小编Ish*_*lor的帖子

我正在尝试安装lxml以在我的Mac上安装scrapy(v 10.9.4)

??ishaantaylor@Ishaans-MacBook-Pro.local ~
???  pip install lxml
Downloading/unpacking lxml
  Downloading lxml-3.4.0.tar.gz (3.5MB): 3.5MB downloaded
  Running setup.py (path:/private/var/folders/8l/t7tcq67d34v7qq_4hp3s1dm80000gn/T/pip_build_ishaantaylor/lxml/setup.py) egg_info for package lxml
    /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url'
      warnings.warn(msg)
    Building lxml version 3.4.0.
    Building without Cython.
    Using build configuration of libxslt 1.1.28

    warning: no previously-included files found matching '*.py'
Installing collected packages: lxml
  Running setup.py install for lxml
    /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url'
      warnings.warn(msg)
    Building lxml version 3.4.0.
    Building without Cython.
    Using build configuration of libxslt 1.1.28
    building 'lxml.etree' …

我在MacBook上为不同的项目安装了几个版本,现在才意识到这是一个错误.我用自制软件安装它,通过python的网站安装它(Python 2.7.8 Mac OS X 64-bit/32-bit x86-64/i386 Installer (for Mac OS X 10.6 and later [2]))和其他我不记得的方法.我正在运行10.9.4 OS X.

我想知道如何在我的计算机上找到所有python安装的位置,并删除除本机之外的所有依赖它们的包和包.我想从头开始而不重新安装我的操作系统.

另外,我想知道我是否可以应用相同的方法来查找所有pip相关文件.

更新:

which -a python给我每个可执行python的所有路径.有多个是正常的吗？

??ishaantaylor@Ishaans-MacBook-Pro.local ~
???  which -a python
/usr/bin/python
/usr/bin/python
/usr/bin/python
/usr/bin/python
/usr/bin/python
/usr/bin//python
/usr/bin//python
/usr/bin/python

git和github的新功能.

我想在本地和远程替换master我的其他分支的git 分支bridge.问题是git无法解析bridge分支的引用.问题来自推向github.

git树是如何形成的:

1. 通过Git GUI启动master分支.
2. 继续然后意识到它并不那么伟大并且转变为Bash.
3. 由于本地主分支的提示落后于远程对手的一端,因此无法再向github推送.

4. 为了规避,我创建了另一个名为bridge的分支.我不喜欢我已将网桥设为默认设置,因此我尝试将其更改为主设备使用:

   git checkout better_branch
   git merge --strategy=ours master    # keep the content of this branch, but record a merge
   git checkout master
   git merge better_branch             # fast-forward master up to the merge
   

5. 它在当地工作.但是,当我试图推动时,我得到以下内容:

   NAME@**** /C/Users/NAME/Documents/GitHub/tabtrack (master)
   $ git push
   warning: push.default is unset; its implicit value is changing in
   Git 2.0 from 'matching' to 'simple'. To squelch this message
   and maintain the current behavior after the …

尝试运行以下代码时出现属性错误:

import cv2
import cv2.cv as cv
import numpy as np 


def main():
    img = cv2.imread('images/g1.jpg',0);

    print(img)

    img = cv2.medianBlur(img,5)
    cimg = cv2.cvtColor(img,cv2.COLOR_GRAY2BGR)

    circles = cv2.HoughCircles(img, cv.HOUGH_GRADIENT, 1, 20, param1=50, param2=30, minRadius=0, maxRadius=0)

    circles = np.uint16(np.around(circles))
    for i in circles[0,:]:
        # draw the outer circle
        cv2.circle(cimg,(i[0],i[1]),i[2],(0,255,0),2)
        # draw the center of the circle
        cv2.circle(cimg,(i[0],i[1]),2,(0,0,255),3)

    cv2.imshow('detected circles',cimg)
    cv2.waitKey(0)
    cv2.destroyAllWindows()

我试图找到解决这个问题的方法,我用了cv2替换cv了

circles = cv2.HoughCircles(img, cv.HOUGH_GRADIENT, 1, 20, param1=50, param2=30, minRadius=0, maxRadius=0)

但是,我仍然得到错误.