python Archives - Page 183 of 830

How to save a pandas DataFrame table as a png

August 20, 2022 by Magenaut

I constructed a pandas dataframe of results. This data frame acts as a table. There are MultiIndexed columns and each row represents a name, ie index=['name1','name2',...] when creating the DataFrame. I would like to display this table and save it as a png (or any graphic format really). At the moment, the closest I can get is converting it to html, but I would like a png. It looks like similar questions have been asked such as How to save the Pandas dataframe/series data as a figure?

What does ‘weight’ do in tkinter?

August 20, 2022 by Magenaut

I’ve been searching different websites trying to find out what weight does in tkinter. I got this from TkDocs:

Rolling window for 1D arrays in Numpy?

August 20, 2022 by Magenaut

Is there a way to efficiently implement a rolling window for 1D arrays in Numpy?

How do I specify new lines on Python, when writing on files?

August 20, 2022 by Magenaut

In comparison to Java (in a string), you would do something like "First LinernSecond Line".

Why do you need explicitly have the “self” argument in a Python method?

August 20, 2022 by Magenaut

When defining a method on a class in Python, it looks something like this:

How to un-escape a backslash-escaped string?

August 20, 2022 by Magenaut

Suppose I have a string which is a backslash-escaped version of another string. Is there an easy way, in Python, to unescape the string? I could, for example, do:

Checking whether a string starts with XXXX

August 20, 2022 by Magenaut

I would like to know how to check whether a string starts with “hello” in Python.

How to get text with Selenium WebDriver in Python

August 20, 2022 by Magenaut

I’m trying to get text using Selenium WebDriver and here is my code. Please note that I don’t want to use XPath, because in my case the ID gets changed on every relaunch of the web page.

Execute code when Django starts ONCE only?

August 20, 2022 by Magenaut

I’m writing a Django Middleware class that I want to execute only once at startup, to initialise some other arbritary code. I’ve followed the very nice solution posted by sdolan here, but the “Hello” message is output to the terminal twice. E.g.

Stop reading process output in Python without hang?

August 20, 2022 by Magenaut

I have a Python program for Linux almost looks like this one :