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Convert your data: Indexes and ratios (part one)

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Selecting transcript lines in this section will navigate to timestamp in the vide Data conversion is the conversion of computer data from one format to another. Throughout a computer environment, data is encoded in a variety of ways. For example, computer hardware is built on the basis of certain standards, which requires that data contains, for example, parity bit checks. Similarly, the operating system is predicated on certain standards for data and file handling. Furthermore, each computer program handles data in a different manner. Whenever any one of these variables is changed, data must be converted in some way before it can be used by a different computer, operating system or program.  Even different versions of these elements usually involve different data structures. For example, the changing of bits from one format to another, usually for the purpose of application interoperability or of capability of using new features, is merely a data conversion. Data conversions may b...
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Using the date, time, and datetime classes

The basics of the Python language, we're going to turn our attention to using the rich library of predefined code that comes with Python in order to build functionality into Python apps. In this page, we're going to focus on manipulating dates and times. So here in my project, I'm going to open up dates_start. So, what I'm doing here is telling the Python interpreter that from the datetime standard module that comes with the standard library, I want to import the date, time, and datetime classes. These are predefined pieces of functionality in the Python library that let me manipulate dates and times. # Example file for working with date information # from datetime import date from datetime import time from datetime import datetime def main ():   ## DATE OBJECTS   # Get today's date from the simple today() method from the date class   today = date . today ()   print ( "Today's date is " , today )     # print out the date's individual co...
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When to go interactive

  So I want to discuss  when you might think about ticking things  and going interactive.  And listen, the spoiler alert on this one is,  my answer is kind of, always, sort of.  If you can,  if you have the time and the budget  to make interactive things, you should.  So that's the short answer, but here's the longer answer.  I like to start off this way.  How did you learn to count?  When I was a little kid, I learned using these,  they're called Montessori counting beads.  And so when I was three years old,  someone handed me three of those little beads  in the upper-left-hand corner and said, that's three.  And that's not that weird.  Everybody learns to count that way probably with blocks  or something like that.  But then they handed me this single-wired together object  in the far-upper-right and said, that's 10.  Then they handed me the flat object in front of those ...
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