zdaiot

pip install requests
pip install pyqrcode
pip install pypng
pip install Pillow

import socket
import sys
from thread import *
 
HOST = ''   # Symbolic name meaning all available interfaces
PORT = 5555 # Arbitrary non-privileged port
lock = 0
client = 0
data = None
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print 'Socket created'
#Bind socket to local host and port
try:
    s.bind((HOST, PORT))
except socket.error , msg:
    print 'Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
    sys.exit()
     
print 'Socket bind complete'
 
#Start listening on socket
s.listen(10)
print 'Socket now listening'
 
#Function for handling connections. This will be used to create threads
def clientthread(conn, client):
    global data, lock
    #Sending message to connected client
    # conn.send('Welcome to the server. Type something and hit enter\n') #send only takes string
     
    #infinite loop so that function do not terminate and thread do not end.
    while True:
         
        #Receiving from client
        if client % 2 == 0:
            data = conn.recv(1024)
            reply = 'OK...' + data
            lock = 1
            if not data:
                break

            conn.sendall(reply)
        else:
            if lock == 1:
                conn.sendall(data)
                lock = 0

     
    #came out of loop
    conn.close()
 
#now keep talking with the client
while 1:

    #wait to accept a connection - blocking call
    conn, addr = s.accept()
    print 'Connected with ' + addr[0] + ':' + str(addr[1])
     
    #start new thread takes 1st argument as a function name to be run, second is the tuple of arguments to the function.
    start_new_thread(clientthread ,(conn,client,))
    client += 1
 
s.close()

# -*- coding: utf-8 -*-
import socket

HOST='127.0.0.1'
PORT=5555

s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)      #定义socket类型，网络通信，TCP
s.connect((HOST,PORT))       #要连接的IP与端口
while 1:
       cmd=raw_input("Please input cmd:")       #与人交互，输入命令
       s.sendall(cmd)      #把命令发送给对端
       data=s.recv(1024)     #把接收的数据定义为变量
       print(data)        #输出变量
s.close()   #关闭连接

>>> from datetime import datetime
>>> now = datetime.now() # 获取当前datetime
>>> print(now)
2015-05-18 16:28:07.198690
>>> print(type(now))
<class 'datetime.datetime'>

#include<stdio.h>
#include<malloc.h>
void selectionsort(int a[], int N)
{
    int i,j,k;
    for (i=1; i<N; i++)
    {
        for (j=i; j<N; j++)
        {
            if(a[j]<a[i-1])
            {
                k = a[i-1];
                a[i-1] = a[j];
                a[j] = k;
            }
        }
    }
}
int main()
{
    int N,i;
    int *a;
    printf("Please input the numbers:");
    scanf("%d", &N);
    a = (int* )malloc(N*sizeof(int));
    for(i=0; i<N; i++)
        scanf("%d",&a[i]);
    
    selectionsort(a, N);
    for(i=0; i<N; i++)
        printf("%d",a[i]);
}

#include<stdio.h>
#include<malloc.h>
void myprint(int *,int);
void merge(int* a, int p, int q, int r)
{
    int s,t,k;
    int *b;
    int i;
    b = (int*)malloc((r-p+1)*sizeof(int));
    s = p;
    t = q+1;
    k = 0;
    while ((s<=q)&&(t<=r))
        if(a[s]<=a[t])
            b[k++] = a[s++];
        else
            b[k++] = a[t++];
    if(s == q + 1)
        while (t<=r)
            b[k++] = a[t++];
    else
        while (s<=q)
            b[k++] = a[s++];
    k = 0;
    while (p<=r)
    {
        a[p++] = b[k++];
    }
}
int main()
{
    int N,j;
    int *a = NULL;
    printf("Please input the numbers:");
    scanf("%d", &N);
    a = (int* )malloc(N*sizeof(int));
    for(j=0; j<N; j++)
    {
        scanf("%d",&a[j]);
    }
    int s,i;
    int t = 1;
    while(t<=N)
    {
        s = t;  //s代表是被合并的数组大小,t代表的是合并之后的每一组的数组大小！
        t = 2*s;
        i = 0;   //i代表要合并的下一组的首项的下标
        while(i+t<=N)
        {
            merge(a,i,i+s-1,i+t-1);
            i = i+t;
        }
        if ((i+s)<=(N-1))   // n-1  是最后元素的下标
        {
            merge(a,i,i+s-1,N-1);
        }
    }
    myprint(a,N);
}
void myprint(int *a , int n){
    int i;
    for(i = 0; i < n; i++)
        printf("%3d",a[i]);
    printf("\n");
}