今天在学习生成器对象(generation object)运行以下代码时,遇到了一个错误: #定义生成器函数def liebiao(): for x in range(10): yield x#函数调用g = liebiao() #打印元素print(g.next())D:\>python test.pyTraceback (most recent call last): File "test.py", line 10, in <module> print(g.nex…
在python3下学习yield用法. 程序如下: def bar(n): m = n while True: m += 1 yield m b = bar(3) print(b.next()) 程序报错 'generator' object has no attribute 'next' 错误原因 python 3.x中 generator(有yield关键字的函数则会被识别为generator函数)中的next变为__next__了,next是python 3.x以前版本中的方法.…
环境:PyCharm+Anaconda python版本:3.6 协程测试: #!/usr/bin/env python # -*- coding:utf-8 -*- import time def consumer(): r = '' while True: n = yield r if not n: return print('[CONSUMER] Consumeing %s...' % n) time.sleep(1) r = '200 OK' def produce(c): c.next…
最近论文需要用到python做数据分析,python语法简单,但是Windows下安装第三方包恶心的要命,statsmodels用pip死活安装不上,网上查了说包相互依赖windows下的pip不能下载全,还有好几个其他的统计包也是如此,整晕了算. 看网上有些python大牛推荐Anaconda,可以解决包的问题,于是卸载本地的python,从官网上下了个Anconda玩玩,结果遇到新问题. 问题如下: An unexpected error has occurred. Please consi…
在一个小程序中写了一个登录视图函数,代码如下: @app.route('/login',methods = ['GET','POST']) @oid.loginhandler def login(): if g.user is not None and g.user.is_authenticated: return redirect(url_for('index')) form = LoginForm() if form.validate_on_submit(): session['rememb…
问题现象:最近在用pandas分析数据时,用hdf5存储结果,当我监听不同文件时,多个进程同时写入hdf5(save到不同group)时,报hdf5 AttributeError: 'UnImplemented' object has no attribute 'read',之后用ipython去查数据,报了以下错误HDF5ExtError: HDF5 error back trace File "H5Dio.c", line 173, in H5Dread can't rea…
按照官方的文档写的demo,只是多了个init函数,最终执行时提示没有_rules这个属性的错误日志如下: ...... File "C:\ProgramData\Anaconda3\lib\site-packages\scrapy\spiders\crawl.py", line 82, in _parse_response for request_or_item in self._requests_to_follow(response): File "C:\ProgramD…
运行下面的代码: if (locals().has_key('data')): del data gc.collect() 出错: if (locals().has_key('data')): AttributeError: 'dict' object has no attribute 'has_key' 这是因为换成了Python3.6.5,Python3.6.5已经删除了has_key()方法,改成了下面的写法: if 'data' in locals(): del data gc.coll…
Traceback (most recent call last):File "/opt/xuben-project/caffe/data/VOC0712/../../scripts/create_annoset.py", line 105, in <module>label_map = caffe_pb2.LabelMap()AttributeError: 'module' object has no attribute 'LabelMap'Traceback (most…