Self-tutoring about Python coding: the tutor mentions an observation about Python class methods. A Python class method can be called by referencing its containing class name rather than an instance. Such a method might be called via classname.the_method(). However, it’s …
Tutoring coding, operators come up. The tutor mentions the dot. From a top-down point of view, the . (aka, dot) operator sets the context wherein you want to refer. Therefore, obj0.helloWorld(); means “I want to execute the method helloWord() that …
The tutor brings up a couple of quick points about printing strings in Python. In computer science, concatenate is another way of saying join. In Python, it’s done with the “plus” sign: s0=”Hello.” s1=” How are you?” print(s0+s1) gives the …
The tutor shows an example program centered around string indexing. In my July 31 post, I opened the topic of string indexing in Python. A string, moving forward, starts at position [0]; however, from the end, it starts at [-1]. …
The tutor gives a Python example of string indexing. In computer science, a string is a word which can include non-alphabetical characters. An example of a string is “desk17”. Let’s imagine creating the variable thestring with the value “desk17”, as …
The tutor focuses on Python’s pow(x,y) command. Back in my post on May 3, 2014 I pointed out that In the left expression above, c is the root while b is the exponent. Some might also call b the “power”. …
The tutor comments on a possibly surprising characteristic of Python. Unlike Perl or Java, Python doesn’t use semicolons at the end of statements. Furthermore, it doesn’t use braces around loops. A loop body is indicated by indentation: for i in …
The tutor seeks to clarify some ideas about Python’s print command. I refreshed Python on one of my computers yesterday; I uninstalled Python 2.7, then installed Python 3.4 instead. To do so, I went to python.org. I was using a …
The tutor offers a quick way to test the Python installation. If you’re running Linux, I’d guess Python is on-board. With Windows, Python likely needs to be installed. In either case, to test it, you can write a test script, …
The tutor starts about Python. I met the programming language Python about three years ago. It’s got the quick scriptiness of Perl, along with object-oriented capabilities. Furthermore, it’s applicable to small devices, like phones. Python’s got a great IDE: IDLE. …