I am trying to create a matrix from a data frame and a list. The list and column 1 of the data frame contain the same strings, however, not all of the strings in the list are in the column 1 and are not in the same order (see example below). I would like to search through the data frame,
Tag: python
Adding multiple elements to dictionary inside the list and appending the dictionary every time and element is added
consider this is the list I want to add to the list of dictionaries below and every time I add the element I want the dictionary to create new dictionary within the list Exampel: I am new to python and not able to figure out how to do it. Thanks in advance Answer This should work: Output: Edit To address
How do I remove a common character from each element in my list?
I’m cleaning up my data after web scraping and the list has n before each element. SP500 = [‘nAAPL’, ‘nMSFT’, ‘nGOOG’, ‘nGOOGL’, ‘nAMZN’, ‘nTSLA’…] How should I go about removing the n from each element? Answer If you know it …
type object ‘PizzaMenu’ has no attribute ‘_default_manager’
I have following error while i try to reach PizzaDetailView on template: AttributeError at /pizza/6/ type object ‘PizzaMenu’ has no attribute ‘_default_manager’. Where is the problem? models.py views.py urls.py Answer Don’t name your view PizzaMenu, it will override the reference…
Error Installing H2O in Python – AttributeError: partially initialized module ‘h2o’ has no attribute ‘init’ (most likely due to a circular import)
I followed the steps given by the site (https://docs.h2o.ai/h2o/latest-stable/h2o-docs/downloading.html) and install the following: And the terminal return that “Successfully installed h2o-3.36.1.1”. However, when I run the code to optionally initialize H2O in Python and run a demo to see H2O at w…
Scipy minimize with pandas dataframe with group by
I have a data frame (a sample df below) and trying to minimize cost function on that. Below are minimize and cost function. Then I’m iterating this function in loop as below, which is working but takes lot of time and memory, Please note that I have bigger dataframe with more rows and columns, for this …
obtaining a single plot of two contour lines matplotlib
I am making a program that interpolates the points of some level curves, but when it comes to graphing, I am obtaining two individual graphs of the two level curves and not a single graph. I would like to get this output: Answer You need to declare plt.figure() only once, outside of the for loop. Inside the f…
Pandas groupby – Find mean of first 10 items
I have 30 items in each group. To find mean of entire items, I use this code. That returns a value like this. However, I would like to find the mean of the first 10 items in the group instead of the entire items. That code return only a single Value instead of a pandas series. So I’m getting errors
How to do line level logic in Pandas
I have a table that has a bunch of columns and I need to create a new column based on the row type but the logic will be different for each type of row. My data looks like this: type field1 field2 field3 field4 1 a b c 17 2 e f g 20 3 i j k 100 the
How to Python gnupg (GPG) encrypt with recipient’s email address rather than their fingerprint?
How to Python-gnupg (GnuPG / GPG / OpenPGP) encrypt with recipient’s email address rather than their fingerprint? This example shows (which failes on my Ubuntu 20.04 / such a thing, but it’s an old example; excerpt: More-current (maybe?) references (like this and this) do not mention recipient ema…