I have a python code in which I calculate a quantity for a large number of values of a parameter and then plot the quantity as a function of a parameter. Here is an example However I want that the plot to get dynamically updated such that every time a new element of the q array is calculated it is
Tag: python
TypeError: ‘bool’ object is not callable
I am brand new to python. I got a error Would you please instruct how to solve this issue? The first “if” check is fine, but “while not” has this error. Answer You do cls.isFilled = True. That overwrites the method called isFilled and replaces it with the value True. That method is now…
Adapt an iterator to behave like a file-like object in Python
I have a generator producing a list of strings. Is there a utility/adapter in Python that could make it look like a file? For example, Because data may be big and needs to be streamable (each fragment is a few kilobytes, the entire stream is tens of megabytes), I do not want to eagerly evaluate the whole gene…
Test discovery failure when tests in different directories are called the same
Using py.test, two tests called the same in different directory causes py.test to fail. Why is that? How can I change this without renaming all the tests? To duplicate do: Answer Putting an __init__.py is one way of resolving the conflict. Unlike nose, current pytest does not try to unload test modules in ord…
Separation of business logic and data access in django
I am writing a project in Django and I see that 80% of the code is in the file models.py. This code is confusing and, after a certain time, I cease to understand what is really happening. Here is what bothers me: I find it ugly that my model level (which was supposed to be responsible only for the work
Python : TypeError: can’t multiply sequence by non-int of type ‘float’
I am newbie programmer trying to make an irc bot that parse xml and paste its content on a channel. Usually i find my answer on google, but this time i can’t find my answer. when i’m trying to multiply q0 it always showing Im trying to make q0 int or float but it just make another error q0 value
How to add column in ManyToMany Table (Django)
From the example of Django Book, I understand if I create models as following: The Django would create a new table(A_B) beyond Table A, which has three columns: id a_id b_id But now I want to add a new column in the Table A_B, thus would be very easy if I use normal SQL, but now anyone can help me
How to add a new column to an existing DataFrame?
I have the following indexed DataFrame with named columns and rows not- continuous numbers: I would like to add a new column, ‘e’, to the existing data frame and do not want to change anything in the data frame (i.e., the new column always has the same length as the DataFrame). How can I add colum…
How to Reverse Hebrew String in Python?
I am trying to reverse Hebrew string in Python: but I get: Care to explain what I’m doing wrong? EDIT: I’m also trying to save the string into a file using: but now I get: Any ideas how to fix that, too? Answer Adding u in front of the hebrew string works for me: To your second question, you can
Remove duplicates by columns A, keeping the row with the highest value in column B
I have a dataframe with repeat values in column A. I want to drop duplicates, keeping the row with the highest value in column B. So this: Should turn into this: I’m guessing there’s probably an easy way to do this—maybe as easy as sorting the DataFrame before dropping duplicates—but I don’t…