"

name2 = name.split(",")  转换成列表

print(name2)   

print("|".join(name2)) 换成 |

删掉多余前后空格

username=input("user:")

if username.strip() == 'alex':
    print("welcome")'''

 

name = "alex li"

 

print(name[2:4])              打印指定字符


print(name.center(40,'-'))    打印40不满40 前后加—

print(name.find("li"))        查找

print('' in name)             查找空格

print(name.capitalize())     第一个字母换成大写

 

变量

msg="Hello, {name}, it's been along {age} since last tiem...."
msg2=msg.format(name='mimng hu',age='33')
print(msg2)

变量
msg2="hahah {0}, dddd {1}"
print(msg2.format('alex','aa'))

避免输入的不是数字报错

age = input("your age:")

'''if age. isdigit():      避免  
    age = int(age) 
else:
    print("nono")'''

 

name='alex3sdf'
print(name.isalnum())       判断是否是字母或者数字
print(name.endswith('f'))   判断结尾是否是f
print(name.startswith('a')) 判断开头是否是a
print(name.upper().lower())  大小写转换

While 死循环

count=0
while True:

    count+=1
    if count>50 and count<60:   50-60之间退出循环
        continue
    print("你是风儿我是沙")
    print(count)

    if count == 100:
        print("穿上裤子走天涯")
        print(count)
        break

字典

id_db = {
     412728199004125331:{
         'name':"hanwei",
         'age': 18,
         'addr':'henan'
     },
     41272819900512331: {
         'name':"shanpao",
         'age':24,
         'addr':'shandong'
     },
}

#print(id_db[412728199004125331])  打印k值

#id_db[41272819900512331]['name']="minghu" 修改

#del id_db[41272819900512331]          删除


#id_db[41272819900512331].pop("addr")  删除

#v=id_db.get(41272819900512331)  判断是否存在

#v=id_db[41272819900512331]     负值k值

 

 


#print(id_db)
dic2={
    'name':'hanhanhan',
    222012000:{'name':'wang'},
}
#print(dic2)

#id_db.update(dic2)   更新如果只存在覆盖不存在追加
#print(id_db)

#print(id_db) # 打印字典

#print(id_db.items()) 转换成元祖
#print(id_db.values())  打印values

#print(id_db.keys())  打印keys

#41272819900512331 in id_db   判断一个值是否存在

#print(id_db.setdefault(41272819900412533,"hhh"))   判断一个不存在就追加

 


循环字典
for key in id_db:
    print(key,id_db[key])

 

购物车

  1. salary=input("input your salery:")
  2.  
  3. if salary.isdigit():
  4. salary=int(salary)
  5. else:
  6. exit("shu ru cuo wu")
  7.  
  8. welcom_msg=,'-')
  9. print(welcom_msg)
  10.  
  11. exit_flag = False
  12. product_list=[
  13. (),
  14. (),
  15. (),
  16. ('xiaomi 2',19.9),
  17. (),
  18. (),
  19. (),
  20. (),
  21. ]
  22.  
  23. shop_car=[]
  24. while exit_flag is not True:
  25. print(,'-'))
  26. for item in enumerate(product_list):
  27. index=item[]
  28. p_name=item[][]
  29. p_price=item[][]
  30. print(index,'.',p_name,p_price)
  31.  
  32. user_choice = input("[q=quit,c=check],what do your want to buy:")
  33. if user_choice.isdigit():
  34. user_choice=int(user_choice)
  35. if user_choice <len(product_list):
  36. p_item=product_list[user_choice]
  37. ] <=salary:
  38. shop_car.append(p_item)
  39. salary -= p_item[]
  40. print("added[%s]into shop car,you current balance is \033[31:1m[%s]"
  41. %( p_item,salary))
  42. else:
  43. print("your balance is [%s], nono.." % salary)
  44. else:
  45. if user_choice == 'q' or user_choice == 'quit':
  46. print(,'*'))
  47. for item in shop_car:
  48. print(item)
  49. print(,'*'))
  50. print("nide yu ge shi [%s]" % salary)
  51. print("Bye")
  52. exit_flag = True
  53. elif user_choice == 'c' or user_choice == 'check':
  54. print(, '*'))
  55. for item in shop_car:
  56. print(item)
  57. print(, '*'))
  58. print("nide yu ge shi [%s]" % salary)
  59. print("Bye")

