原创 File "/usr/bin/pip3", line 9, in from pip import main ImportError: cannot import name
File “/usr/bin/pip3”, line 9, in from pip import main ImportError: cannot import name ‘main’ https://askubuntu.com
2020-06-13 08:39:10
原创 rebase in git
相信對於很多使用git的用戶來說, rebase 和 merge像兩個惡夢一樣, 到底應該是從哪個branch rebase/merge 到哪個branch? rebase和merge又有什麼區別? 我先回答一下第一問題: 如
2020-06-13 08:39:10
原创 關於vertical layout不能水平居中對齊的原因
vertical layout只管垂直分佈, 所以如果其中某個widget不能水平對齊, 則創建一個qWidget, 然後在qWidget裏面把widget水平對齊,
2020-06-13 08:39:10
原创 find empty files or non-empty files in a folder
The case is when I run condor, I will get some .out, .error files. if there are errors, the .error file will not be
2020-06-13 08:39:10
原创 install java 11 on ubuntu16
sudo apt-get install openjdk-11-jdk-headless then check the folder /usr/lib/jvm/java-11-openjdk-amd64/bin make sur
2020-06-13 08:39:10
原创 '&' and 'and' difference in python
idx_b = data[:,1] == 0 and data[:,4] == 1 用and會提示錯誤， 因爲and 最終只給定一個bool值， 要麼用.all() 或 .any() 所以這裏用& 是正確， 會給定一個bool值
2020-06-13 08:39:10
原创 search element in list and narray
Python List index() The index() method searches an element in the list and returns its index. In simple terms, the
2020-06-13 08:39:10
原创 QTextEdit 不允許輸入文字
禁用keyPressEvent void ImageEdit::keyPressEvent(QKeyEvent *event) { // qDebug() << "keypressed"; if ((event
2020-06-13 08:39:10
原创 ffmpeg命令
extract_command = 'ffmpeg -i ' + merged_4_video_name + ' -start_number 0 ' + merged_fold + '/%08d.png'
2020-04-01 13:30:17
原创 BadZipfile: File is not a zip file
try: pip install --no-cache-dir <package_name>, it will work https://stackoverflow.com/questions/34889056/trying-to
2020-03-04 02:03:05
原创 undo the local changes
引用自https://docs.gitlab.com/ee/topics/git/numerous_undo_possibilities_in_git/ At this point there are 3 options to u
2020-02-22 06:16:17
原创 git .gitignore file does not work
https://stackoverflow.com/questions/11451535/gitignore-is-ignored-by-git git rm -r --cached . git add . 點贊
2020-02-22 06:16:17
原创 解決PyCharm調試查看變量時一直顯示collecting data並報錯Timeout waiting for response且看不到任何內容
問題描述 如題，在用PyCharm進行Python代碼調試查看具體變量時，會隨機遇到一直顯示collecting data，到最後報錯Timeout waiting for response，在界面中看不到變量內部的內容
2020-02-22 06:16:17
原创 git branch commands
https://git-scm.com/book/en/v2/Git-Branching-Basic-Branching-and-Merging $ git checkout -b iss53 Switched to a new
2020-02-22 06:16:17
原创 git merge two branches
say i have two branches: condor and master Then I do some changes on master where I edited on my laptop, then apply
2020-02-22 06:16:17