Python Projects for Beginners a ten-Week Bootcamp Approach to Python Programming

Copying a List

So how do you create a similar list without altering the original? You copy it! Let’s see how:

# using [:] to copy a list data = [5, 10, 15, 20] data_copy = data[ : ] # a single colon copies the list data[0] = 50 print( "data: { }\t data_copy: { }".format(data, data_copy) )

Go ahead and run that cell. The output this time will result in only our data variable having the first item set to 50. As data_copy was merely a copy of the list, now we’re able to always keep the original list in tact if we need to use it again.

Note	You can also use the method .copy( ).
	MONDAY EXERCISES
1.	Sports: define a list of strings, where each string is a sport. then output each sport with the following line “I like to play {}”…
2.	First Character: For the following list, print out each item’s first letter. (output should be ‘J’, ‘A’, ‘S’, ‘K’) names = [‘John’, ‘Abraham’, ‘Sam’, ‘Kelly’]

today was all about our first data collection type, the list. there was a lot to cover, but it’s important to understand how to define, change values, and make copies of lists.
ChApter 4 LIsts And Loops
Tuesday: For Loops
Today will be spent covering a crucial concept in programming, loops. In most applications, you’re going to need the ability to run the same code more than once. Rather than writing the same lines of code several times, we use loops. In Python there are two types of loops, today’s lesson will be on “For Loops.”
To follow along with this lesson, let’s continue from our previous notebook file
“Week_04” and simply add a markdown cell at the bottom that says “For Loops.”