The Numpythonic approach: (using numpy.dot in order to get the dot product of two matrices) The Pythonic approach: The length of your second for loop is len(v) and you attempt to indexing v based on that so you got index Error . As a more pythonic way you can use zip function to get the columns of a list then use starmap and mul within a list comprehension:
Try square brackets: i.e.: use an list instead of a set
The rolling mean returns a Series you only have to add it as a new column of your DataFrame (MA) as described below. For information, the rolling_mean function has been deprecated in pandas newer versions. I have used the new method in my example, see below a quote from the pandas documentation. Warning Prior to version 0.18.0, pd.rolling_*, pd.expanding_*, and pd.ewm* were module level functions and are … Read more
A sigma (∑) is a Summation operator. It evaluates a certain expression many times, with slightly different variables, and returns the sum of all those expressions. For example, in the Ballistic coefficient formula The Python implementation would look something like this: You may want to look at the enumerate function, and beware precision problems.
Django 2.0 removes the django.core.urlresolvers module, which was moved to django.urls in version 1.10. You should change any import to use django.urls instead, like this: Note that Django 2.0 removes some features that previously were in django.core.urlresolvers, so you might have to make some more changes before your code works. See the features deprecated in 1.9 for details on those additional changes.
Those are not actual errors, but warnings. They are there because you are trying to divide something by zero. Namely, you are setting M[0] = 0 and then dividing by M[0] (at first iteration, where m = 0) and same for P[0]. The question is, what do you want the first values to be? Maybe a solution would be initialize the … Read more
manage.py should live in the root project folder, so if you cd into C:Users/arpchauh/PycharmProjects/post_blog, you should be able to run the command.
You try to index outside the range: Change to: And it works. You create t with length of M: So you can only access M elements in t. Python always starts indexing with zero. Therefore: will do M loops, while: will do M+1 loops.
I am currently using PyCharm with Python version 3.4.3 for this particular project. This PyCharm previously had Python2.7, and I upgraded to 3.4.3. I am trying to fetch data from an Excel file using Pandas. Here is my code: When I ran this code, I am getting this error. I searched Stackoverflow and found some … Read more
I’m using Python 3.2 and trying to exit it after the user inputs that they don’t want to continue, is there code that will exit it in an if statement inside a while loop? I’ve already tried using exit(), sys.exit(), sys.quit(), quit(), and raise SystemExit.