What does .view() do to a tensor x? What do negative values mean? Answer view() reshapes the tensor without copying memory, similar to numpy’s reshape(). Given a tensor a with 16 elements: To reshape this tensor to make it a 4 x 4 tensor, use: Now a will be a 4 x 4 tensor. Note that after the reshape th…
Tag: python
ModuleNotFoundError: No module named ‘forms’
New to django, I am trying to understand this error. The forms is in the folder of the project. My forms.py is importing from django forms. My views.py is importing LoginForm I don’t know why I am getting this error? Thanks Answer It sounds like it should be working, you might want to post the full erro…
Replacing ‘x..’ litteral string in Python
I have directories that contains ‘x..’ characters such as ‘x00’ : and I want to rename them without these, since when I copy those files to windows they become unusable. So my python script is going through those directories and detecting the problematic characters the following way: F…
How to load multiple text files from a folder into a python list variable
I have a folder full of text documents, the text of which needs to be loaded into a single list variable. Each index of the list, should be the full text of each document. So far I have this code, but it is not working as well. Is there a better way to do this? Edit: Replaced the csv reading
Create a Full Text Search index with SQLAlchemy on PostgreSQL
I need to create a PostgreSQL Full Text Search index in Python with SQLAlchemy. Here’s what I want in SQL: Now how do I do the second part with SQLAlchemy when using the ORM: Answer You could create index using Index in __table_args__. Also I use a function to create ts_vector to make it more tidy and r…
How can I get multiple lists as separate results from a list comprehension?
Suppose I have this code: How can I neatly get a result like this? Answer Note that return 2*x,x is short for return (2*x,x), i.e. a tuple. Your list comprehension thus generates a list of tuples, not a tuple of lists. The nice thing of zip however is that you can easily use it in reverse with the asterisk: N…
How to save a new sheet in an existing excel file, using Pandas?
I want to use excel files to store data elaborated with python. My problem is that I can’t add sheets to an existing excel file. Here I suggest a sample code to work with in order to reach this issue This code saves two DataFrames to two sheets, named “x1” and “x2” respectively. …
Python 3.6 install win32api?
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. Is there a way to install the win32api module for python 3.6 or do I have to change my version of python? Everytime I try to install it using pip I get t…
What is the most pythonic way to check if multiple variables are not None?
If I have a construct like this: What is the preferred syntax in python to check if all variables are set to useful values? Is it as I have written, or another better way? This is different from this question: not None test in Python … I am looking for the preferred method for checking if many condition…
Error UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xff in position 0: invalid start byte
https://github.com/affinelayer/pix2pix-tensorflow/tree/master/tools An error occurred when compiling “process.py” on the above site. Traceback (most recent call last): What is the cause of the error? Python’s version is 3.5.2. Answer Python tries to convert a byte-array (a bytes which it ass…