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Cv2 videowriter python

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2020. 5. 17. · いろいろな動画形式の作成方法. cv2.VideoWriter_fourcc に渡す引数で、動画の形式を変更可能です。 OSなどの環境やバージョンにより使えるものが変わってきます。 *‘mp4v’ : mp4 向け (拡張子.mp4).

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2020. 3. 4. · pip install opencv-contrib-python. Install Openh264 using following command. conda install openh264. av for ffmpeg using following command. pip install av. use WSL in win10; the operation of git/pip/conda/anaconda on Linux / Windows platform is consistent, so what you need to pay attention to is how to set environment variables and install the.

Like read an image, write an image, convert colored to gray, binary, HSV etc. Installation of CV2:- Open the command prompt. Run the following command. pip install opencv-python Successfully install opencv on your system You can use CV2 by just importing it in your python script. syntax:- import cv2 This is how we can install and use CV2 in python.

1 day ago · Can't use cv2.VideoWriter with a timer. The program should record a 720p video when it detects motion (20fps, 30sec long), and then save it while still showing what the camera currently sees on the screen. cv2.VideoWriter works properly when I copy code from the opencv website (bottom of the page), I really don't know where's the issue.

Next we are going to retrieve and display the video frames using cv2. cv2.waitKey() is a keyboard binding function. for f in get_frames(Video_FILE): if f is None: break cv2.imshow('frame',f) if cv2.waitKey(10) == 40: break cv2.destroyAllWindows() Once done, we will define a function to get a single video frame. OpenCV Python Video playback - How to set the right delay for cv2.waitKey () From the OpenCV documentation: The function cv.waitKey ( [, delay]) waits for a key event infinitely (when delay <= 0) or for delay milliseconds, when it is positive. If the FPS is equal to 20, then you should wait 0,05 seconds between displaying the consecutive frames.

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Python cv2 module uses the numpy library to manipulate the images. Here is one thing to note that I am assuming that you are working with BGR images. Python cv2 Image Size. To get the proper size of an image, use numpy.shape property. In OpenCV, we can get the image size (width, height) as a tuple with the attribute shape of ndarray. Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier. opencv, gstreamer. Sefa_H February 7, 2021, 3:59am #1. Trying to stream a video through gstreamer with a python code: My python code is: import cv2. import numpy as np. cap = cv2.VideoCapture (0) cap.set (cv2.CAP_PROP_FRAME_WIDTH, 640). image = ImageGrab.grab (): Takes a screenshot of the entire screen. If you wish to record only a certain part of the screen or an app, use the parameter bbox (). It takes the parameters left, top, right and bottom (clockwise from left to remember). img_np_arr = np.array (image): Convert the image to numpy arrays.

fourcc = cv2.VideoWriter_fourcc('m','p','4','v')# note the lower case Please note that you need to write the codec in lowercase Also, the frame width and frame height can be referenced to the.

Next, we cay cap = cv2.VideoCapture(0). This will return video from the first webcam on your computer. This will return video from the first webcam on your computer. If you are watching the tutorial videos, you will see I am using 1, since my first webcam is recording me, and the second webcam is used for the actual tutorial feed.

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To get a smaller size, we need to install X264, which is not in the codec list by default. Change codec to X264: fourcc = cv2.VideoWriter_fourcc(*'X264') Once you run the app, an annoying log window will pop up: I have found the solution here. Open Windows registry and set log_level value 0.

Python cv2 module uses the numpy library to manipulate the images. Here is one thing to note that I am assuming that you are working with BGR images. Python cv2 Image Size. To get the proper size of an image, use numpy.shape property. In OpenCV, we can get the image size (width, height) as a tuple with the attribute shape of ndarray.

