There are many ways to skip the first line. In addition to those said by Bakuriu, I would add: with open(filename, ‘r’) as f: next(f) for line in f: and: with open(filename,’r’) as f: lines = f.readlines()[1:]
PIL already has a function to do exactly that: from PIL import Image, ImageOps thumb = ImageOps.fit(image, size, Image.ANTIALIAS)
Unfortunately, some programs can take a long time to compile. A couple of hours of compilation is not strange for tensorflow on your setup. There are reports of it taking 50 minutes on a considerably faster machine A solution to this problem is to use pre-compiled binaries that are available with pip, instructions can be …
The asyncio documentation covers the differences: class asyncio.Future(*, loop=None) This class is almost compatible with concurrent.futures.Future. Differences: result() and exception() do not take a timeout argument and raise an exception when the future isn’t done yet. Callbacks registered with add_done_callback() are always called via the event loop’s call_soon_threadsafe(). This class is not compatible with the …
I recommend the approaches detailed here. It starts by explaining how to execute strings of Python code, then from there details how to set up a Python environment to interact with your C program, call Python functions from your C code, manipulate Python objects from your C code, etc. EDIT: If you really want to …
Life saver: as you’re writing your notebooks, incrementally refactor your code into functions, writing some minimal assert tests and docstrings. After that, refactoring from notebook to script is natural. Not only that, but it makes your life easier when writing long notebooks, even if you have no plans to turn them into anything else. Basic …
As already mentioned in the comments, if you use s.__contains__(“XYZ”) you get a result that is more similar to s.startswith(“XYZ”) because it needs to take the same route: Member lookup on the string object, followed by a function call. This is usually somewhat expensive (not enough that you should worry about of course). On the …
There’s a text progress bar library for python at http://pypi.python.org/pypi/progressbar/2.2 that you might find useful: This library provides a text mode progressbar. This is tipically used to display the progress of a long running operation, providing a visual clue that processing is underway. The ProgressBar class manages the progress, and the format of the line …
not is implemented through the __nonzero__ special method, which is required to return either True or False, so it can’t give the required result. Instead the ~ operator is used, which is implemented through the __not__ special method. For the same reason, & and | are used in place of and and or. PEP 335 …
As you have already found out, the difference between exists and isfile is the fact that the former returns True in case the given path is a directory or a file, while the latter only returns True if the path points to a file. Directories and files are quite similar from the technical point of …