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Quelques petits exercices en Python
- PHP中文网original
- 2017-06-21 15:22:321249parcourir
Devoir 1 : , vous pouvez revenir en arrière et sortir !
Devoir 2
<span style="color: #808080; font-style: italic">#conding:utf8<span style="color: #000080; font-weight: bold"><br><br><br>menu = {<span style="color: #008080; font-weight: bold">'北京':{<span style="color: #008080; font-weight: bold">'昌平':{<span style="color: #008080; font-weight: bold">'沙河':{<span style="color: #008080; font-weight: bold">'昌平妇幼',}},<span style="color: #008080; font-weight: bold">'海淀':{<span style="color: #008080; font-weight: bold">'海淀一区':{<span style="color: #008080; font-weight: bold">'海淀二区'},}},} <span style="color: #808080; font-style: italic">#字典嵌套<br><span style="color: #808080; font-style: italic"><br>current_layer = menu <span style="color: #808080; font-style: italic">#利用此变量来记录当前的层的位置<br>pre_menu = [] <span style="color: #808080; font-style: italic">#用【】来记录每一层<br><span style="color: #808080; font-style: italic"><br><span style="color: #000080; font-weight: bold">while True:<br><span style="color: #000080; font-weight: bold">for k <span style="color: #000080; font-weight: bold">in current_layer:<br><span style="color: #000080">print (k)<br> choice = <span style="color: #000080">input(<span style="color: #008080; font-weight: bold">'>>>>>>>:').strip() <span style="color: #808080; font-style: italic">#去除输入选项连边的空格<br><span style="color: #808080; font-style: italic"> <span style="color: #000080; font-weight: bold">if <span style="color: #000080">len(choice) == <span style="color: #0000ff">0: <span style="color: #808080; font-style: italic">#通过len的长度来判断用户是否输入了<br><span style="color: #808080; font-style: italic"> <span style="color: #000080; font-weight: bold">continue<br><span style="color: #000080; font-weight: bold"><br><span style="color: #000080; font-weight: bold"> if choice <span style="color: #000080; font-weight: bold">in current_layer:<br> pre_menu.append(current_layer)<br> current_layer = current_layer[choice]<br><span style="color: #000080; font-weight: bold">elif choice == <span style="color: #008080; font-weight: bold">'b':<br><span style="color: #000080; font-weight: bold">if <span style="color: #000080">len(pre_menu) > <span style="color: #0000ff">0: <span style="color: #808080; font-style: italic">#通过大于0 来判断，还有目录可退<br><span style="color: #808080; font-style: italic"> current_layer = pre_menu.pop() <span style="color: #808080; font-style: italic">#利用pop来弹出上面的一层。<br><span style="color: #808080; font-style: italic"> <span style="color: #000080; font-weight: bold">elif choice == <span style="color: #008080; font-weight: bold">'q':<br><span style="color: #000080">exit()</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> |
Petit exercice pour liste : Implémentation de la fonction panier
Devoir 3
product_list = [[ |
Petite pratique de l'algorithme à bulles
Devoir 4
a_list = [ |
Petit exercice d'algorithme d'insertion
Méthode de mise en œuvre une :
Méthode de mise en œuvre deux
:a_list = [ |