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in the cmd(See here). pywin32 will install win32gui, win32api, and win32con.; For installing winGuiAuto, download winGuiAuto.py from here.Save this as winGuiAuto.py in the python -> lib -> site-packages. Steps: Create the window that you want to record (I used cv2.imshow() for that) Give the window name that you want to record in winGuiAuto.findTopWindow(). 本篇介紹如何用 Python 搭配 OpenCV 模組的 cv2.VideoCapture 將來源的影像(攝影機或串流影片),儲存寫入video影片到檔案裡。 使用範例如果遇到 ImportError: No module named 'cv2' 這個錯誤訊息的話,請安裝 python 的 OpenCV 模組,參考這篇安裝吧!。 先前的文章我們學習了如何讀取播放影片,那這篇.

Stream and save video in Python with OpenCV. GitHub Gist: instantly share code, notes, and snippets. Skip to content. All gists Back to GitHub Sign in Sign up Sign ... ('XVID') " or " fourcc=cv2.VideoWriter_fourcc('X264') " at line 27. In the newer versions of OpenCV, the correct way to use is cv2.xyz rather than cv2.cv.xyz. Sorry. Python. import numpy as np import cv2 # Load a video from file capture = cv2.VideoCapture(1) while True: # capture frame-by-frame from video file ret, frame = capture.read() # show the frame on the screen cv2.imshow("frame", frame) if cv2.waitKey(27) & 0xFF == ord('q'): break # When everything done, release the capture capture.release() cv2.

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cv2 .VideoCapture 标签: python opencv 计算机视觉. ... As the title states, when i run the cv2.videowriter function i get 'module' object has no attribute cv_fourcc. If the fps is equal to 20, then you should wait 0,05. Nov 15, 2018 · Steps: Load a video using cv2.VideoCapture Create a VideoWriter object using cv2.

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2021. 6. 19. · Photo by Waldemar Brandt on Unsplash. OpenCV has several nuances and silent fails that makes recording videos from cameras difficult and frustrating. Here’s how to record from a camera: import cv2 cap = cv2.VideoCapture (0) fourcc = cv2.VideoWriter_fourcc (*'XVID') w = int (cap.get (cv2.CAP_PROP_FRAME_WIDTH)).

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I`m trying to make image to video, and I use cv2.VideoWriter. I have succeeded in creating the video, but I want the image name to appear at the top of the video. import cv2 import lumpy as np img_array = [] for visible, lwir, both in zip (tqdm (sorted_visible), sorted_lwir, sorted_both): left_img = cv2.imread (visible_path + visible) mid_img.

python opencv写视频——cv2.VideoWriter()函数原型 cv2.VideoWriter()VideoWriter(filename, fourcc, fps, frameSize[, isColor]) -> <VideoWriter object>参数说明:第一个参数是要保存的文件的路径fourcc 指定编码器fps 要保存的视频的帧率frameSize 要保存的文件的画面尺寸isColor 指示是黑白画面还是彩色的画面示例代码1impo. Use uvcdynctrl -f to find out which resolutions are supported: set-cv2-videocapture-image-size.sh 📋 Copy to clipboard ⇓ Download. $ uvcdynctrl -f. Listing available frame formats for device video0: Pixel format: YUYV (YUYV 4:2:2; MIME type: video/x-raw-yuv) Frame size: 640x480. Frame rates: 30, 20, 10. cv2.bilateralFilter (img, d, sigma_colour, sigma_space) Let's go through the parameters one by one -. img - The image that is loaded. d - Diameter of the pixel neighborhood to consider while blurring. Since, this filter is slower than other filters, it is recommended to keep d = 5 for real-time applications. sigma_colour - This is the value of.

Using OpenCV with RasPiCam and python. 5. Resolution properties for python's OpenCV and uv4l camera driver. 2. can't save video with opencv 3.1 windows. 1. Streaming video from ip webcam via opencv and python on raspberry. 0. Save TTL pulse input time while recording video from Raspicam. In the next step, we will be creating a videoWriter object. The video writer method of cv2 module needs 4 mandatory arguments.. First is the filename, second being the codec, third being the FPS (Frame per second) and the last being the video (or Screen) resolution.. For a better screen recording, 60 FPS is a good frame rate. You can experiment around the FPS value to get the optimum results.

