一，准备工作
首先，你需要一个谷歌账号，翻墙工具。
1.登陆谷歌账号，访问谷歌api，如下图：（因为我已有项目所以，最上方栏显示了我的一个项目）
2.点击 
3.启动API和服务
点击“启动API和服务”，在新加载的页面下拉找到YouTube的相关项，如下图：
这里我们选择第一个。点击，跳转到如下界面：点击启用。
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依次点击左上角
点击“创建凭据”，在弹出框选择“API密匙”
选择，“限制密匙”，在新界面选择“API限制”，保存此处生成的API密匙！！！
在“API限制”下拉菜单中选择
二，开始写程序
此处参考官方文档说明：“https://developers.google.com/youtube/v3/code_samples/点我打开”；
模拟实现：“https://developers.google.com/apis-explorer/#p/youtube/v3/点我打开”
GitHub中所有的样本代码示例，包含各种语言版本。“https://github.com/youtube/api-samples点击打开”
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下面的代码是根据“https://developers.google.com/youtube/v3/code_samples/python#search_by_keyword点击打开”处的代码修改而来：（使用的是Python语言）
下面代码中用横线穿过的3处根据自己的api密匙及代理进行替换。
#!/usr/bin/python # -*- coding: UTF-8 -*- from googleapiclient.discovery import build from googleapiclient.errors import HttpError import socks import socket DEVELOPER_KEY = '把你申请到的api密匙填写到这里' YOUTUBE_API_SERVICE_NAME = 'youtube' YOUTUBE_API_VERSION = 'v3' def youtube_search(options): socks.setdefaultproxy(socks.PROXY_TYPE_HTTP, "此处写你的代理IP",此处写你的代理端口号) socket.socket = socks.socksocket youtube = build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION, developerKey=DEVELOPER_KEY) # Call the search.list method to retrieve results matching the specified # query term. search_response = youtube.search().list( q=options['q'], part='id,snippet', maxResults=options['max_results'] ).execute() videos = [] channels = [] playlists = [] # Add each result to the appropriate list, and then display the lists of # matching videos, channels, and playlists. for search_result in search_response.get('items', []): if search_result['id']['kind'] == 'youtube#video': videos.append('%s (%s)' % (search_result['snippet']['title'], search_result['id']['videoId'])) elif search_result['id']['kind'] == 'youtube#channel': channels.append('%s (%s)' % (search_result['snippet']['title'], search_result['id']['channelId'])) elif search_result['id']['kind'] == 'youtube#playlist': playlists.append('%s (%s)' % (search_result['snippet']['title'], search_result['id']['playlistId'])) print 'Videos:\n', '\n'.join(videos), '\n' print 'Channels:\n', '\n'.join(channels), '\n' print 'Playlists:\n', '\n'.join(playlists), '\n' if __name__ == '__main__': args = {'q': 'boating|sailing –fishing', 'max_results': 20} try: youtube_search(args) except HttpError, e: print 'An HTTP error %d occurred:\n%s' % (e.resp.status, e.content)
以下socks代码是设置代理使用（暂时不是很明白）：
"""SocksiPy - Python SOCKS module. Version 1.00 Copyright 2006 Dan-Haim. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of Dan Haim nor the names of his contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY DAN HAIM "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAN HAIM OR HIS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMANGE. This module provides a standard socket-like interface for Python for tunneling connections through SOCKS proxies. """ import socket import struct PROXY_TYPE_SOCKS4 = 1 PROXY_TYPE_SOCKS5 = 2 PROXY_TYPE_HTTP = 3 _defaultproxy = None _orgsocket = socket.socket class ProxyError(Exception): def __init__(self, value): self.value = value def __str__(self): return repr(self.value) class GeneralProxyError(ProxyError): def __init__(self, value): self.value = value def __str__(self): return repr(self.value) class Socks5AuthError(ProxyError): def __init__(self, value): self.value = value def __str__(self): return repr(self.value) class Socks5Error(ProxyError): def __init__(self, value): self.value = value def __str__(self): return repr(self.value) class Socks4Error(ProxyError): def __init__(self, value): self.value = value def __str__(self): return repr(self.value) class HTTPError(ProxyError): def __init__(self, value): self.value = value def __str__(self): return repr(self.value) _generalerrors = ("success", "invalid data", "not connected", "not available", "bad proxy type", "bad input") _socks5errors = ("succeeded", "general SOCKS server failure", "connection not allowed by ruleset", "Network unreachable", "Host unreachable", "Connection refused", "TTL expired", "Command not supported", "Address type not supported", "Unknown error") _socks5autherrors = ("succeeded", "authentication is required", "all offered authentication methods were rejected", "unknown username or invalid password", "unknown error") _socks4errors = ("request granted", "request rejected or failed", "request rejected because SOCKS server cannot connect to identd on the client", "request rejected because the client program and identd report different user-ids", "unknown error") def setdefaultproxy(proxytype=None, addr=None, port=None, rdns=True,username=None,password=None): """setdefaultproxy(proxytype, addr[, port[, rdns[, username[, password]]]]) Sets a default proxy which all further socksocket objects will use, unless explicitly changed. """ global _defaultproxy _defaultproxy = (proxytype,addr,port,rdns,username,password) class socksocket(socket.socket): """socksocket([family[, type[, proto]]]) -> socket object Open a SOCKS enabled socket. The parameters are the same as those of the standard socket init. In order for SOCKS to work, you must specify family=AF_INET, type=SOCK_STREAM and proto=0. """ def __init__(self, family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0, _sock=None): _orgsocket.