python让我苦了好久 求解求解

源码:dist_transform=cv2.distanceTransform(opening.cv2.DIST_L2,5) 为什么会报下面的错误
AttributeError: 'module' object has no attribute 'cv_dist_l2'

2个回答

换成2
cv2.distanceTransform(opening,2,5)

就是没有cv_dist_l2 这个属性,你的用的类是不是对的。

Link926
Link926 我那个是开源代码??求正确用法,我实在没办法了
3 年多之前 回复
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nested exception is org.hibernate.DuplicateMappingException: Duplicate collection role mapping com.pojos.QNEOrder.passengersrn at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1403)rn at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)rn at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)rn at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)rn at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)rn at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)rn at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)rn at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)rn ... 39 morernCaused by: org.hibernate.DuplicateMappingException: Duplicate collection role mapping com.pojos.QNEOrder.passengersrn at org.hibernate.cfg.Mappings.addCollection(Mappings.java:147)rn at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2085)rn at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2060)rn at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:381)rn at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:295)rn at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:166)rn at org.hibernate.cfg.Configuration.add(Configuration.java:716)rn at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:551)rn at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:677)rn at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)rn at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1460)rn at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1400)rn ... 46 morern2015-9-19 17:18:58 org.apache.catalina.core.StandardContext listenerStartrn严重: Exception sending context initialized event to listener instance of class com.sxy.tasks.TimerManagerrnorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataLimitDao' defined in file [E:\tomcat6036\webapps\sxyerp\WEB-INF\classes\financeBean.xml]: Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; 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求解求解
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求解 求解。。。
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求解求解!!
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我下载的Linux是RHEL 6.0 虚拟机安装,刚接触Linux吧,跟着网上的步骤 搭建了一个vim的C/C++编程环境,在当时使用还是很正常的。 是在root下建立了一个.vim目录 和.vimrc文件,主要是些语法高亮 之类的 下载问题是 我昨天刚配好 是好好的 可是今天再打开,除了配色方案是昨天那样 什么语法高亮的 全没了。 还是root登录的系统啊。 请问这是什么原因?还有 昨天调配色方案时,我在vi下 打:colorscheme 然后TAB 是不能自动补全的,当我把colors目录放到.vim目录下后 这个命令就可以自动补全了,可是今天 这个命令 又不能自动补全了, 心里着实有点急躁。 请问是什么原因造成的?怎么解决?
100分求解<><><><><><><><><>json让我疑惑<><><><<>>>>><<><><
网上说json取代xmlrn但我看了半天也没明白.(下面是我的理解,请老师们给我解一下)rnjson:我只感到是从数据库(或其他地方得到)中提取数据然后写成json传到前台用rnxml:作为一种数据文件放在后台,要时直接取来用.(就有点数据库的作用)rn我就不明白明明是两种用处,一个是数据传输,一个相当于数据库,为什么要说取代了?rn我说的可能不对,但我不知json是什么,也就更不明白用它了.rn献上100分,请大家说说.
这错误让我很纠结,求解!
[code=C/C++]#include rn#include rnrnVOID UnLoad(PDRIVER_OBJECT DriverObject)rnrn KdPrint("xxxx");rnrnrnNTSTATUSrnDriverEntry(rn IN PDRIVER_OBJECT DriverObject,rn IN PUNICODE_STRING RegistryPathrn )rnrn /* NTSTATUS status;*/rn DriverObject->DriverUnload = UnLoad;rn return 1;rn[/code]rnrnsource rnrn[code=C/C++]TARGETNAME=wdmrnTARGETPATH=objrnTARGETTYPE=DRIVERrnrnSOURCES= firstwdm.crnrn[/code]rnrn错误rnrn[code=C/C++]E:\DDK>buildrnpath contains nonexistant c:\program files (x86)\amd app\bin\x86, removingrnBUILD: Compile and Link for IA64rnBUILD: Loading