You just need to have the full expression inside the $. Basically, you need “meters $10^1$”. You don’t need usetex=True to do this (or most any mathematical formula). You may also want to use a raw string (e.g. r”\t”, vs “\t”) to avoid problems with things like \n, \a, \b, \t, \f, etc. For example: … Read more
os.listdir() will be slightly more efficient than using glob.glob. To test if a filename is an ordinary file (and not a directory or other entity), use os.path.isfile():
All you have to do to combine them is Sets are unordered sequences of unique values. a | b or a.union(b) is the union of the two sets (a new set with all values found in either set). This is a class of operation called a “set operation”, which Python sets provide convenient tools for.
In Python 3, range returns a lazy sequence object – it does not return a list. There is no way to rearrange elements in a range object, so it cannot be shuffled. Convert it to a list before shuffling.
It means there’s another service’s using that port (8080 in this case). Maybe because you forgot close another running Flask app and it’s using 8080 port. However, you could change the port you’re using, for example change it to 4444 like this: But anyways, I think you’d like to know which program is using that … Read more
At least for the ActiveState Python distribution, and in the official Python distribution: The dll is in where NN is the version number. On a 64-bit, a 32 bit dll will be installed here: and a running 32 bit application will magically translate this to the proper path, http://en.wikipedia.org/wiki/WoW64 When I link againsy Python27, I … Read more
import nltk is Python syntax, and as such won’t work in a shell script. To test the version of nltk and scikit_learn, you can write a Python script and run it. Such a script may look like Note that not all Python packages are guaranteed to have a __version__ attribute, so for some others it … Read more
How can I perform a conversion of a binary string to the corresponding hex value in Python? I have 0000 0100 1000 1101 and I want to get 048D I’m using Python 2.6.
You can use the os module. But if it’s about finding other modules: You can set an environment variable called PYTHONPATH, under Linux would be like Then, the interpreter searches also at this place for imported modules. I guess the name would be the same under Windows, but don’t know how to change. edit Under … Read more
Every canvas item is an object that Tkinter keeps track of. If you are clearing the screen by just drawing a black rectangle, then you effectively have created a memory leak — eventually your program will crash due to the millions of items that have been drawn. To clear a canvas, use the delete method. … Read more