Prepare release OpenCV 4.5.2

[asmorkalov]

Expected behaviour

Write here how did you expect the library to function.

Actual behaviour

Write here what went wrong.

Steps to reproduce

• example code
• operating system
• architecture (e.g. x86)
• opencv-python version

Issue submission checklist

• This is not a generic OpenCV usage question (looking for help for coding, other usage questions, homework etc.)
• I have read the README of this repository and understand that this repository provides only an automated build toolchain for OpenCV Python packages (there is no actual OpenCV code here)
• The issue is related to the build scripts in this repository, to the pre-built binaries or is a feature request (such as "please enable this additional dependency")
• I'm using the latest version of opencv-python

[sergregory]

Should be fixed with the #470

[johnnnya]

cv2.barcode_BarcodeDetector()

[fanqie03]

cv2.wechat_qrcode_WeChatQRCode
code in https://github.com/opencv/opencv_contrib/blob/master/modules/wechat_qrcode/src/wechat_qrcode.cpp#L156
doc in https://docs.opencv.org/master/d5/d04/classcv_1_1wechat__qrcode_1_1WeChatQRCode.html
blog in https://mp.weixin.qq.com/s/AknsKNqVmvr8aohV25_ZcQ

[johnthagen]

This has been released on PyPI: https://pypi.org/project/opencv-python/4.5.2.52/

[williamjacksn]

Is it possible to also upload a source distribution to PyPI?

[johnthagen]

It's true that in previous releases the sdist was included: https://pypi.org/project/opencv-python/4.5.1.48/#files

See #43

[williamjacksn]

I figured it out. The release workflow builds the sdist but doesn't upload it. The step that uploads the files to PyPI looks for files that match opencv_python-* but the built file is named opencv-python-4.5.2.52.tar.gz. Notice the hyphen instead of the underscore.

[skvark]

I think @sergregory or someone else can upload the source distributions manually to PyPI. The source tarballs should be available in the Github Actions artifact storage.