e:\winddk\7600.16385.1\build.dat...rnBUILD: Computing Include file dependencies:rnBUILD: Start time: Sat Dec 17 20:59:02 2011rnBUILD: Examining e:\ddk directory for files to compile.rnBUILD: Saving e:\winddk\7600.16385.1\build.dat...rnBUILD: Compiling and Linking e:\ddk directoryrnCompiling - firstwdm.crn1>errors in directory e:\ddkrn1>e:\ddk\firstwdm.c(7) : error C2143: syntax error : missing ';' before 'string'rnrnLinking Executable - objchk_win7_ia64\ia64\wdm.sysrn1>link : error LNK1181: cannot open input file 'e:\ddk\objchk_win7_ia64\ia64\firrnstwdm.obj'rnBUILD: Finish time: Sat Dec 17 20:59:03 2011rnBUILD: Donernrn 3 files compiled - 2 Warnings - 1 Errorrn 1 executable built - 1 ErrorrnrnE:\DDK>[/code]rnrn初学DDK,理论学了很多,一编译就卡起了。纠结中。。。
菜鸟问题~~~~~~~~~~~~~~~~~~求解 求解 求解
小弟想实现一个功能就是:rnrn去指定的目录寻找一个txt文件(这个txt文件每天定时有人给我传),但是时间不确定,我得到文件后对他进行处理,但是由于时间不确定,所以有时在文件还没来的时候,windows的定时作业就启动了处理程序,所以请问各位大侠有没有什么方法能使我修改处理程序,让它隔一段时间就去监测是否存在文件,然后再调用。。rn谢谢了
求解啊 大神 想了好久啊
Farmer John purchased satellite photos of W x H pixels of his farm (1 <= W <= 80, 1 <= H <= 1000) and wishes to determine the largest 'contiguous' (connected) pasture. Pastures are contiguous when any pair of pixels in a pasture can be connected by traversing adjacent vertical or horizontal pixels that are part of the pasture. (It is easy to create pastures with very strange shapes, even circles that surround other circles.) rnrnEach photo has been digitally enhanced to show pasture area as an asterisk ('*') and non-pasture area as a period ('.'). Here is a 10 x 5 sample satellite photo: rnrn..*.....** rn.**..***** rn.*...*.... rn..****.*** rn..****.*** rnrnThis photo shows three contiguous pastures of 4, 16, and 6 pixels. Help FJ find the largest contiguous pasture in each of his satellite photos.rn Inputrn* Line 1: Two space-separated integers: W and H rn* Lines 2..H+1: Each line contains W "*" or "." characters representing one raster line of a satellite photograph.rnrn rn Outputrn* Line 1: The size of the largest contiguous field in the satellite photo.rn rnSample Inputrn10 5rn..*.....**rn.**..*****rn.*...*....rn..****.***rn..****.***rnSample Outputrn16rn
python 3.2加法求解
大家好!rnrn 请教一个简单的问题:rnrna = input ("Enter integer a:")rnb = input ("Enter integer b:")rnc = a + brnprint("a + b =",a + b)rnprint("c =",c)rnrn这段脚本运行的结果如下:rnrnEnter integer a:3rnEnter integer b:5rn[b]a + b = 35rnc = 35[/b]rnrn也就是说,录入a、b的值之后,期望值应该是“8”(两数值相加),但实际结果值为“35”,连接字符串了。不知道该怎么弄rnrn补充:我用的是python 3.2版本
Python 文件下载求解
最近刚接触Python语言,因为日常工作中有一项内容就是用git工具负责代码提交。大致流程就是先去服务器看有没有代码更新,有的话下载到本地,然后再传到另一台服务器上把更新的内容添加到对应的git分支上去。感觉这个过程很机械,理论上讲应该可以用Python写个脚本来代替这种重复劳动。rn 自己刚入职接触这块,水平实在太菜了,不知道去服务器下载代码包的语句改怎么写,(代码包很有规律,是变化的ID+递增的数字命名的)求犀利大神加以指导,小弟先谢谢了!
求解这段代码 python
class obj: rn def __init__(self, **kwargs):rn rn apply(self.set, (), kwargs)rnrn def set(self, **kwargs):rnrn for k, v in kwargs.items():rn setattr(self, k, v)rn print kwargs.items()rnrn代码如上所示,请问 apply(self.set, (), kwargs)是什么意思?很是困惑,apply的用法非常不明白。rn
python pygane 求解
里面用image.load图片,但是想过滤掉图片中的某一种颜色,能不能实现啊?
Python求解行列式
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python求解斐波那契数列
斐波那契数列指的是这样的一组数列: 0 1 1 2 3 5 8............ 后一个元素是前两个元素的和,现在我们要输出斐波那契数列当中的第n个,这里给出两种方法,其中第一个方法效率较低,在数列很大的时候速度不如第二个速度快,代码如下:
Python正则表达式求解
^(http|www)((?!"+excludeUrl+").)*$ excludeUrl是一个已知字符串 看不明白[color=#FF6600] "+excludeUrl+"[/color] 是什么意思 求大神
python 动态规划求解单源最短路径
#!/usr/bin/env python3 # -*- coding: utf-8 -*- """ Created on Thu May 30 10:53:38 2019 @author: lg """ import pandas as pd import numpy as np df1=pd.DataFrame(np.array([[4,5,2]]),index=["A"],column...
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常微分方程数值求解【python】