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本文整理汇总了Python中cv2.VideoWriter方法的典型用法代码示例。如果您正苦于以下问题:Python cv2.VideoWriter方法的具体用法?Python cv2.VideoWriter怎么用?Python cv2.VideoWriter使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。. 2022. 3. 19. · To capture a video in Python, use the cv2 VideoCapture class and then create an object of VideoCapture. VideoCapture has the device index or the name of a video file. The device index is just an integer to define a Camera. If we pass 0, it is for the first or primary camera, 1 for the second camera, etc. Then, we capture the video frame by frame.

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In order to build opencv-python in an unoptimized debug build, you need to side-step the normal process a bit. Install the packages scikit-build and numpy via pip. Run the command python setup.py bdist_wheel --build-type=Debug. Install the generated wheel file in the dist/ folder with pip install dist/wheelname.whl.

The OpenCV provides cv2.VideoWriter_fourcc() method to initialize the fourcc codec. The XVID format is more preferable. video_cod = cv2.VideoWriter_fourcc(*'XVID') Video Writer. Next, we ... opencv -python is already installed on this image, if you re-install opencv. 2016. 7. 29. · Initialize numpy array (cv2 python) and PerspectiveTransform. Area of a single pixel object in OpenCV. Weird result while finding angle. cv2.perspectiveTransform() with Python. What's the best way to segment different coloured blobs? Python findFundamentalMat. videofacerec.py example help. Python correctMatches. Getting single frames from video. VideoCapture::grab¶. Grabs the next frame from video file or capturing device. C++: bool VideoCapture::grab()¶ Python: cv2.VideoCapture.grab() → successFlag¶ C: int cvGrabFrame(CvCapture* capture)¶ Python: cv.GrabFrame(capture) → int¶ The methods/functions grab the next frame from video file or camera and return true (non-zero) in the case of success.

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2019. 4. 8. · Using PIL library we are opening images and resizing them to their mean_height and mean_width because the video which will be created using cv2 library required the input images of same height and width. Resized images are included in an array and frame of video is set with the mean_height and mean_width. Then by looping, we are appending each. Execute the watermark_dataset.py script again, this time supplying the --correct 0 flag to skip the bitwise AND step: $ python watermark_dataset.py --correct 0 --watermark pyimagesearch_watermark.png \ --input input --output output. Then, opening an output image of your choosing, you'll see something like this:. In order to encode the video in Python, a four characters string is used to define the coding method. I tried to set the code to ‘MP4V’, as suggested by online references fourcc = cv2.VideoWriter_fourcc(*'MP4V') voObj = cv2.VideoWriter('output.mp4',fourcc, 15.0, (1280,360)) But it’s not working. 2021. 6. 19. · Photo by Waldemar Brandt on Unsplash. OpenCV has several nuances and silent fails that makes recording videos from cameras difficult and frustrating. Here’s how to record from a camera: import cv2 cap = cv2.VideoCapture (0) fourcc = cv2.VideoWriter_fourcc (*'XVID') w = int (cap.get (cv2.CAP_PROP_FRAME_WIDTH)).

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Object Detection with Yolo Python and OpenCV- Yolo 2. we will see how to setup object detection with Yolo and Python on images and video. We will also use Pydarknet a wrapper for Darknet in this blog. The impact of different configurations GPU on speed and accuracy will also be analysed. This blog is part of series, where we examine practical. This has been tested in c# (emgucv) and python (opencv-python). Here is a python example. In other languages, setting the same properties will get you 16-bit raw. The main difference between windows and linux is that you need to force the DirectShow backend under windows. Prerequisite (from terminal/command prompt) pip install opencv-python.