__init__(self,family,type,proto,_sock) if _defaultproxy != None: self.__proxy = _defaultproxy else: self.__proxy = (None, None, None, None, None, None) self.__proxysockname = None self.__proxypeername = None def __recvall(self, bytes): """__recvall(bytes) -> data Receive EXACTLY the number of bytes requested from the socket. Blocks until the required number of bytes have been received. """ data = "" while len(data) < bytes: data = data + self.recv(bytes-len(data)) return data def setproxy(self,proxytype=None,addr=None,port=None,rdns=True,username=None,password=None): """setproxy(proxytype, addr[, port[, rdns[, username[, password]]]]) Sets the proxy to be used. proxytype - The type of the proxy to be used. Three types are supported: PROXY_TYPE_SOCKS4 (including socks4a), PROXY_TYPE_SOCKS5 and PROXY_TYPE_HTTP addr - The address of the server (IP or DNS). port - The port of the server. Defaults to 1080 for SOCKS servers and 8080 for HTTP proxy servers. rdns - Should DNS queries be preformed on the remote side (rather than the local side). The default is True. Note: This has no effect with SOCKS4 servers. username - Username to authenticate with to the server. The default is no authentication. password - Password to authenticate with to the server. Only relevant when username is also provided. """ self.__proxy = (proxytype,addr,port,rdns,username,password) def __negotiatesocks5(self,destaddr,destport): """__negotiatesocks5(self,destaddr,destport) Negotiates a connection through a SOCKS5 server. """ # First we'll send the authentication packages we support. if (self.__proxy[4]!=None) and (self.__proxy[5]!=None): # The username/password details were supplied to the # setproxy method so we support the USERNAME/PASSWORD # authentication (in addition to the standard none). self.sendall("\x05\x02\x00\x02") else: # No username/password were entered, therefore we # only support connections with no authentication. self.sendall("\x05\x01\x00") # We'll receive the server's response to determine which # method was selected chosenauth = self.__recvall(2) if chosenauth[0] != "\x05": self.close() raise GeneralProxyError((1,_generalerrors[1])) # Check the chosen authentication method if chosenauth[1] == "\x00": # No authentication is required pass elif chosenauth[1] == "\x02": # Okay, we need to perform a basic username/password # authentication. self.sendall("\x01" + chr(len(self.__proxy[4])) + self.__proxy[4] + chr(len(self.proxy[5])) + self.__proxy[5]) authstat = self.__recvall(2) if authstat[0] != "\x01": # Bad response self.close() raise GeneralProxyError((1,_generalerrors[1])) if authstat[1] != "\x00": # Authentication failed self.close() raise Socks5AuthError,((3,_socks5autherrors[3])) # Authentication succeeded else: # Reaching here is always bad self.close() if chosenauth[1] == "\xFF": raise Socks5AuthError((2,_socks5autherrors[2])) else: raise GeneralProxyError((1,_generalerrors[1])) # Now we can request the actual connection req = "\x05\x01\x00" # If the given destination address is an IP address, we'll # use the IPv4 address request even if remote resolving was specified. try: ipaddr = socket.inet_aton(destaddr) req = req + "\x01" + ipaddr except socket.error: # Well it's not an IP number, so it's probably a DNS name. if self.__proxy[3]==True: # Resolve remotely ipaddr = None req = req + "\x03" + chr(len(destaddr)) + destaddr else: # Resolve locally ipaddr = socket.inet_aton(socket.gethostbyname(destaddr)) req = req + "\x01" + ipaddr req = req + struct.pack(">H",destport) self.sendall(req) # Get the response resp = self.__recvall(4) if resp[0] != "\x05": self.close() raise GeneralProxyError((1,_generalerrors[1])) elif resp[1] != "\x00": # Connection failed self.close() if ord(resp[1])<=8: raise Socks5Error(ord(resp[1]),_generalerrors[ord(resp[1])]) else: raise Socks5Error(9,_generalerrors[9]) # Get the bound address/port elif resp[3] == "\x01": boundaddr = self.