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RSS订阅原创 搭建MySQL主从
搭建主从#将主服务器的数据备份到从服务器上**#好处：**1.读写分离，2.数据备份，3.负载均衡#配置主从同步的基本步骤：1.在主服务器上，必须开启二进制日志机制和配置一个独立的ip2.在每一个从服务器上，配置一个唯一的id，创建一个用来专门复制主服务器数据的账号3.在开始复制进程之前，在主服务器上记录二进制文件的位置信息4.如果在开始复制之前，数据库中已有数据，就必须创建一个数据...
2018-11-18 11:13:26
2939
原创 有道翻译——爬取
输入英文从有道翻译网址爬取js数据#coding=utf-8import urllibimport urllib2fanyi_url = 'http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule'head = { 'Accept': 'application/json, text/java...
2018-09-19 10:56:08
414
原创 用户输入关键字，爬取百度贴吧
爬取百度贴吧#coding=utf-8import urllib2import urllibdef loadPage(url, filename): ''' 作用:根据url发送请求， 获取服务器响应文件 url:需要爬取的url地址 filename:处理文件名 ''' head = {'User-Agent': ...
2018-09-18 16:21:42
388
原创 binary search in Python
binary searchdef binary_search(list_02, item): n = len(list_02) if n >= 1: mid = n // 2 if list_02[mid] == item: return True elif item < list_02[mid...
2018-08-27 16:59:50
583
原创 merge sort in Python
merge sortdef merge_sort(list_02): n = len(list_02) if n <= 1: return list_02 mid = n // 2 left_li = merge_sort(list_02[:mid]) right_li = merge_sort(list_02[mid:]) ...
2018-08-27 16:19:55
668
原创 quick sort in Python
quick sortdef quick_sort(list_02, first, last): if first >= last: return mid_val = list_02[first] low = first high = last while low < high: while low <...
2018-08-27 15:06:12
446
原创 shell sort in Python
shell sortdef shell_sort(list_02): gap = len(list_02) // 2 while gap > 0: for i in range(gap, len(list_02)): while i > 0: if list_02[i] < list_...
2018-08-26 16:57:07
229
原创 insert sort in Python
insert sortdef insert_sort(list_02): for j in range(1, len(list_02)): for i in range(j, 0, -1): if list_02[i] < list_02[i - 1]: list_02[i], list_02[i - 1...
2018-08-26 16:55:43
355
原创 Selection sort in Python
Selection sortdef selection_sort(list_02): for j in range(len(list_02) - 1): min_index = j for i in range(j + 1, len(list_02)): if list_02[min_index] > list_02[i...
2018-08-25 14:11:41
415
原创 Bubble sort in Pyton
Bubble sortdef bubble_sort(list_02): for j in range(len(list_02) - 1, 0, -1): count = 0 for i in range(0, j): if list_02[i] > list_02[i + 1]: lis...
2018-08-25 13:31:31
184
原创 Queue in Python
Queueclass Queue(): '''Queue''' def __init__(self): self.__list = [] def enqueue(self, item): '''Add an element to the queue''' self.__list.append(item) d...
2018-08-25 10:58:49
322
原创 Deque in Python
Dequeclass Queue(): '''Queue''' def __init__(self): self.__list = [] def enqueue(self, item): '''Add an element to the queue''' self.__list.append(item) d...
2018-08-25 10:56:23
254
原创 Stack in Python
Stackclass Stack(): '''stack''' def __init__(self): self.__list = [] def push(self, item): '''add a new element to the top of the stack''' self.__list.append(i...
2018-08-25 10:33:43
353
原创 Double Link List
Double Link Listclass Node(object): '''this is a node''' def __init__(self, elem): self.elem = elem self.next = None self.prev = Noneclass DoubleLinkList(object):...
2018-08-25 10:07:53
740
原创 Single Circular Link List in Python
Single Circular Link Listclass Node(object): '''this is a node''' def __init__(self, elem): self.elem = elem self.next = Noneclass SingleCircularLinkList(object): '''...
2018-08-25 10:06:04
165
原创 Single Link List in Python
Single Link Listclass Node(object): '''this is a node''' def __init__(self, elem): self.elem = elem self.next = Noneclass SingleLinkList(object): '''this is a Singly ...
2018-08-25 10:02:22
403
原创 Remove duplicate list in Python
Method onedef distinct(list_1): list_2 = set(list_1) list_3 = list(list_2) print(list_3)def main(): list_1 = [1,1,6,3,1,5,2] distinct(list_1)if __name__ == '__main__': m...
2018-08-22 08:34:42
573
原创 __getattrinute__ in Python
Method of restricting attribute accessclass GetAttribute(): def __init__(self, name): self.name = name def __getattribute__(self, item): print('sss') return o...
2018-08-21 11:02:48
144
原创 File copy in Python
File copy# Copy data functiondef copyData(old_file, new_file): while True: fileData = old_file.read(1024) if len(fileData) == 0: break new_file.write(fileD...
2018-08-17 21:43:41
201
原创 Swap the values of 2 variables in Python
Swap the values of 2 variables# Requirements: Swap the values of a and bdef main(): a = 5 b = 4 print('a = %d, b = %d'%(a, b))if __name__ == '__main__': main()----------results...
2018-08-16 20:39:36
238
原创 python_Notes
Notes# : Single-Line Comments ”’ multiline comment ”’#coding=utf-8 #in python2, this sentence must be added to the beginning，otherwise will be wrong when appear Chinese words
2018-08-16 15:26:19
125
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