小编Jam*_*les的帖子

在运行此程序以使用Python 2.7.8检索Twitter数据时:

#imports
from tweepy import Stream
from tweepy import OAuthHandler
from tweepy.streaming import StreamListener

#setting up the keys
consumer_key = '…………...'
consumer_secret = '………...'
access_token = '…………...'
access_secret = '……………..'

class TweetListener(StreamListener):
# A listener handles tweets are the received from the stream.
#This is a basic listener that just prints received tweets to standard output

def on_data(self, data):
    print (data)
    return True

def on_error(self, status):
    print (status)

#printing all the tweets to the standard output
auth = OAuthHandler(consumer_key, …

我正在尝试使用 LibVLC Python 绑定来播放内存流（Python 3.4、Windows 7、LibVLC 3.x）。最终，我的目标是将数据馈送到 BytesIO 实例中，然后 VLC 将从中读取和播放。但目前，我决定编写一个快速脚本来尝试从文件流中读取。这是代码和回溯 - 说我对 ctypes 很陌生是轻描淡写的，所以有人知道我做错了什么吗？

import ctypes
import io
import sys
import time

import vlc

MediaOpenCb = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_void_p, ctypes.POINTER(ctypes.c_void_p), ctypes.POINTER(ctypes.c_uint64))
MediaReadCb = ctypes.CFUNCTYPE(ctypes.c_ssize_t, ctypes.c_void_p, ctypes.c_char_p, ctypes.c_size_t)
MediaSeekCb = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_void_p, ctypes.c_uint64)
MediaCloseCb = ctypes.CFUNCTYPE(ctypes.c_void_p, ctypes.c_void_p)


def media_open_cb(opaque, data_pointer, size_pointer):
    data_pointer.value = opaque
    size_pointer.contents.value = sys.maxsize
    return 0


def media_read_cb(opaque, buffer, length):
    stream = ctypes.cast(opaque, ctypes.py_object).value
    new_data = stream.read(length.contents)
    buffer.contents.value = new_data
    return len(new_data)


def media_seek_cb(opaque, offset):
    stream = ctypes.cast(opaque, …

我正在尝试为一个接受一个ArrayList(包含整数)作为其中一个参数的类编写一个构造函数.稍后实例化此类时,我将传递一个适当的,预先填充的值列表,因此我不想在构造函数中创建一个空列表.

不幸的是,当我尝试编译下面的代码时,Java吐出了五个错误,都与第23行(我的构造函数的函数定义)有关.任何意见,将不胜感激:

/*
 * SumGenerator
 * 
 * @author James Scholes
*/

import java.util.ArrayList;
import java.util.Random;

public class SumGenerator
{
    // Some initial variables
    public int timesTable;
    public int multiple;

    /*
     * Constructor
     * 
     * @param timesTable(int): The times table to use for sum generation
     * @param limit(int): The highest multiple to use in sum generation
     * @param previousMultiples(ArrayList<Integer>): The previously used multiples to avoid sum duplication
    */
    public SumGenerator(int timesTable, int limit = 10, ArrayList<Integer> previousMultiples)
    {
        this.timesTable = timesTable; …