Set


s1={11,22,33}
s2={22,33,44}
#s3=s1.difference(s2)   a中存在b中不存在
#s3=s1.symmetric_difference(s2) a中不存在和b中不存在

#s1.difference_update(s2)    a中存在b中不存在跟新到a中

#s3=s1.intersection(s2)  找出a和b相同的   叫做交集

#s1.symmetric_difference_update(s2)   a和b中不存在德跟新到a中

#s1.discard(11)  删除不存在不报错

#s1.remove(22) 删除不存在报错

#s1.pop()      随机删除

#s1.intersection_update(s2)  把a和b相同的更新到a中

#s3=s1.union(s2)  并集

#{33, 22, 11, 44}

添加
#s1.add(99)

#li=[88,66,99]
#s1.update(li)


练习题


old_dict={
    "#1":8,
    "#2":4,
    "#4":2,
}

new_dict={
    "#1":4,
    "#2":4,
    "#3":2,
}

拿到keys
new_set=set(new_dict.keys())
old_set=set(old_dict.keys())

remove_set=old_set.difference(new_set)   需要删除的
add_set=new_set.difference(old_set)      需要添加的
update_set=old_set.intersection(new_set) 需要更新的

  1. #!/usr/bin/env python
  2.  
  3. http://www.cnblogs.com/spykids/p/5163108.html
  4. shopping_list = [
  5. [],
  6. [],
  7. [],
  8. [],
  9. [],
  10. [],]
  11.  
  12. salary =
  13.  
  14. total =
  15.  
  16. shop_list = []
  17.  
  18. while True:
  19. welcom_1 = "XXX购物商城欢迎你"
  20. we_1 = welcom_1.center(,'*')
  21. print(we_1)
  22.  
  23. choice_1 = "1.注册 2.登录 q。退出"
  24. ch_1 = choice_1.center(,'*')
  25.  
  26. exit_1 = "谢谢使用,欢迎下次光临"
  27. ex_1 = exit_1.center(,'*')
  28.  
  29. error_1 = "你输入的用户已存在,请重新输入"
  30. e_1 = error_1.center(,'*')
  31.  
  32. error_2 = "密码不能为空,请重新输入"
  33. e_2 = error_2.center(,'*')
  34.  
  35. error_3 = "输入的密码太短,请重新输入"
  36. e_3 = error_3.center(,"*")
  37.  
  38. error_4 = "你输入有误,请重新输入"
  39. e_4 = error_4.center(,'*')
  40.  
  41. error_5 = "你的账号已锁定,请联系管理员"
  42. e_5 = error_5.center(,'*')
  43.  
  44. print(ch_1)
  45. sr_1 = input("Please input:")
  46. ':
  47. while True:
  48. with open('ming.txt','r')as r_1:
  49. temp = r_1.readlines()
  50. tlist = []
  51.  
  52. for tline in temp:
  53. tline = tline.strip().split(':')
  54. tlist.append(tline[])
  55. useradd = input("Please create user:")
  56. s_1 = '成功创建用户:%s' %(useradd)
  57.  
  58. if useradd in tlist:
  59. print(e_1)
  60. elif useradd == 'exit':
  61. break
  62. else:
  63. passwd = input('Please create a password:')
  64. lenth = len(passwd)
  65. :
  66. print(e_2)
  67. elif lenth > :
  68. with open('ming.txt','a')as r_3:
  69. w_1 = '%s:%s:0\n ' %(useradd,passwd)
  70. r_3.write(w_1)
  71. s_1 = s_1.center(,'*')
  72. print(s_1)
  73. break
  74. else:
  75. print(e_3)
  76.  
  77. elif sr_1 == ':
  78. flag = False
  79. while True:
  80. username = input("Please enter a user name:")
  81. l = open('lock.txt','r')
  82. for lline in l.readlines():
  83. lline = lline.strip()
  84. if username == lline:
  85. print("账号已经锁定")
  86. flag = True
  87. l.close()
  88. break
  89. if flag == True:
  90. break
  91.  
  92. u = open('ming.txt','r')
  93. for uline in u.readlines():
  94. user,password,mony = uline.strip().split(':')
  95. if username == user:
  96. i =
  97. :
  98. passwd = input('Please enter a password:')
  99. i +=
  100. if passwd == password:
  101. print('你好欢迎登陆购物平台')
  102. flag = True
  103. u.close()
  104. break
  105. else:
  106. :
  107. with open('lock.txt','a') as l_2:
  108. l_2.write(username + '\n')
  109. l_2.close()
  110. exit("错误过多,账号已锁定,请联系管理员")
  111. print( - i))
  112. break
  113. else:
  114. print("用户输入错误,请重新输入")
  115. break
  116. while True:
  117.  
  118. print("1.购物 2.查看购物车 3.查看余额 4.充值 b.返回 q.退出")
  119. print("--------------------------------------------------")
  120. choice_2 = input('请选择')
  121. flag_1 = False
  122. while True:
  123. ":
  124. while True:
