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    John Liu

    @John Liu

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    Posts made by John Liu

    • [Astar.wiki] Feedback Section: Theory part

      If you:

      • Noticed anything wrong with the notes
      • Want to recommend any new points
      • Or other complaints or advice

      Then Shoot it out! @Astatine-Tian and @JohnLiu will fix it ASAP!

      Link back to the notes:

      Chapter 1: Information Representation
      Chapter 2: Communication and Information Technology
      Chapter 3: Hardware
      [Chapter 4]
      Chapter 5: Processor Fundamentals
      [Chapter 6]
      Chapter 7: System Software
      Chapter 8: Security
      Chapter 9: Ethics and Ownership
      Chapter 10: Database

      We do sincerely appreciate your feedback!

      posted in Q & A
      J
      John Liu
    • <Testing> Feedback for Chapter 8: Security

      If you have noticed any problems with the notes, please post it below!

      We will look at it as soon as possible.

      Thanks, John.

      posted in Theory
      J
      John Liu
    • [Tip] How to make your package download MUCH FASTER

      When you download external packages, you would usually use the following commands in terminal:
      pip3 download <package>, e.g. pip3 download wxpython
      However default pip3 download source is from overseas. This leads to a very slow download speed -- 20kb/s for me. It took me half a day just to download the OpenCV4!

      Solution:

      Switch to a nearby server mirror. I can download packages at 2MbPS now!

      Shown below, the solution from https://www.jianshu.com/p/e993bdfff7b3 is clear. Thanks!

      07259bd0-2113-407f-861a-c1284b5f9724-image.png

      [global]
      index-url = http://mirrors.aliyun.com/pypi/simple/
      [install]
      trusted-host=mirrors.aliyun.com
      

      Fell free to comment below if you encountered any quesitions.

      posted in Python
      J
      John Liu
    • RE: Past Paper Crawler - Python Version

      PPC错误重现
      @Astatine-Tian

      1. After compiling, the program can be executed
      2. Compress and decompress. Execute new file.
      3. Warning: "Cannot open the file because unable to verify security."
      4. Manually click open. Can normally open.
      5. Select level. Cannot pull down subjects.

      Tried re-compile entire program. Retried steps 1-2.
      No warning shown in step 3. Can successfully execute.
      Cannot re-produce error anymore.

      posted in Creativity
      J
      John Liu
    • RE: GUI design

      PHP是世界上最好的语言!(

      posted in Python
      J
      John Liu