本文目录一览:
- 1、糗事百科图片文件夹在哪
- 2、oppo机上老是出现qsbk.app停止运行 怎么办
- 3、学习scrapy爬虫,请帮忙看下问题出在哪
- 4、python 把list元素插入数据库
- 5、http://www.qsbk.cn/WuLi/TiKu/1/2007/01/33458392909.shtml
糗事百科图片文件夹在哪
你手机的的sd卡里面,文件管理有个“qsbk"命名的文件夹就是它,里面就只有图片,PS:图片你要先下载啊.......我也是糗友
oppo机上老是出现qsbk.app停止运行 怎么办
你好,停止运行的话你可以在设置--应用程序--全部--找到相应的程序--清理数据重启手机观察的。这里的清理数据不会丢失资料。游戏无反应或者反应慢,一般是以下几个因素导致的:1、一次运行多个应用程序,建议清理后台 2、下载了很多第三方软件,导致中毒或者不兼容。建议卸载非软件商店下载的软件 3、缓存文件过多长时间没有清理,建议清理缓存。清理缓存方法:在手机关机后,同时按电源键和音量减8秒左右,进入recovery模式,选择清除缓存,清理后重启手机,您再观察看看。清理缓存不会丢失资料,请您放心的,同时也请您不要选错。
若您还有其他的问题咨询,您可以进入OPPO企业平台向客服咨询提问喔!
学习scrapy爬虫,请帮忙看下问题出在哪
zou@zou-VirtualBox:~/qsbk$ tree
.
items.py
qsbk
nit__.py
items.py
pipelines.py
settings.py
spiders
_init__.py
qsbk_spider.py
scrapy.cfg
-------------------------
vi items.py
from scrapy.item import Item,Field
class TutorialItem(Item):
# define the fields for your item here like:
# name = Field()
pass
class Qsbk(Item):
title = Field()
link = Field()
desc = Field()
-----------------------
vi qsbk/spiders/qsbk_spider.py
from scrapy.spider import Spider
class QsbkSpider(Spider):
name = "qsbk"
allowed_domains = ["qiushibaike.com"]
start_urls = [""]
def parse(self, response):
filename = response
open(filename, 'wb').write(response.body)
------------------------
然后我 scrapy shell 想先把网页取下来,再xpath里面的子节点(即一些内容)
这个想法应该没错吧,但是到scrapy shell 的时候网页内容就无法显示了,
错误反馈:
Python code
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zou@zou-VirtualBox:~/qsbk$ scrapy shell
/home/zou/qsbk/qsbk/spiders/qsbk_spider.py:1: ScrapyDeprecationWarning: Module `scrapy.spider` is deprecated, use `scrapy.spiders` instead
from scrapy.spider import Spider
2015-12-21 00:18:30 [scrapy] INFO: Scrapy 1.0.3 started (bot: qsbk)
2015-12-21 00:18:30 [scrapy] INFO: Optional features available: ssl, http11
2015-12-21 00:18:30 [scrapy] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'qsbk.spiders', 'SPIDER_MODULES': ['qsbk.spiders'], 'LOGSTATS_INTERVAL': 0, 'BOT_NAME': 'qsbk'}
2015-12-21 00:18:30 [scrapy] INFO: Enabled extensions: CloseSpider, TelnetConsole, CoreStats, SpiderState
2015-12-21 00:18:30 [scrapy] INFO: Enabled downloader middlewares: HttpAuthMiddleware, DownloadTimeoutMiddleware, UserAgentMiddleware, RetryMiddleware, DefaultHeadersMiddleware, MetaRefreshMiddleware, HttpCompressionMiddleware, RedirectMiddleware, CookiesMiddleware, ChunkedTransferMiddleware, DownloaderStats
2015-12-21 00:18:30 [scrapy] INFO: Enabled spider middlewares: HttpErrorMiddleware, OffsiteMiddleware, RefererMiddleware, UrlLengthMiddleware, DepthMiddleware
2015-12-21 00:18:30 [scrapy] INFO: Enabled item pipelines:
2015-12-21 00:18:30 [scrapy] DEBUG: Telnet console listening on 127.0.0.1:6023
2015-12-21 00:18:30 [scrapy] INFO: Spider opened
2015-12-21 00:18:30 [scrapy] DEBUG: Retrying GET ; (failed 1 times): [twisted.python.failure.Failure class 'twisted.internet.error.ConnectionDone']
2015-12-21 00:18:30 [scrapy] DEBUG: Retrying GET ; (failed 2 times): [twisted.python.failure.Failure class 'twisted.internet.error.ConnectionDone']
2015-12-21 00:18:30 [scrapy] DEBUG: Gave up retrying GET ; (failed 3 times): [twisted.python.failure.Failure class 'twisted.internet.error.ConnectionDone']
Traceback (most recent call last):
File "/usr/local/bin/scrapy", line 11, in module
sys.exit(execute())
File "/usr/local/lib/python2.7/dist-packages/scrapy/cmdline.py", line 143, in execute
_run_print_help(parser, _run_command, cmd, args, opts)
File "/usr/local/lib/python2.7/dist-packages/scrapy/cmdline.py", line 89, in _run_print_help
func(*a, **kw)
File "/usr/local/lib/python2.7/dist-packages/scrapy/cmdline.py", line 150, in _run_command
cmd.run(args, opts)
File "/usr/local/lib/python2.7/dist-packages/scrapy/commands/shell.py", line 63, in run
shell.start(url=url)
File "/usr/local/lib/python2.7/dist-packages/scrapy/shell.py", line 44, in start
self.fetch(url, spider)
File "/usr/local/lib/python2.7/dist-packages/scrapy/shell.py", line 87, in fetch
reactor, self._schedule, request, spider)
File "/usr/lib/python2.7/dist-packages/twisted/internet/threads.py", line 122, in blockingCallFromThread
result.raiseException()
File "string", line 2, in raiseException
twisted.web._newclient.ResponseNeverReceived: [twisted.python.failure.Failure class 't
python 把list元素插入数据库
两种方法
1、python读取文件后,解析value中的id,存储到list中,再读另一个文件时,去list里判断是否已存在
2、python读取另一个文件后,解析values中的id,脚本直接去数据库判断是否存在
其实数据库可以设计id未主键,这样你直接insert即可,出错的话,数据库会容错
http://www.qsbk.cn/WuLi/TiKu/1/2007/01/33458392909.shtml
1.首先在下落过程中对小球b进行受力分析,下落过程中受到自身重力和绳子的拉力,绳子的拉力很好求,就是g*sin30,所以b小球的受到的合力为mg-mg*sin30=1/2*mg,b球的加速度为a=1/2g,所以b小球的落地速度v的平法=2*a*h=2*0.5*10*0.2=2,所以v=根号2。
2.由于a小球与b小球有绳子相连,所以速度大小和b小球相同,而经过受力分析,此时a球的受到的合力方向沿斜面向下,大小为mg*sin30,所以加速度a1为-1/2g,v的平方=2*a1*s,所以s=v的平方/2*0.5*g=2/(2*0.5*10)=1m