做业五 打印99乘法表 课堂中提到的方法： for i in range(1,10):<br> output = ''<br> for j in range(1,i+1):<br> output+= "%s*%s=%2s "%(i,j,i*j)<br> print output --------------------------------------------------- 作业六： 取一个列表中前两位大的数字 利用单循环来同事去除两个两个数。 作业七 二分查找法（利用递归函数） 作业八 利用函数完成用户的注册登录功能 #!/usr/bin/python<br>#encoding: utf-8 import getpass user_list = {} def new_user():<br> username = raw_input('please input your new name:')<br> if username in user_list:<br> print '%s is already exits!!' %username<br> else:<br> passwd = getpass.getpass() #已密码不显示的方式输入。<br> user_list[username] = passwd def old_user():<br> username = raw_input('please input your name:')<br> passwd = raw_input('please input your passwd:')<br> if username in user_list:<br> if user_list[username] == passwd:<br> print 'login successfull!!'<br> else:<br> print 'login fail!!'<br> else:<br> print 'login fail!!!' CMD = {'n' : new_user , 'o' : old_user} def main_menu():<br> ppp = '''<br> 新用户注册：n<br> 老用户登录：o<br> 推出：q '''<br> while True:<br> try:<br> choice = raw_input(ppp)<br> except (KeyboardInterrupt, EOFError): #捕捉ctrl+ D 的错误输出。<br> choice = 'q' if choice not in 'noq':<br> print 'please input again'<br> continue<br> if choice == 'q':<br> break<br> CMD[choice]() #通过取字典的key，选择来执行函数 if __name__ == '__main__':<br> main_menu() log日志前十排序，其中包括重复的。利用函数简单的html输出 生成随机验证码：
<br>
#!/usr/bin/python<br><br>NumList = [1,2,3,2,12,3,1,3,21,2,2,3,4111,22,3333,444,111,4,5,777,4222,46,33,45,65555]<br><br>max_num = 0<br>sec_num = 0<br><br>for n in NumList:<br>if max_num < n:
sec_num=max_num
#获取最大数之前的比较的哪个数肯定是在这之前第二大的
max_num = n
#但是后面如果再出现比最大的大，比之前比较出料的第二大
#小的数时需要再比较下。
if n < max_num and n > sec_num:<br> sec_num = n<br><br><br>print ('The bigest NUM is : %s' %(max_num))<br>print ('The second one is : %s' %(sec_num)) <br>
num_list = [
作业九 #!/usr/bin/python
#coding:utf8
def openFile(log):
with open(log) as f:
content = f.readlines()
return content
def countLine(fn):
content = fn
count_dict = {}
for line in content:
line = line.split(' ') # string 通过split 转换为list
local_ip,uri,code = line[0],line[6],line[8]
#利用元组来作为key，然后统计数量
count_dict[(local_ip,uri,code)] = count_dict.get((local_ip,uri,code),0) + 1
#这个排序的功能网上copy的，不了解原理
count_dict = sorted(count_dict.items() ,key=lambda item:item[1],reverse=True)
return count_dict
def detailLine(fn):
count_dict = fn
#下面进行重复行计数为一行。
n = 1 #取行计数
num = 0 #用于判断'统计数量'是否出现一样的
# print ('-----IP------------------URI----------CODE---count---')
# for i in count_dict:
# if n <= 10: # 取前十
# if i[1] != num:
# print('%-10s%20s%5s%10s ---->no%s' % (i[0][0], i[0][1], i[0][2], i[1], n))
# num = i[1]
# n += 1
# elif i[1] == num:
# print('%-10s%20s%5s%10s' % (i[0][0], i[0][1], i[0][2], i[1]))
with open('count.html','w') as f:
res = "<table border='1'>"
res += '<tr><td>IP</td><td>URI</td><td>CODE</td><td>COUNT</td></tr>'
for i in count_dict:
if n <= 10:
if i[1] != num:
res += '<tr><td>%s</td><td>%s</td><td>%s</td><td>%s</td></tr>'% (i[0][0],
i[0][1], i[0][2], i[1])
num = i[1]
n += 1
elif i[1] == num:
res += '<tr><td>%s</td><td>%s</td><td>%s</td><td>%s</td></tr>' % (i[0][0],
i[0][1], i[0][2], i[1])
res +='</table>'
f.write(res)
def main():
first = openFile('access.log')
second = countLine(first)
detailLine(second)
if __name__ == '__main__':
main()
作业十， 方法一：
import string,random
source = string.digits + string.ascio_lowercase
print ("".join(random.sample(source,6)))
方法二：
checkcode = ''
for i in range(6):
current = random.randrange(0,6)
if current != i:
temp = chr(random.randint(65,90))
else:
temp = random.randint(0-9)
checkcode += str(temp)
print(checkcode)
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