  125. for index,g in enumerate(shopping_list):
  126. print(index,g[],g[])
  127. print('--------------')
  128. print('c.查看购物车 b.返回 q.退出')
  129. choice = input('请选择商品:').strip()
  130. if choice.isdigit():
  131. choice = int(choice)
  132. p_price = shopping_list[choice][]
  133. if p_price < salary:
  134. shop_list.append(shopping_list[choice])
  135. total += p_price
  136. salary -= p_price
  137. print('------------------')
  138. print(],salary))
  139. print('------------------')
  140. else:
  141. print('--------------------')
  142. print('余额不足,请充值')
  143. print('--------------------')
  144. elif choice == "c":
  145. while True:
  146. print('-------你已进入购物车-------')
  147. for k,v in enumerate(shop_list):
  148. print(k,v[],v[])
  149. print("已消费金额为:%s"%total)
  150. print("你的余额为:%s"%salary)
  151. print('--------------------------')
  152. print("d.删除商品,b.返回 q.退出")
  153. print('--------------------------')
  154. choce_1 = input('请选择')
  155. print('--------------------------')
  156. if choce_1 == 'd':
  157. print('-------------------------')
  158. print('选择要删除的商品 b.返回购物车:')
  159. print('-------------------------')
  160. while True:
  161. choice_2 = input('请选择:')
  162. if choice_2.isdigit():
  163. choice_2 = int(choice_2)
  164. d_price = shop_list[choice_2][]
  165. shop_list.remove(shop_list[choice_2])
  166. total -= d_price
  167. salary += d_price
  168. print('----------------')
  169. print(],salary))
  170. print('-----------------')
  171. elif choice_2 == 'b':
  172. break
  173. elif choice_1 == 'b':
  174. flag = True
  175. break
  176. else:
  177. print('-----购物清单------')
  178. for k,v in enumerate(shop_list):
  179. print(k,v[],v[])
  180. print('总消费金额为:%s'%total)
  181. print('你的可用余额:%s'%salary)
  182. print('-----欢迎下次再来-----')
  183. exit()
  184. elif choice == "b":
  185. break
  186. elif choice == 'q':
  187. print('------购物清单------')
  188. for k,v in enumerate(shop_list):
  189. print(k,v[],v[])
  190. print('消费金额为:%s'%total)
  191. print('你的可用余额为:%s'%salary)
  192. print('------欢迎再次光临------')
  193. exit()
  194. else:
  195. print('----------------')
  196. print('你输入错误,请重新输入!')
  197. print('-------------------')
  198. if flag == True:
  199. break
  200. elif choice_2 == ':
  201. print('-----购物车-------')
  202. for k,v in enumerate(shop_list):
  203. print(k,v[],v[])
  204. print('已消费金额为:%s'%total)
  205. print('你的余额为:%s'%salary)
  206. print('--------------------')
  207. break
  208. elif choice_2 == ':
  209. with open('ming.txt','r')as m_1:
  210. mony_1 = m_1.readlines()
  211. for mline in mony_1:
  212. (user,password,mony) = mline.strip().split(':')
  213. print(salary)
  214. flag_1 = True
  215. break
  216. break
  217. elif choice_2 == ':
  218. z =
  219. :
  220. chongzhi = int(input('输入金额:'))
  221. passwd_1 = input('输入密码:')
  222. m = open('ming.txt','r+')
  223. m_2 = m.readlines()
  224. for mline in m_2:
  225. (user,password,mony) = mline.strip().split(':')
  226. if passwd_1 == password:
  227. mony_2 = (chongzhi + int(mony))
  228. w_2 = '%s:%s:%s'%(username,password,mony_2)
  229. m.write(w_2)
  230. print('充值成功')
  231. print(mony)
  232. flag = True
  233. break
  234. continue
  235. break
  236. if flag == True:
  237. break
  238. elif choice_2 == 'b':
  239. flag = True
  240. break
  241. elif choice_2 == 'q':
  242. exit(ex_1)
  243. else:
  244. print(e_4)
  245. break
  246. break
  247. if flag == True:
  248. break
  249. break
  250. elif sr_1 == 'q':
  251. exit(ex_1)
  252. else:
  253. print(e_4)
  254. print('--------------------------------')

