我正在尝试使用pygame-clients运行一个扭曲的服务器:
class ChatClientProtocol(LineReceiver):
def lineReceived(self,line):
print (line)
class ChatClient(ClientFactory):
def __init__(self):
self.protocol = ChatClientProtocol
def main():
flag = 0
default_screen()
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
return
elif event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:
return
elif event.type == pygame.MOUSEBUTTONDOWN and event.button == 1:
pos = pygame.mouse.get_pos()
# some rect.collidepoint(pos) rest of loop...
这是服务器:
from twisted.internet.protocol import Factory
from twisted.protocols.basic import LineReceiver
from twisted.internet import reactor
class Chat(LineReceiver):
def __init__(self, users, players):
self.users = users
self.name …对于我的生活,我无法解决为什么我得到一个invalid read size of 1这个代码片段,我很确定它与我有关虐待char *url pointer...
char *extractURL(char request[])
{
char *space = malloc(sizeof(char *));
space = strchr(request, ' ')+1;
char *hostend = malloc(sizeof(char *));
hostend = strchr(request, '\r');
int length = hostend - space;
if (length > 0)
{
printf("Mallocing %d bytes for url\n.", length+1);
char *url = (char *)malloc((length+1)*sizeof(char));
url = '\0';
strncat(url, space, length);
return url;
}
//else we have hit an error so return NULL
return NULL;
}
我得到的valgrind错误是:
==4156== Invalid …我SQLite的应用程序目前使用事务 - 既可以回滚也可以提高性能.我正在考虑用保存点替换所有交易.其原因是,应用程序是多线程的(是的,sqlite配置是线程安全的),并且在某些情况下,事务可能由两个线程在同一时间开始(在同一分贝).
BEGIN,COMMIT,ROLLBACK有SAVEPOINT xyz,RELEASE SAVEPOINT xyz,ROLLBACK TO SAVEPOINT xyz？我一直致力于项目Euler的一些问题/练习,希望练习/学习一些最佳算法和使用python编程习语.
我遇到了一个问题,要求找到所有使用至少两个值总和为100的独特组合.在研究这个问题时,我遇到了人们提到硬币问题和贪婪算法,这就是这个问题的意义所在.
我之前听说过贪婪的算法,但从未理解或使用它.我以为我会尝试一下.我仍然不确定这是否是正确的做法.
def greedy(amount):
combos = {}
ways = {}
denominations = [1,5,10,25]
## work backwards? ##
denominations.reverse()
for i in denominations:
## check to see current denominations maximum use ##
v = amount / i
k = amount % i
## grab the remainder in a variable and use this in a while loop ##
ways.update({i:v})
## update dictionarys ##
combos.update({i:ways})
while k != 0:
for j in denominations:
if j <= k:
n = k/j
k = …我有一个简单的聊天客户端,我试图将其Tkinter作为界面使用.我的问题是,当为聊天输入/输出运行mainloopwith 时.after,窗口会冻结并阻塞,直到收到另一条消息.
class Client(Frame):
def __init__(self, **kwargs):
Frame.__init__(self, Tk())
self.pack()
self.lb = Listbox(self, width=100, height=30)
self.lb.pack()
self.show_data = self.lb.after(1000, self.chat_handle)
self.entry = Entry(self)
self.entry.bind('<Return>', self.input_handle)
self.entry.pack(side=BOTTOM, fill=X)
def input_handle(self, event):
msg = self.entry.get()
self.entry.delete(0, 'end')
new_msg = 'privmsg %s :' % self.channel + msg + '\r\n'
self.client.sendall(new_msg)
self.lb.insert(END, self.nick + ' | ' + msg)
def chat_handle(self):
try:
self.data = self.client.recvfrom(1024)
except socket.error:
self.lb.insert(END, "Bad Connection!")
return
if self.data and len(self.data[0]) > 0:
self.lb.insert(END, …我是netlink编程新手.我正在编写一个generic netlink用于创建netlink协议族的程序.我在互联网上搜索了很多文档,我发现了一些"属性和策略",就像定义一个netlink家庭一样.
