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
As already pointed out in a comment: the site has a bad SSL implementation as can be seen from the SSLLabs report. The main part of this report regarding your problem is: This server’s certificate chain is incomplete. Grade capped to B. This means that the server is not sending the full certificate chain as is … Read more
@bogatron has it right, you can use where, it’s worth noting that you can do this natively in pandas: Note: this changes the dtype of all columns to object. Example: Note: what you cannot do recast the DataFrames dtype to allow all datatypes types, using astype, and then the DataFrame fillna method: Unfortunately neither this, nor using replace, works with None see this (closed) issue. As an aside, … Read more
Nope, BeautifulSoup, by itself, does not support XPath expressions. An alternative library, lxml, does support XPath 1.0. It has a BeautifulSoup compatible mode where it’ll try and parse broken HTML the way Soup does. However, the default lxml HTML parser does just as good a job of parsing broken HTML, and I believe is faster. … Read more