2017. 6. 5. · We just need to use cv2.imwrite(). But for videos, we need to toil a bit harder. We need to create a VideoWriter object. First, we should specify the output file name with its format (eg: output.avi). Then, we should specify the FourCC code and the number of frames per second (FPS). Lastly, the frame size should be passed. Python.

fourcc = cv2 . VideoWriter _fourcc(*’avc1′) cv2 . VideoWriter (“output_video.mp4”,fourcc, 29.41, (1920, 1200),True) I was hoping a format like X264 would give me a dramatic decrease in size, but I can’t figure out how to get X264 and H264 ... 区别好像是因为一个opencv 2.x的python api,一个. We can use cv2.VideoCapture() for using any camera source and retrieve video or can directly provide a path to the video source and store it in a variable.; In this example, we are storing the captured video in the "capture" variable Using capture.read(), we can capture the video.read() function returns whether any frame is present as boolean value and the frame.

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Zoran Duric (GMU) Computer Vision with OpenCV and Python 2/ 8 2 / 8. OpenCV Resources Reading and Writing Images Read an Image Use the function cv2.imread() to read an image. First argument is the image name. The image should be in the working directory or a full path ... # out = cv2.VideoWriter('output.avi',cv2.cv.CV FOURCC('I','Y.

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To execute our OpenCV video writer using a builtin/USB webcam, use the following command: $ python write_to_video.py --output example.avi If you instead want to use the Raspberry Pi camera module, use this command: $ python write_to_video.py --output example.avi --picamera 1 In either case, your output should look similar to my screenshot below:. Cv2 videowriter audio transportation after bbl surgery. new builds monifieth. do master crossword clue. ... leeds road japan borders open docker portainer raspberry pi 1950 chevy deluxe 4 door for sale sell comics online stereosgbm python. 2013. 1. 8. · You will learn these functions : cv.VideoCapture(), cv.VideoWriter() Capture Video from Camera . Often, we have to capture live stream with a camera. OpenCV provides a very simple interface to do this. Let's capture a video from the camera (I am using the built-in webcam on my laptop), convert it into grayscale video and display it.

2021. 10. 17. · output = cv2.VideoWriter(“path”,cv2.VideoWriter_fourcc(*’MPEG’),30, ... Python - Displaying real time FPS at which webcam/video file is processed using OpenCV. 30, Aug 20. Get video duration using Python - OpenCV. 01, Dec 20. How to draw Filled rectangle to every frame of video by using Python-OpenCV?.

. cv2 .VideoCapture 标签: python opencv 计算机视觉. ... As the title states, when i run the cv2.videowriter function i get 'module' object has no attribute cv_fourcc. If the fps is equal to 20, then you should wait 0,05. Nov 15, 2018 · Steps: Load a video using cv2.VideoCapture Create a VideoWriter object using cv2. Bug in created video with cv2.VideoWriter (Python 2.7) Issues with using VideoWriter on opencv python. Saving video from webam stream - no file created. Having problem is creating video from image arrays. OpenCV2.4 VideoWriter Create single frame video out of image file. CvVideoWriter get current fourcc. How can i set a automatic video recorder.

Hi! aarmea, Thank you so much for your script! That really helps me out. I have questions about your codes. I checked out that I get a number of images taken from the two (left/right) cameras by running 1-capture.py. 2018. 11. 15. · Save the frames to a video file using cv2.VideoWriter() Release the VideoWriter and destroy all windows; ... 3 thoughts on “ Changing Video Resolution using OpenCV-Python ” k.subrahmanyam 23 Sep 2019 at 6:09 pm. the code was really cool dude but i need the code in minimum lines ,if it is possible pls do post the answer.

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Nov 30, 2018 · Bug in created video with cv2.VideoWriter (Python 2.7) Issues with using VideoWriter on opencv python. Saving video from webam stream - no file created. Having problem is creating video from image arrays. Problems with the video writer in OpenCV-3.0.0. OpenCV2.4 VideoWriter Create single frame video out of image file. el rancho western wear. Mar 19, 2022 · To capture a video in Python, use the cv2 VideoCapture class and then create an object of VideoCapture. VideoCapture has the device index or the name of a video file. The device index is just an integer to define a Camera. If we pass 0, it is for the first or primary camera, 1 for the second camera, etc.