我对这些事情感到很困惑.
我发现了关于属性的轰鸣声 linux/netlink.h
<------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
+---------------------------+- - -+- - - - - - - - - -+- - -+
| Header | Pad | Payload | Pad |
| (struct nlattr) | ing | | ing |
+---------------------------+- - -+- - - - - - - - - -+- - -+
<-------------------- nlattr->nla_len -------------->
政策是一系列nla_policy结构.我的问题是:
我找到了一些关于"它定义属性类型"的政策,
这是什么意思？我的意思是"属性类型的含义是什么？"
这可能是一个无意义的问题,但我完全感到困惑.我一直试图了解这些事情超过三天,请帮助我.
谢谢..
我的多线程应用程序在调用PyImport_ImportModule("my_module").
BT 将发布在底部。
一些背景：
Run()函数，该函数使用虚拟方法来确定要执行的操作。Grasp_Behavior）中的（类）grasp_behaviorPyImport_ImportModule我的想法是，也许我不能在同一个解释器中两次导入模块。但我不知道如何检查它。我想我需要看看是否grasp_behavior在字典中，但我不知道是哪一个，也许我得到了__main__模块的字典？
但我可能是错的，任何建议都会非常有帮助！
在构造函数中：
//Check if Python is Initialized, otherwise initialize it
if(!Py_IsInitialized())
{
std::cout << "[GraspBehavior] InitPython: Initializing the Python Interpreter" << std::endl;
Py_Initialize();
PyEval_InitThreads(); //Initialize Python thread ability
PyEval_ReleaseLock(); //Release the implicit lock on the Python GIL
}
// --- Handle Imports ----
PyObject * pModule = PyImport_ImportModule("grasp_behavior"); …我一直在学习使用sqlite3和python.现在,我有一个功能,它会在互联网上查找该词的定义.然后我尝试将该单词存储在一个表中,并将定义存储到另一个表中,该表通过外键链接在一起.
像这样:
#! /usr/bin/env python
import mechanize
from BeautifulSoup import BeautifulSoup
import sys
import sqlite3
def dictionary(word):
br = mechanize.Browser()
response = br.open('http://www.dictionary.reference.com')
br.select_form(nr=0)
br.form['q'] = word
br.submit()
definition = BeautifulSoup(br.response().read())
trans = definition.findAll('td',{'class':'td3n2'})
fin = [i.text for i in trans]
query = {}
word_count = 1
def_count = 1
for i in fin:
query[fin.index(i)] = i
con = sqlite3.connect('vocab.db')
with con:
spot = con.cursor()
spot.execute("SELECT * FROM Words")
rows = spot.fetchall()
for row in rows:
word_count += 1
spot.execute("INSERT …我正在使用python2.7,我想知道使用元组进行pythons字符串插值的原因是什么.TypeErrors在做这么少的代码时,我开始陷入困境:
def show(self):
self.score()
print "Player has %s and total %d." % (self.player,self.player_total)
print "Dealer has %s showing." % self.dealer[:2]
打印:
Player has ('diamond', 'ten', 'diamond', 'eight') and total 18
Traceback (most recent call last):
File "trial.py", line 43, in <module>
Blackjack().player_options()
File "trial.py", line 30, in player_options
self.show()
File "trial.py", line 27, in show
print "Dealer has %s showing." % (self.dealer[:2])
TypeError: not all arguments converted during string formatting
所以我发现我需要更改错误来自的第四行,以此:
print "Dealer has %s %s showing." % …我努力了：
"Aliases": ["www.samplewebsite.com","samplewebsite.com"]
但我收到此错误：
Property validation failure: [Encountered unsupported properties in {/DistributionConfig/Origins/0}: [Aliases]]