I am having a lot of trouble understanding how the class_weight parameter in scikit-learn’s Logistic Regression operates. The Situation I want to use logistic regression to do binary classification on a very unbalanced data set. The classes are labelled 0 (negative) and 1 (positive) and the observed dat…
Tag: python
Python regex AttributeError: ‘NoneType’ object has no attribute ‘group’
I use Regex to retrieve certain content from a search box on a webpage with selenium.webDriver. The code works as long as the search box returns results that match the Regex. But if the search box replies with the string “No results” I get error: AttributeError: ‘NoneType’ object has n…
Parsing html using Selenium – class name contains spaces
I’m trying to parse some html using Selenium. The problem is that it raises error in case the class name contains spaces. Here is the tag I’m searching for: <p class=”p0 ng-binding”>text</p> I’ve tried these two options: Could anybody give me a hint? Answer The p elem…
double click to open an ipython notebook
Related posts: Open an ipython notebook via double-click on osx How can I open Ipython notebook from double click? I always cd to the directory of the notebook, then type ipython notebook in the browser and then open it in the browser. This steps is very inconvenient. In windows, I remembered that I can chang…
Slow scrolling down the page using Selenium
I’m trying to scrape some data from flight search page. This page works this way: You fill in a form and then you click on the button search – this is ok. When you click the button you are redirected to the page with results and here is the problem. This page is adding continuously results for exa…
Import SAS data file into python data frame
I’m working on a data set (PSID) that gives data in a SAS format (a .txt and another file containing instructions to interpret the data). I cannot find anything in Python to read this type of data. Does anyone know of a pre-existing module/script to read SAS data? Edit (added from a comment to an answer…
Python: Multiple try except blocks in one?
Is there a neat way to have multiply commands in the try block so that it basically tries every single line without stopping as soon as one command yields an error? Basically I want to replace this: with this: Defining a list so I could loop through the commands seems to be a bad solution Answer I’d say…
NLTK: Package Errors? punkt and pickle?
Basically, I have no idea why I’m getting this error. Just to have more than an image, here is a similar message in code format. As it is more recent, the answer of this thread has already been mentioned in the message: Answer Perform the following: Then when you receive a window popup, select punkt und…
Elasticsearch python client: Getting the ES version through API call
I want to get the current Elasticsearch version through the python API. I could easily get it through a http call like But I am wondering is there any way to get the version through the API call instead of http request to the endpoint. Like I went through the Elasticsearch python client documentation, but cou…
Sorting entire csv by frequency of occurence in one column
I have a large CSV file, which is a log of caller data. A short snippet of my file: I want to sort the entire list by the frequency of occurrence of customers so it will be like: I’ve tried groupby, but that only prints out the Company Name and the frequency but not the other columns, I also tried