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QUESTION
Guido van Rossum tweeted:
Python tip: You can use multi-line strings as multi-line comments. Unless used as docstrings, they generate no code! :-)
Does the below multi-line string, when not used as a docstring, take some space in memory?
...ANSWER
Answered 2021-Mar-06 at 10:52It's straightforward to confirm that if you write a string by itself without assigning it to a variable or using it as part of another statement or expression, then that string (1) does not generate any CPython bytecode, and (2) does not appear in the code object's tuple of constants:
QUESTION
I want write function which return most frequent words, with specific requirements:
- show 8 most common words
- words must be longer than 4 signs
- eliminate stop_words
- skip dot and comma
I wrote short function but I don't have idea how connect requirements with my function:
- stop_words
- words must be longer than 4 signs
Example.
txt = '''Python was first released in 1991. It is an interpreted, high-level, general purpose programming language. It is Object-Oriented.
Designed by Guido van Rossum, Python actually has a design philosophy centered around code readability. The Python community will grade each other’s code based on how Pythonic the code is. Python’s libraries allow a programmer to get started quickly. Rarely will they need to start from scratch. If a programmer wishes to jump into machine learning, there’s a library for that. If they wish to create a pretty chart, there’s a library for that. If they wish to have a progress bar shown in their CLI, there’s a library for that.
Generally, Python is the Lego of the programming languages; find a box with instructions on how to use it and get to work. There is little that needs to be started from scratch.'''
stop_words = ["a", "to", "if", "it", "across", "after", "afterwards", "again", "against", "all", "almost", "alone"]
...ANSWER
Answered 2021-Feb-13 at 23:29One way would be to first create a new list of words, eliminating all those that don't match the two conditions, and then build the Counter
from that list.
By the way, your code ignores the requirement to skip dot and comma.
QUESTION
I have an XML file with an X number of annotations, and I would like to edit it to have less than X of these, randomly. For practical matters: I have 40 annotations and I would like to end up with only 7, having selected these randomly. Each of my files has a different original number of annotations but I want always to have seven in the end. Each annotation looks like this:
...ANSWER
Answered 2020-Dec-18 at 22:58Updating XML in BaseX can be done using XQuery update and this includes deleting nodes. XQuery update is best fitted to working on databases rather than files. However one can read a file, use transform with and then save the result
Regarding randomly selecting items: I suggest BaseX's random module
Putting these together and assuming the annotation elements are all at the same level
QUESTION
I have a data frame (although I don't think that the kind of source object I have matters) that has a list of 51 genes that I would like to get the pathway information for (using rWikiPathways, but, again, this can be applied to much more general issues too).
I would like to create an object with the information retrieved from rWikiPathways for each of these 51 genes.
I have been trying to use for loops, assign and paste functions but nothing is really working as I would like it to, so I ended up copying this line of code 51 times:
pathway.gene.1 <- findPathwaysByXref(genes$Encode.ID[1], "En")
pathway.gene.2 <- findPathwaysByXref(genes$Encode.ID[2], "En")
...
pathway.gene.51 <- findPathwaysByXref(genes$Encode.ID[51], "En")
Note that "...gene.1" and "Encode.ID[1]" all go from 1 to 51.
There has to be a way to do this automagically... I am a beginner and can't really make it happen.
Any tips out there?
Cheerio, Guido
...ANSWER
Answered 2020-Dec-17 at 16:53Maybe you need list2env
QUESTION
I installed the latest gvim from vim.org today. It is a 'loaded' package with many options, cfr infra (output of :version command)
I have python 2.7 installed, the python27.dll resides in c:\windows\system32. The python37.dll and pyhon39.dll are available in the 'c:\Program Files\python37' and 'c:\Program Files\python39' directories. These three directories with python dlls are on the system path.
Both Gvim and Vim output 0 on the echo has('python')
and echo has('python3')
commands.
Do I have to add anything in either .vimrc or .gvimrc to activate python?
Any suggestion and help would be highly appreciated!
Thanks in advance,
Guido
...ANSWER
Answered 2020-Dec-14 at 14:53The usual package of Vim on Windows ships a 32-bit binary, and a 32-bit binary will not work with 64-bit libraries (which is typically what I'd expect your Python installation will be.) You need both Vim and Python to match.
There are 64-bit versions of Vim packages available here: github.com/vim/vim-win32-installer/releases
They're explicitly mentioned for those who want to add support for external languages such as Python.
Once you have a 64-bit Vim binary that matches your Python libraries, you need to have it correctly find the libraries in your system.
Try setting the 'pythonthreedll'
and 'pythonthreehome'
variables to point to the ones in your system.
It seems Vim was built with python37.dll
, so let's try that version first:
QUESTION
Trying to convert a question-generation
t5 model to torchscript
model, while doing that Running into this error
ValueError: You have to specify either decoder_input_ids or decoder_inputs_embeds
here's the code that I ran on colab.
...ANSWER
Answered 2020-Dec-06 at 22:12I figured out what was causing the issue. Since the above model is sequential, it has both an encoder and a decoder. We need to pass the features into the encoder and labels (targets) into the decoder.
QUESTION
I'm reading a file that has this text:
...ANSWER
Answered 2020-Nov-04 at 10:26You could echo out your indexes through a loop. Or alternatively, just create a new array with couplets.
QUESTION
Do dict literals keep the order of their keys, in Python 3.7+? For example, is it guaranteed that {1: "one", 2: "two"}
will always have its keys ordered this way (1, then 2) when iterating over it? (There is a thread in the Python mailing list with a similar subject, but it goes in all directions and I couldn't find an answer.)
Similarly, is a dictionary like dict([('sape', 4139), ('guido', 4127), ('jack', 4098)])
ordered like in the list?
The same question is true for other naturally ordered constructions, like dict comprehension and dict(sape=4139, guido=4127, jack=4098)
.
PS: it is documented that dictionaries preserve insertion order. This question thus essentially asks: is it guaranteed that data is inserted in the order of a dict literal, of the list given to dict()
, etc.
ANSWER
Answered 2020-Sep-15 at 20:19Yes, any method of constructing a dict preserves insertion order, in Python 3.7+.
For dict literals, see Martijn's answer on How to keep keys/values in same order as declared?
For comprehensions, see the documentation.
When the comprehension is run, the resulting key and value elements are inserted in the new dictionary in the order they are produced.
Lastly, the dict
initializer works by iterating over its argument and keyword arguments, and inserting each in order, similar to this:
QUESTION
I'm following the excellent solution from Guido concerning date queries where a given date may not be present in the database https://stackoverflow.com/a/36378448/6591500.
I've got the solution working as is without any issues. I now need expand with this to include a WHERE clause. I have a 'date' column and a 'results' column, I need to count the number of 'passes' on each given day in the results column.
My SQL is this:
...ANSWER
Answered 2020-Jun-12 at 15:52In your query the first part does not return any rows, the result of this:
QUESTION
I was making an youtube converter with tkinter. I have started using it like 2 weeks ago and i get this error. But i dont know how to get it work. I tried looking on internet but I couldn't find a proper solution. Can anyone help me? The code I have:
...ANSWER
Answered 2020-Jun-22 at 19:50You need to change this line:
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