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It may be problem in GStreamer and not in cv2, but I don't know. Are you able to create VideoWriter using THEO? Anyway, VP8, as it seems, works. 2020. 9. 27. · cv2.VideoWriter 클래스를 이용해서 영상을 저장하는 방법을 알아보겠습니다. OpenCV에서는 cv2.VideoWriter 클래스를 이용하여 일련의 프레임을 동영상 파일로 저장할 수 있습니다. 일련의 프레임은 모두 크기와 데이터 타입이 같아야 합니다. 또한 Fourcc (4-문자 코드, four.

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I`m trying to make image to video, and I use cv2.VideoWriter. I have succeeded in creating the video, but I want the image name to appear at the top of the video. import cv2 import lumpy as np img_array = [] for visible, lwir, both in zip (tqdm (sorted_visible), sorted_lwir, sorted_both): left_img = cv2.imread (visible_path + visible) mid_img. Download ZIP. opencv and python: concatenate video. Raw. gistfile1.txt. import numpy as np. import cv2. import os. # this two lines are for loading the videos. level 6 state meet 2022 georgia. Jan 08, 2013 · General Information. The OpenCV Video I/O module is a set of classes and functions to read and write video or images sequence. Basically, the module provides the cv::VideoCapture and cv::VideoWriter classes as 2-layer interface to many video I/O APIs used as backend.. Sep 10, 2020 · Method 1: Installation of OpenCV using.

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本文整理匯總了Pythoncv2.VideoWriter_fourcc方法的典型用法代碼示例。如果您正苦於以下問題:Python cv2 .VideoWriter_fourcc. I`m trying to make image to video, and I use cv2.VideoWriter. I have succeeded in creating the video, but I want the image name to appear at the top of the video. import cv2 import lumpy as np img_array = [] for visible, lwir, both in zip (tqdm (sorted_visible), sorted_lwir, sorted_both): left_img = cv2.imread (visible_path + visible) mid_img.

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OpenCV为cv2.VideoWriter类提供了构造函数,用它来实现初始化工作。. 该函数的完整定义如下:. filename:需要输出保存的视频文件名。. 如果文件名存在,覆盖原文件。. fourcc:视频的编码类型。. 在OpenCV中,cv2.VideoWriter_fourcc ()函数用来指定视频的编码格式。. 该函数. import numpy as np import cv2 import time def videoaufzeichnung (video_wdth, video_hight, video_fps, seconds): cap = cv2.videocapture (6) cap.set (3, video_wdth) # wdth cap.set (4, video_hight) #hight cap.set (5, video_fps) #hight # define the codec and create videowriter object fps = cap.get (5) fourcc = cv2.videowriter_fourcc (*'xvid'). opencv python VideoCapture VideoWriter. 3. 비디오 입력 출력. 3.1 VideoCapture. opencv 에서 동영상 입력 부분을 관리하는 함수 입니다 . 모든 디바이스의 입출력은 파일 처리와 비슷하기 때문에 파일 처리를 해보았다면 사용되는 method 등이 좀 다를 뿐 작업 방식도 비슷합니다.

