python-3.5

How do I use type hints to annotate a function that returns an Iterable that always yields two values: a bool and a str ? The hint Tuple[bool, str] is close, except that it limits the return value type to a tuple, not a generator or other type of iterable. I'm mostly curious because I would like to annotate a function foo() that is used to return multiple values like this: always_a_bool, always_a_str = foo() Usually functions like foo() do something like return a, b (which returns a tuple), but I would like the type hint to be flexible enough to replace the returned tuple with a generator or

So I am trying to use: sift = cv2.xfeatures2d.SIFT_create() and it is coming up with this error: cv2.error: OpenCV(3.4.3) C:\projects\opencv-python\opencv_contrib\modules\xfeatures2d\src\sift.cpp:1207: error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in function 'cv::xfeatures2d::SIFT::create' I am using Python 3.5.0 and opencv(3.4.3) and I am just using idle. This occured after I tried to install TensorFlow and I have tried looking around and have installed

I was trying to remove unwanted characters from a given string using text.translate() in Python 3.4. The minimal code is: import sys s = 'abcde12345@#@$#%$' mapper = dict.fromkeys(i for i in range(sys.maxunicode) if chr(i) in '@#$') print(s.translate(mapper)) It works as expected. However the same program when executed in Python 3.4 and Python 3.5 gives a large difference. The code to calculate timings is python3 -m timeit -s "import sys;s = 'abcde12345@#@$#%$'*1000 ; mapper = dict.fromkeys(i for i in range(sys.maxunicode) if chr(i) in '@#$'); " "s.translate(mapper)" The Python 3.4 program

On Ubuntu 16.04 with virtualenv 15.0.1 and Python 3.5.2 (both installed with apt ) when I create and activate new Python virtual environment with virtualenv .virtualenvs/wtf -p $(which python3) --no-site-packages source .virtualenvs/wtf/bin/activate I get the following output: Already using interpreter /usr/bin/python3 Using base prefix '/usr' New python executable in /home/das-g/.virtualenvs/wtf/bin/python3 Also creating executable in /home/das-g/.virtualenvs/wtf/bin/python Installing setuptools, pkg_resources, pip, wheel...done. Indeed pip freeze --all lists these 4 packages: pip==8.1.2 pkg

I am using Visual Studio 2015, Python 3.5.2, Windows 10, and have recently upgraded pip to 9.0.1. I am trying to install Tensorflow 0.12 on my system. I tried to use VS's built in "Install Python Package" function, as well as command prompting pip install python Both ways I get the same error: Installing 'tensorflow' Collecting tensorflow Could not find a version that satisfies the requirement tensorflow (from versions: ) No matching distribution found for tensorflow 'tensorflow' failed to install. Exit code: 1` I don't know what to do from here. Supposedly the pip command was all I had to do

Tensorflow is now available on Windows: https://developers.googleblog.com/2016/11/tensorflow-0-12-adds-support-for-windows.html I used pip install tensorflow. I try running the intro code: https://www.tensorflow.org/versions/r0.12/get_started/index.html I get this error: C:\Python\Python35-32\python.exe "C:/tensorflow_tutorial.py" Traceback (most recent call last): File "C:\Python\Python35-32\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 18, in swig_import_helper return importlib.import_module(mname) File "C:\Python\Python35-32\lib\importlib\__init__.py", line 126, in import