What does the “r” in pythons re.compile(r’ pattern flags’) mean?
I am reading through http://docs.python.org/2/library/re.html. According to this the “r” in pythons re.compile(r‘ pattern flags’) refers the raw string notation :
Python
Does python have a sorted list?
By which I mean a structure with:
Python : Compare two csv files and print out differences
I need to compare two CSV files and print out differences in a third CSV file.
In my case, the first CSV is a old list of hash named old.csv and the second CSV is the new list of hash which contains both old and new hash.
Python time.sleep() vs event.wait()
I want to perform an action at a regular interval in my multi-threaded Python application. I have seen two different ways of doing it
Getting a default value on index out of range in Python
a=['123','2',4] b=a[4] or 'sss' print b I want to get a default value when the list index is out of range (here: ‘sss’). How can I do this? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat … Read more
matplotlib: colorbars and its text labels
I’d like to create a colorbar legend for a heatmap, such that the labels are in the center of each discrete color. Example borrowed from here:
How can I show figures separately in matplotlib?
Say that I have two figures in matplotlib, with one plot per figure:
How to save a figure remotely with pylab?
I’m trying to generate a figure at a remote computer with the command pylab.savefig. But I got such error: Unable to access the X Display, is $DISPLAY set properly? How can I save the figure properly? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help … Read more
How to create a conditional task in Airflow
I would like to create a conditional task in Airflow as described in the schema below. The expected scenario is the following:
How to exit the entire application from a Python thread?
How can I exit my entire Python application from one of its threads? sys.exit() only terminates the thread in which it is called, so that is no help.