First, array_length should be an integer and not a string: Second, your for loop should be constructed using range: Third, i will increment automatically, so delete the following line: Note, one could also just zip the two lists given that they have the same length:
The w flag means “open for writing and truncate the file”; you’d probably want to open the file with the a flag which means “open the file for appending”. Also, it seems that you’re using Python 2. You shouldn’t be using the b flag, except in case when you’re writing binary as opposed to plain text content. In Python 3 your … Read more
Your path only lists Visual Studio 11 and 12, it wants 14, which is Visual Studio 2015. If you install that, and remember to tick the box for Languages->C++ then it should work. On my Python 3.5 install, the error message was a little more useful, and included the URL to get it from Edit: New working link Edit: … Read more
Python does not have such a mechanism. Prepend a # to each line to block comment. For more information see PEP 8. Most Python IDEs support a mechanism to do the block-commenting-with-pound-signs automatically for you. For example, in IDLE on my machine, it’s Alt+3 and Alt+4. Don’t use triple-quotes; as you discovered, this is for documentation strings not block comments, although it … Read more
pip is just a PyPI package like any other; you could use it to upgrade itself the same way you would upgrade any package: On Windows the recommended command is:
I am not sure what you are trying to do. You can implement a do-while loop like this: Or: What are you doing trying to use a do while loop to print the stuff in the list? Why not just use: Update: So do you have a list of lines? And you want to keep … Read more
Python allows putting multiple open() statements in a single with. You comma-separate them. Your code would then be: And no, you don’t gain anything by putting an explicit return at the end of your function. You can use return to exit early, but you had it at the end, and the function will exit without it. (Of course with functions that return … Read more
1170 pip is just a PyPI package like any other; you could use it to upgrade itself the same way you would upgrade any package: On Windows the recommended command is:
Perhaps the error message is somewhat misleading, but the gist is that X_train is a list, not a numpy array. You cannot use array indexing on it. Make it an array first:
It’s pretty simple really: There is also the step value, which can be used with any of the above: The key point to remember is that the :stop value represents the first value that is not in the selected slice. So, the difference between stop and start is the number of elements selected (if step is 1, the default). The other feature is that start or stop may be a negative number, which … Read more