Cannot find module cv2 when using OpenCV : First do run these commands inside Terminal/CMD: Then the issue for the instruction below will be resolved For windows if you have anaconda installed, you can simply do or if you are on linux you can do : or Link1 Link2 For python3.5+ check these links : Link3 , Link4 Update:if … Read more
gitignore not working : The files/folder in your version control will not just delete themselves just because you added them to the .gitignore. They are already in the repository and you have to remove them. You can just do that with this: Remember to commit everything you’ve changed before you do this! This removes all files … Read more
“Error occurred during initialization of VM; Could not reserve enough space for object heap” using -Xmx3G : It looks like the machine you’re trying to run this on has only 256 MB memory. Maybe the JVM tries to allocate a large, contiguous block of 64 MB memory. The 192 MB that you have free might … Read more
object reference not set to an instance of an object : ariables in .NET are either reference types or value types. Value types are primitives such as integers and booleans or structures (and can be identified because they inherit from System.ValueType). Boolean variables, when declared, have a default value: Reference types, when declared, do not have a default value: If … Read more
Error: ‘int’ object is not subscriptable – Python : When you type x = 0 that is creating a new int variable (name) and assigning a zero to it. When you type x[age1] that is trying to access the age1‘th entry, as if x were an array. The problem is in the line, What you want is You also need to convert the int … Read more
ValueError: setting an array element with a sequence : From the code you showed us, the only thing we can tell is that you are trying to create an array from a list that isn’t shaped like a multi-dimensional array. For example or will yield this error message, because the shape of the input list … Read more
Remove secure warnings (_CRT_SECURE_NO_WARNINGS) from projects by default in Visual Studio : Mark all the desired projects in solution explorer. Press Alt-F7 or right click in solution explorer and select “Properties” Configurations: All Configurations Click on the Preprocessor Definitions line to invoke its editor Choose Edit Copy _CRT_SECURE_NO_WARNINGS into the Preprocessor Definitions white box on the top 119 It … Read more
How to cancel all alarms set in AlarmManager? : I am aware that this will not help everyone, but maybe it could help some people that could be in a similar situation.Seems that AlarmManager does not have a cancelAll() method or something, and it can be a trouble some of us.After searching some info about the AlarmManager, … Read more
TypeError: unhashable type: ‘dict’: You’re trying to use a dict as a key to another dict or in a set. That does not work because the keys have to be hashable. As a general rule, only immutable objects (strings, integers, floats, frozensets, tuples of immutables) are hashable (though exceptions are possible). So this does not work: To use a dict … Read more
ImportError: No module named matplotlib.pyplot : pip will make your life easy! Step 1: Install pip – Check if you have pip already simply by writing pip in the python console. If you don’t have pip, get a python script called get-pip.py , via here: https://pip.pypa.io/en/latest/installing.html or directly here: https://bootstrap.pypa.io/get-pip.py (You may have to use Save As ..) Step 2: … Read more