Plutonic Rainbows

Panic's Coda 2 is an expensive piece of software when you are only writing in Python. I recently moved over to Sublime Text. It's actually free, if for the occasionally prompt to buy it. If you're on a budget, I totally recommend it.

A simple script that just checks the file size and copies the file to a target destination that you specify. That's done when you pass in script, file_from, file_to = argv at the very beginning.

from sys import argv

script, file_from, file_to = argv

file_in = open(file_from)
indata = file_in.read()

print "The file called '%s'is %r bytes in length" % (file_from, len(indata))

file_out = open(file_to, 'w')
file_out.write(indata)

file_in.close()
file_out.close()

I've been looking again at functions and how they work. They are great for simple math but can do a lot more besides. With that in mind, here is a simple way of multiplying numbers with user input. Remember to tell Python to use float when handling numbers.

def calc(value1, value2):
    return value1 * value2

print "\nLet's multiply two numbers.\n" 

value1 = (float(raw_input("Enter a number: ")))
value2 = (float(raw_input("Enter another number: ")))


answer = calc(value1, value2)

print "\nThe answer is {0:.2f}.\n".format (answer)

A great tutorial provided by @iamtrask. It teaches back propagation using a very simple toy example written in Python. You can follow the lessons here.