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cv2 .imwrite("경로 및 제목", 이미지)를 이용하여 해당 이미지를 저장합니다. Ctrl + X를 눌렀을 경우, 녹화를 시작합니다. video에 녹화할 파일 형식을 설정합니다. cv2.VideoWriter ("경로 및 제목", 비디오 포맷 코드, FPS, (녹화 파일 너비, 녹화 파일 높이))를 의미합니다. Camera로부터 영상을 읽어, 화면에 보옂기 위해서 아래와 같은 순서로 진행을 합니다. VideoCapture Object를 생성합니다. 변수로는 camera device index나 동영상 파일명을 넘겨줍니다. 일반적으로 0 이면 Camera와 연결이 됩니다. Loop를 돌면서 frame을 읽어 들입니다. 읽은 frame. Additional notes: - Using Python - I had to set cv2.CAP_PROP_FPS to 150 to get the VideoWriter to write at 120. When I set it at 120 the file would not write. - I'm writing grayscale images and doing the conversion to gray in my main while loop. - I'm using a multithreaded approach. 1 day ago · Can't use cv2.VideoWriter with a timer. The program should record a 720p video when it detects motion (20fps, 30sec long), and then save it while still showing what the camera currently sees on the screen. cv2.VideoWriter works properly when I copy code from the opencv website (bottom of the page), I really don't know where's the issue.

OpenCV Python으로 이미지/비디오 읽기! ... 키워드 : cv2 .imread (), cv2 .imshow (), cv2 .imwrite (), cv2 .VideoCapture (), cv2.VideoWriter () 이미지 읽기 (Image Read) import cv2 import numpy as np img = cv2 .imread ('test.jpg', cv2 . tumble block in cheer; qantas club membership discount 2022; snape saves harry from. The documentation in OpenCV says (hidden away) that you can only write to avi using OpenCV3. Whether that's true or not I've not been able to determine, but I've been unable to write to anything else. However, OpenCV is mainly a computer vision library, not a. import numpy as np import cv2 import time def videoaufzeichnung (video_wdth, video_hight, video_fps, seconds): cap = cv2.videocapture (6) cap.set (3, video_wdth) # wdth cap.set (4, video_hight) #hight cap.set (5, video_fps) #hight # define the codec and create videowriter object fps = cap.get (5) fourcc = cv2.videowriter_fourcc (*'xvid').

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本文整理匯總了Pythoncv2.VideoWriter_fourcc方法的典型用法代碼示例。如果您正苦於以下問題:Python cv2 .VideoWriter_fourcc.

Conclusion. Python cv2.imwrite () method saves an image in the local filesystem. The imwrite () function saves an image to the specified file. The image format is chosen based on a filename extension (see imread () for a list of extensions). Only 8-bit (or 16-bit unsigned (CV_16U) in case of PNG, JPEG 2000, and TIFF) single-channel or 3-channel.

My code is this: cap = cv2.VideoCapture('C:\\inputVideo.mp4') wrt = cv2.VideoWriter('C:\\outputVideo.avi',cv2.cv.CV_FOURCC('X','V','I','D'),\ 2, (300,530)) while cap.get(1)<5: #catching only the first 5 frames of the video flag, img = cap.read() #I didn't put here the math transformations, #because the problem occurs also without the math part. My code is this: cap = cv2.VideoCapture('C:\\inputVideo.mp4') wrt = cv2.VideoWriter('C:\\outputVideo.avi',cv2.cv.CV_FOURCC('X','V','I','D'),\ 2, (300,530)) while cap.get(1)<5: #catching only the first 5 frames of the video flag, img = cap.read() #I didn't put here the math transformations, #because the problem occurs also without the math part.

cv2 .imwrite("경로 및 제목", 이미지)를 이용하여 해당 이미지를 저장합니다. Ctrl + X를 눌렀을 경우, 녹화를 시작합니다. video에 녹화할 파일 형식을 설정합니다. cv2.VideoWriter ("경로 및 제목", 비디오 포맷 코드, FPS, (녹화 파일 너비, 녹화 파일 높이))를 의미합니다.

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fourcc = cv2 . VideoWriter _fourcc(*’avc1′) cv2 . VideoWriter (“output_video.mp4”,fourcc, 29.41, (1920, 1200),True) I was hoping a format like X264 would give me a dramatic decrease in size, but I can’t figure out how to get X264 and H264 ... 区别好像是因为一个opencv 2.x的python api,一个.

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