Python for WeChat

Sep 22, 2021

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

ItChat A complete and graceful API for Wechat. 微信个人号接口、微信机器人及命令行微信，三十行即可 …

Tips on OpenCV

Sep 22, 2021

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You can install OpenCV for Python using the following commands.

:::bash
sudo apt-get install libsm6 libxrender-dev
pip3 install opencv-python

If you use xinstall, you can install OpenCV for Python with the following single command.

:::bash
xinstall --sudo cv -ic

Jun 24, 2016

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Please refer to Command Line Tools for Mac File System for the macOS version.

Format disk partitions.

mkfs.ext4 /dev/sdb3

mkfs.ntfs /dev/sdb3 …

Apr 24, 2020

May 19, 2020

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Delta Lake

convert to delta [db_name.]table_name [partitioned by ...] [vacuum [retain number hours]]

vaccum

describe history db_name.table_name

can select from historical snapshot can also rollback to a historical snapshot rollback …

Sep 19, 2021

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!