VPython Lists: Difference between revisions
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===Lists of Strings=== | ===Lists of Strings=== | ||
Lists can also be comprised of words (strings). These words must have "" surrounding them for the word to be considered a string and for the computer to accept it. | Lists can also be comprised of words (strings). These words must have "" surrounding them for the word to be considered a string and for the computer to accept it. | ||
Example: strList = ["lists","are","super","cool"] | Example: strList = ["lists","are","super","cool"] | ||
===Lists of Both=== | ===Lists of Both=== | ||
Lists don't have to be made up of the same type of variable. | Lists don't have to be made up of the same type of variable. | ||
For example, the list ["twenty",20,5,"five"] is a valid list. | For example, the list ["twenty",20,5,"five"] is a valid list. | ||
===Lists of Lists=== | ===Lists of Lists=== | ||
Lists can also contain lists within themselves. These are called nested loops. | Lists can also contain lists within themselves. These are called nested loops. | ||
Example: nested = [1,"nest",[1,2]] | Example: nested = [1,"nest",[1,2]] | ||
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For example, consider the list nums = [47,36,11,19] | For example, consider the list nums = [47,36,11,19] | ||
nums[0] = 47 | nums[0] = 47 | ||
nums[1] = 36 | nums[1] = 36 | ||
nums[2] = 11 | nums[2] = 11 | ||
nums[3] = 19 | nums[3] = 19 | ||
Revision as of 15:16, 4 December 2015
Claimed by Natalie Standish
This page is about using lists in VPython to do computing at a scale larger than one or two objects.
VPython List
State, in your own words, the main idea for this topic
Types of Nests
Lists of Numbers
The most basic list is one that has numbers in it. The list of numbers may contain integers, floats, or both.
Example: numList = [1,2,3.4,5]
Lists of Strings
Lists can also be comprised of words (strings). These words must have "" surrounding them for the word to be considered a string and for the computer to accept it.
Example: strList = ["lists","are","super","cool"]
Lists of Both
Lists don't have to be made up of the same type of variable.
For example, the list ["twenty",20,5,"five"] is a valid list.
Lists of Lists
Lists can also contain lists within themselves. These are called nested loops.
Example: nested = [1,"nest",[1,2]]
Empty Nests
Empty nests are commonly used to initiate a variable and avoid program errors when calling upon that empty list. They generally have variables appended into them and grow throughout the program.
Properties of Lists
Indices
Indexing a list is how we can identify the value at a certain spot in the list. The first component of the list is the 0th index and then it goes up by one until the last component (the nth-1 index in an list of length n). When trying to find the nth index, we use this notation: listName[n]
For example, consider the list nums = [47,36,11,19]
nums[0] = 47
nums[1] = 36
nums[2] = 11
nums[3] = 19
How do we visualize or predict using this topic. Consider embedding some vpython code here Teach hands-on with GlowScript
Examples
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Connectedness
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History
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See also
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