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Python 输出乱码,求解:)
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python web 框架求解?
目前游泳scrapy写好的爬虫,以及数据分析项目,两个是分开的。老师突然说要有一个系统演示,也就是说做成系统界面那种。请问路过的大佬,有没有简单的web框架推荐一下,或者解决思路? ...
python求解一元二次方程
import math def quadratic(a,b,c):                            if not isinstance(a,(int,float)): raise TypeError('a is not a number') if not isinstance(b,(int,float)): raise Type...
求解Python参数传递问题
def inc(x):rn return x+1rnrnrnfoo=10rnprint foornfoo=inc(foo)rnprint foorn结果:10rn 11rn从这段程序可以看出Python参数传递用的是值传递rn然后rndef inc(x):rn x[0]=x[0]+1rnrnfoo = [10]rninc(foo)rnprint foorn结果:[11]rn可是这一段代码又是怎么回事?书上只说是一个小技巧,希望哪位大牛能详细讲解下这个小技巧rnrnrnrn
python小白求解
# -*- coding: cp936 -*-rnli=[0,1]rnwhile 1:rn print('请输入一个正整数n,输入数值小于或等于0结束循环')rn n=input('n=')rn if n!=0:rn for x in range (2,n):rn li.append(li[-2]+li[-1])rn print lirn return li //疑问:如何令li返还为初始的li=[0,1]rn if n==0:rn breakrnrn
梯度下降求解逻辑回归(Python)
Logistic RegressionThe data我们将建立一个逻辑回归模型来预测一个学生是否被大学录取。假设你是一个大学系的管理员,你想根据两次考试的结果来决定每个申请人的录取机会。你有以前的申请人的历史数据,你可以用它作为逻辑回归的训练集。对于每一个培训例子,你有两个考试的申请人的分数和录取决定。为了做到这一点,我们将建立一个分类模型,根据考试成绩估计入学概率。import numpy as
Python 汉诺塔求解
知识点: 一个函数在其定义中调用自身的方法即为递归( recursion)。 构成递归需要满足两个条件:子问题与父问题存在同样的处理逻辑,递归出口—化简为非递归处理方式。 在某些场景下,使用递归,不仅可以大大减少程序的代码量,而且问题也会变得极其简单。 每一次函数的调用都涉及到一个桢栈的入栈到出栈,同时,会涉及到分配内存空间,保存参数,返回地址和临时变量,而且往栈里压入数据和弹出都需要时间...
python新人搞不懂,求解
各位大佬,我刚转入一个爬虫项目,同事给我这些东西。我查了一下大部分是框架。那么我从svn拉取项目,项目里面会包含这些吗。还是说拉取项目之后还要自己安装这些压缩包呢n![图片说明](https://img-ask.csdn.net/upload/201705/02/1493725308_315041.png)
python 求解小程序
#- 3 marks -#rndef shuffle(s1, s2):rn """rn PRE: s1 and s2 are strings; len(s1) == len(s2)rn POST: returns a "shuffled" version of s1 + s2: rn #s1[0] + s2[0] + s1[1] + s2[1] + ...rn """rnrn#- 3 marks -#rndef even_odd(s):rn """rn PRE: s is a string with even lengthrn POST: returns two strings: rn the first for the even positions, i.e., 0, 2, 4, ...rn the second for the odd positions, i.e., 1, 3, 5, ...rn """rnrn#- A sample main program, for testing only. -#rnrnstr1 = "bet"rnstr2 = "rah"rnrnshstrs = shuffle(str1, str2)rnprint "Shuffle " + str1 + " and " + str2 + " and you'll get " + shstrs + "."rn # should output: "Shuffle bet and rah and you'll get breath."rnrnileavd = "HWeolrllod !"rnword1, word2 = even_odd(ileavd)rnprint word1 + word2rn # should output a very pleasing stringrnrnrn小弟刚开始学习这个。。。实在研究不了。额。。rnrn还有另一个题目:rnrndef piglatin_ize(s):rn rn rn """rn PRE: s is a sentence.rn POST: returns a version of s in pig latin.rn """rnrns = "Hello world!"rnprint piglatin_ize(s)rn # should output "Ello-hay orld-way!"rnrns = "The quick brown fox jumped over a lazy dog."rnprint piglatin_ize(s)rn # should output "E-thay uick-qay own-bray ox-fay umped-jay over-way a-way azy-lay og-day."rnrns = "You sunk my battleship!"rnprint piglatin_ize(s)rn # should output "Ou-yay unk-say y-may attleship-bay!"rnrn######################################################################rn# #rn# Words in pig latin are constructed from the original English #rn# (usually) by extracting its first consonants and moving them to #rn# the end of the sentence. All words then get "ay" attached. #rn# #rn# There are a couple exceptions: #rn# #rn# 1. When the original word begins with a vowel (a,e,i,o,u), the #rn# result is the original word with "way" attached. #rn# #rn# 2. If "y" is not the first letter of the word, then it is not a #rn# consonant; otherwise it is a consonant. #rn# #rn######################################################################rn 谢谢大家了!!!在线等~~~~
[python] 动态规划求解背包问题
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