__recvall(4) elif resp[3] == "\x03": resp = resp + self.recv(1) boundaddr = self.__recvall(resp[4]) else: self.close() raise GeneralProxyError((1,_generalerrors[1])) boundport = struct.unpack(">H",self.__recvall(2))[0] self.__proxysockname = (boundaddr,boundport) if ipaddr != None: self.__proxypeername = (socket.inet_ntoa(ipaddr),destport) else: self.__proxypeername = (destaddr,destport) def getproxysockname(self): """getsockname() -> address info Returns the bound IP address and port number at the proxy. """ return self.__proxysockname def getproxypeername(self): """getproxypeername() -> address info Returns the IP and port number of the proxy. """ return _orgsocket.getpeername(self) def getpeername(self): """getpeername() -> address info Returns the IP address and port number of the destination machine (note: getproxypeername returns the proxy) """ return self.__proxypeername def __negotiatesocks4(self,destaddr,destport): """__negotiatesocks4(self,destaddr,destport) Negotiates a connection through a SOCKS4 server. """ # Check if the destination address provided is an IP address rmtrslv = False try: ipaddr = socket.inet_aton(destaddr) except socket.error: # It's a DNS name. Check where it should be resolved. if self.__proxy[3]==True: ipaddr = "\x00\x00\x00\x01" rmtrslv = True else: ipaddr = socket.inet_aton(socket.gethostbyname(destaddr)) # Construct the request packet req = "\x04\x01" + struct.pack(">H",destport) + ipaddr # The username parameter is considered userid for SOCKS4 if self.__proxy[4] != None: req = req + self.__proxy[4] req = req + "\x00" # DNS name if remote resolving is required # NOTE: This is actually an extension to the SOCKS4 protocol # called SOCKS4A and may not be supported in all cases. if rmtrslv==True: req = req + destaddr + "\x00" self.sendall(req) # Get the response from the server resp = self.__recvall(8) if resp[0] != "\x00": # Bad data self.close() raise GeneralProxyError((1,_generalerrors[1])) if resp[1] != "\x5A": # Server returned an error self.close() if ord(resp[1]) in (91,92,93): self.close() raise Socks4Error((ord(resp[1]),_socks4errors[ord(resp[1])-90])) else: raise Socks4Error((94,_socks4errors[4])) # Get the bound address/port self.__proxysockname = (socket.inet_ntoa(resp[4:]),struct.unpack(">H",resp[2:4])[0]) if rmtrslv != None: self.__proxypeername = (socket.inet_ntoa(ipaddr),destport) else: self.__proxypeername = (destaddr,destport) def __negotiatehttp(self,destaddr,destport): """__negotiatehttp(self,destaddr,destport) Negotiates a connection through an HTTP server. """ # If we need to resolve locally, we do this now if self.__proxy[3] == False: addr = socket.gethostbyname(destaddr) else: addr = destaddr self.sendall("CONNECT " + addr + ":" + str(destport) + " HTTP/1.1\r\n" + "Host: " + destaddr + "\r\n\r\n") # We read the response until we get the string "\r\n\r\n" resp = self.recv(1) while resp.find("\r\n\r\n")==-1: resp = resp + self.recv(1) # We just need the first line to check if the connection # was successful statusline = resp.splitlines()[0].split(" ",2) if statusline[0] not in ("HTTP/1.0","HTTP/1.1"): self.close() raise GeneralProxyError((1,_generalerrors[1])) try: statuscode = int(statusline[1]) except ValueError: self.close() raise GeneralProxyError((1,_generalerrors[1])) if statuscode != 200: self.close() raise HTTPError((statuscode,statusline[2])) self.__proxysockname = ("0.0.0.0",0) self.__proxypeername = (addr,destport) def connect(self,destpair): """connect(self,despair) Connects to the specified destination through a proxy. destpar - A tuple of the IP/DNS address and the port number. (identical to socket's connect). To select the proxy server use setproxy(). """ # Do a minimal input check first if (type(destpair) in (list,tuple)==False) or (len(destpair)<2) or (type(destpair[0])!=str) or (type(destpair[1])!=int): raise GeneralProxyError((5,_generalerrors[5])) if self.__proxy[0] == PROXY_TYPE_SOCKS5: if self.__proxy[2] != None: portnum = self.__proxy[2] else: portnum = 1080 _orgsocket.connect(self,(self.__proxy[1],portnum)) self.__negotiatesocks5(destpair[0],destpair[1]) elif self.__proxy[0] == PROXY_TYPE_SOCKS4: if self.__proxy[2] != None: portnum = self.__proxy[2] else: portnum = 1080 _orgsocket.connect(self,(self.__proxy[1],portnum)) self.__negotiatesocks4(destpair[0],destpair[1]) elif self.__proxy[0] == PROXY_TYPE_HTTP: if self.__proxy[2] != None: portnum = self.__proxy[2] else: portnum = 8080 _orgsocket.connect(self,(self.__proxy[1],portnum)) self.__negotiatehttp(destpair[0],destpair[1]) elif self.__proxy[0] == None: _orgsocket.connect(self,(destpair[0],destpair[1])) else: raise GeneralProxyError((4,_generalerrors[4]))