三级菜单

http://www.2cto.com/kf/201512/453371.html

  1. import re
  2. memu = {
  3. '东北':{
  4. '吉林省':{
  5. '吉林市':['吉林市1','吉林市2'],
  6. '长春':['长春1','长春2'],
  7. },
  8. '辽宁省':{
  9. '沈阳':['沈阳1','沈阳2'],
  10. '大连':['大连1','大连2'],
  11.  
  12. },
  13. },
  14. '华北':{
  15. '河北':{
  16. '廊坊':['廊坊1','廊坊2'],
  17. '保定':['保定1','保定2'],
  18. },
  19. '内蒙古':{
  20. '呼和浩特':['呼和浩特1','呼和浩特2'],
  21. '包头':['包头1','包头2']
  22. },
  23. },
  24. }
  25.  
  26. flag = True
  27. while flag:
  28. for i,v in enumerate(memu.keys()):
  29. print(i,v)
  30. num_1 = input('请输入一级菜单号 q.退出:')
  31. if num_1 == 'q':
  32. flag = True
  33. break
  34. if num_1.isdigit():
  35. num_1 = int(num_1)
  36. if num_1 <= len(memu):
  37. key_1 = list(memu.keys())[num_1]
  38. while flag:
  39. for i1,v1 in enumerate(memu[key_1]):
  40. print(i1,v1)
  41. num_2 = input('请输入二级菜单号 q.退出 b.返回:')
  42. if num_2 == 'q':
  43. flag = False
  44. break
  45. if num_2 == 'b':
  46. break
  47. if num_2.isdigit():
  48. num_2 = int(num_2)
  49. if num_2 <= len(memu[key_1]):
  50. key_2 = list(memu[key_1].keys())[num_2]
  51. while flag:
  52. for i2,v2 in enumerate(memu[key_1][key_2]):
  53. print(i2,v2)
  54. num_3 = input('请输入三级菜单号 q.退出 b.返回:')
  55. if num_3 == 'q':
  56. flas = False
  57. break
  58. if num_3 == 'b':
  59. break
  60. if num_3.isdigit():
  61. num_3 = int(num_3)
  62. if num_3 <= len(memu[key_1][key_2]):
  63. key_3 = list(memu[key_1][key_2].keys())[num_3]
  64. while flag:
  65. print('最后一页!')
  66. for i3,v3 in enumerate(memu[key_1][key_2][key_3]):
  67. print(i3,v3)
  68. num_4 = input('q.退出 b.返回:')
  69. if num_4 == 'q':
  70. flag = False
  71. break
  72. if num_4 == 'b':
  73. break

  1. 购物车
    http://www.cnblogs.com/spykids/p/5163108.html 

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