Learning Python Archives

Python: How to remove empty lists from a list?

December 16, 2020 Andrew Rocky

Question or problem about Python programming: I have a list with empty lists in it: list1 = [[], [], [], [], [], ‘text’, ‘text2’, [], ‘moreText’] How can I remove the empty lists so that I get: list2 = [‘text’, ‘text2’, ‘moreText’] I tried list.remove(”) but that doesn’t work. How to solve the problem: Solution […]

How to find out whether a file is at its `eof`?

December 16, 2020 Simon Abital

Question or problem about Python programming: fp = open(“a.txt”) #do many things with fp c = fp.read() if c is None: print ‘fp is at the eof’ Besides the above method, any other way to find out whether is fp is already at the eof? How to solve the problem: Solution 1: fp.read() reads up […]

Why doesn’t zeromq work on localhost?

December 16, 2020 Ollie MC

Question or problem about Python programming: This code works great:

Decorating Hex function to pad zeros

December 16, 2020 James Cameron

Question or problem about Python programming: I wrote this simple function:

Multi-level defaultdict with variable depth?

December 16, 2020 Odhran Miss

Question or problem about Python programming: I have a large list like:

Django not sending emails to admins

December 16, 2020 Aba Tayler

Question or problem about Python programming: According to the documentation, if DEBUG is set to False and something is provided under the ADMINS setting, Django will send an email whenever the code raises a 500 status code. I have the email settings filled out properly (as I can use send_mail fine) but whenever I intentionally […]

How to obtain values of request variables using Python and Flask

December 16, 2020 Ollie MC

Question or problem about Python programming: I’m wondering how to go about obtaining the value of a POST/GET request variable using Python with Flask. With Ruby, I’d do something like this: variable_name = params[“FormFieldValue”] How would I do this with Flask? How to solve the problem: Solution 1: You can get posted form data from […]

pip install -U PySide error

December 16, 2020 Odhran Miss

Question or issue on macOS: Does anyone know how to avoid the following error when running pip install -U PySide as per the official website instructions here: https://pypi.python.org/pypi/PySide/#installing-pyside-on-a-mac-os-x-system

Python.h missing from Ubuntu 12.04

December 16, 2020 Simon Abital

Question or problem about Python programming: I installed an openflow controller on my Ubuntu 12.04 called RYU using:

How can I minimize/maximize windows in macOS with the Cocoa API from a Python script?

December 16, 2020 James Cameron

Question or issue on macOS: How can I minimize/maximize windows in macOS from a Python script? On Windows, there’s a win32 api (the ShowWindow() function) that can do this. I’d like the macOS equivalent. I’d like to have a script be able to find a window from its title, then minimize or maximize it.