There are, in fact, multiple things you need to know about indentation in Python: Python really cares about indention. In other languages, indention is not necessary but only serves to improve the readability. In Python, indentation is necessary and replaces the keywords begin / end or { } of other languages. This is verified before the execution of the … Read more
Just import it or, better Just be careful to put both scripts on the same directory (or make a python package, a subdir with __init__.py file; or put the path to script.py on the PYTHONPATH; but these are “advanced options”, just put it on the same directory and it’ll be fine).
Summary The following tests are meant to give some insights into the different approaches and should be taken with a grain of salt. What is being tested here is not exactly generic filtering, but rather just applying a threshold, which has the notable feature that computing the condition is pretty fast. Very different results would … Read more
Looks like you’re a little bit confused about all that stuff. operator is a built-in module providing a set of convenient operators. In two words operator.itemgetter(n) constructs a callable that assumes an iterable object (e.g. list, tuple, set) as input, and fetches the n-th element out of it. So, you can’t use key=a[x][1] there, because python has no idea what x is. … Read more
It seems the task you are trying to solve is regression: predicting the price. However, you are training a classification model, that assigns a class to every input. ROC-AUC score is meant for classification problems where the output is the probability of the input belonging to a class. If you do a multi-class classification, then … Read more
Using these magic methods (__enter__, __exit__) allows you to implement objects which can be used easily with the with statement. The idea is that it makes it easy to build code which needs some ‘cleandown’ code executed (think of it as a try-finally block). Some more explanation here. A useful example could be a database connection object (which then automagically closes … Read more
In regards to your error and what’s missing in your code. m is a name which is not defined for getmd5() function. No offence, I know you are a beginner, but your code is all over the place. Let’s look at your issues one by one 🙂 First, you are not using hashlib.md5.hexdigest() method correctly. Please refer explanation on hashlib functions … Read more
Unfortunately it is at the moment not possible to color text of a Slack message with the API. You can use different styles, e.g. bold and italic, but not colors. (See Message Formatting in Slack documentation on how to use styles.) You can use colors for your attachments. That will however result in a vertical color bar … Read more
Regex should be a fast approach:
The opening modes are exactly the same as those for the C standard library function fopen(). The BSD fopen manpage defines them as follows: