KPRIDE
Keywords
The code snippet below contains each of these key python programming concepts. Can you identify which line number they're on?
Being able to understand and use the right words to describe the code you're looking at helps you know what to search for and how to ask for help when you're writing your own code
Progress:
arithmetic operator: symbol or characters used to perform a mathematical process on input data
assignment: setting the value of a variable
built-in subprogram: a type of pre-existing subprogram which you can use in python without having to import any modules or defining it yourself (e.g. input / print)
character: individual symbol, letter or digit that forms part of a string
comments: code is easier to read when each line or section of code is described in a way that helps other programmers understand what it does
constant: named value which is set once but remains the same whilst the program runs
indentation: code is easier to read when tabs or spaces are used to move blocks of code across to the right. This is necessary in python but optional in other programming languages
integer: a whole number
iteration: using FOR to loop through each value in a data structure (e.g. list or string)
list: data structure which can grow or shrink to store as many values as required, keeping them in order
output: using print(...) to display a message to the user
parameter: value passed into a subprogram which then behaves like a local variable for the scope of that subprogram
real: a number with a decimal point
string: data structure which stores multiple characters in order
subprogram call: part of the code which causes a subprogram to actually run
subprogram definition: part of the code which tells the code what to do when a subprogram runs
variable: named memory location which can store a value which can change when the program runs
whitespace: code is easier to read when blank lines are used to break the code into logical paragraphs
arithmetic operator: symbol or characters used to perform a mathematical process on input dataassignment: setting the value of a variablebuilt-in subprogram: a type of pre-existing subprogram which you can use in python without having to import any modules or defining it yourself (e.g. input / print)character: individual symbol, letter or digit that forms part of a stringcomments: code is easier to read when each line or section of code is described in a way that helps other programmers understand what it doesconstant: named value which is set once but remains the same whilst the program runsindentation: code is easier to read when tabs or spaces are used to move blocks of code across to the right. This is necessary in python but optional in other programming languagesinteger: a whole numberiteration: using FOR to loop through each value in a data structure (e.g. list or string)list: data structure which can grow or shrink to store as many values as required, keeping them in orderoutput: using print(...) to display a message to the userparameter: value passed into a subprogram which then behaves like a local variable for the scope of that subprogramreal: a number with a decimal pointstring: data structure which stores multiple characters in ordersubprogram call: part of the code which causes a subprogram to actually runsubprogram definition: part of the code which tells the code what to do when a subprogram runsvariable: named memory location which can store a value which can change when the program runswhitespace: code is easier to read when blank lines are used to break the code into logical paragraphs
Score: 0%
1/18: arithmetic operator
symbol or characters used to perform a mathematical process on input data
Type in a line number where you can see this keyword in the python code then press check, or click on a line number
1
# -------------------------------------------------------------------2
# Constants3
# -------------------------------------------------------------------4
TABLE_WIDTH = 855
6
# -------------------------------------------------------------------7
# Global variables8
# -------------------------------------------------------------------9
10
raceTable = [["Slug", 0.1, 23.1],11
["Snail", 0.2, 32.3],12
["Worm", 0.1, 11.6],13
["Frog", 0.5, 25.9],14
["Ladybird", 1.0, 48.1]]15
16
layout = ""17
18
# ===> Initialize the variables19
numberOfAnimals = 20
animal = 21
distance = 22
speed = 23
24
# -------------------------------------------------------------------25
# Sub programs26
# -------------------------------------------------------------------27
def calculateSpeed(pDistanceM, pTimeS):28
# ===> Convert the distance in metres to centimeters29
distanceCM = 30
31
# Calculate the speed in centimeters per second32
speedCMPerSecond = distanceCM / pTimeS33
34
# ===> give back the speed in centimeters per second to the code that called calculateSpeed35
36
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# -------------------------------------------------------------------38
# Main program39
# -------------------------------------------------------------------40
print ("Welcome to the Slow Animal Olympics:")41
42
# ===> Display a blank line43
44
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print ("=" * TABLE_WIDTH)46
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# ===> Set up 4 columns, 20 characters wide. The first is left aligned and the rest are center aligned48
layout = " "49
50
# display headings51
print(layout.format("Animal", "Distance(m)", "Time(s)", "Speed(cm/s)"))52
53
print ("-" * TABLE_WIDTH)54
55
# Work out the number of animals in the race56
numberOfAnimals = len(raceTable)57
58
# ===> Set up 4 columns as above but ensure that the speed is rounded to 2 decimal places59
layout = " "60
61
for i in range(numberOfAnimals):62
# ===> get values from the data structure63
animal = 64
distance = 65
time = 66
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speed = calculateSpeed(distance, time)68
print(layout.format(animal, distance, time, speed))69
70
print ("=" * TABLE_WIDTH)Predict
What do you think this program will output? What values do you think each variable will hold?
70
1
# -------------------------------------------------------------------2
# Constants3
# -------------------------------------------------------------------4
TABLE_WIDTH = 855
6
# -------------------------------------------------------------------7
# Global variables8
# -------------------------------------------------------------------9
10
raceTable = [["Slug", 0.1, 23.1],11
["Snail", 0.2, 32.3],12
["Worm", 0.1, 11.6],13
["Frog", 0.5, 25.9],14
["Ladybird", 1.0, 48.1]]15
16
layout = ""17
18
# ===> Initialize the variables19
numberOfAnimals = 20
animal = 21
distance = 22
speed = 23
24
# -------------------------------------------------------------------25
# Sub programs26
# -------------------------------------------------------------------27
def calculateSpeed(pDistanceM, pTimeS):28
# ===> Convert the distance in metres to centimeters29
distanceCM = 30
31
# Calculate the speed in centimeters per second32
speedCMPerSecond = distanceCM / pTimeS33
34
# ===> give back the speed in centimeters per second to the code that called calculateSpeed35
36
37
# -------------------------------------------------------------------38
# Main program39
# -------------------------------------------------------------------40
print ("Welcome to the Slow Animal Olympics:")41
42
# ===> Display a blank line43
44
45
print ("=" * TABLE_WIDTH)46
47
# ===> Set up 4 columns, 20 characters wide. The first is left aligned and the rest are center aligned48
layout = " "49
50
# display headings51
print(layout.format("Animal", "Distance(m)", "Time(s)", "Speed(cm/s)"))52
53
print ("-" * TABLE_WIDTH)54
55
# Work out the number of animals in the race56
numberOfAnimals = len(raceTable)57
58
# ===> Set up 4 columns as above but ensure that the speed is rounded to 2 decimal places59
layout = " "60
61
for i in range(numberOfAnimals):62
# ===> get values from the data structure63
animal = 64
distance = 65
time = 66
67
speed = calculateSpeed(distance, time)68
print(layout.format(animal, distance, time, speed))69
70
print ("=" * TABLE_WIDTH)Write each prediction of what the program will output.
You can also predict variable values e.g. a = 10
Predict / Run
See how accurate your predictions were. Did the code behave as you expected?
Investigate
Experiment by editing the code.
Ideas:
- Try the program with different input data
- Run it line by line (Ctrl and full stop) to see how variables change.
- Read through the comments and see if there are any challenges to complete
- Change the values of some variables or constants and see how that affects the program
- Is there any input data that can crash the program?
- Change the logic of the program to make it do something different
- Add comments explaining what you've discovered
Debug
This code has been sabotaged with some common mistakes. Can you find and fix them all?
Click on the button to add 5 more errors to the code
Extend
Use your creativity along with what you've learned to create your own python project.
You get more points for each python skill you use from the keywords section
Click on "tests" to see a description of which python skills to aim for and keep track of which ones you've already used