Scripting and Programming Foundations WGU Exam
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What is an operator and what does it do? - Answer-An
operator takes two operands (values) and does something
with them. It is an object capable of manipulating a value.
If it is a comparison or logical operator it would compare to
see if they are similar or dissimilar. If it is a mathematical
operator it would perform mathematical calculations.
What is an expression? - Answer-something that has a
value.
What is the difference in a terminal and non-terminal
expression? - Answer-A terminal is a final value, while a
non-terminal can be reduced further.
What is proper Python grammar for making an
expression? - Answer-Expression → Expression Operator
Expression
The Expression non-terminal that appears on the left side
can be replaced by an Expression, followed by an
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Operator, followed by another Expression. For example, 1
+ 1 is an Expression Operator Expression.
What is a variable? - Answer-a name that refers to a value
What are the three main types of data covered? How do
you declare each one? - Answer-string is a sequence of
characters surrounded by quotes, either single or double
example: myVar = "string data"
What is an editor? - Answer-A program that allows you to
write code
What is a compiler? - Answer-A program that produces
other programs. The compiler does all the work at once
and then runs the new program. We're translating the
code we wrote to computer code all at once. This is often
when we produce an .exe (executable) file.
What is an interpreter? - Answer-A program that runs code
one line at a time. Instead of converting all of the code at
once it runs each line as it's needed. It interprets that
specific line from your code to computer code.
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Integer is a number - Answer-example: myVar = 33
Boolean is a true or false value - Answer-example: myVar
= True
What is grammar used for in programming? - Answer-In a
programming language like Python, the code must match
the language grammar exactly. When programming
language grammar is not followed the interpreter will
return a Syntax Error message. This means that the
structure of the code is inconsistent with the rules of the
programming language.
How do you change the value of a variable with Python? -
Answer-Using the = character to assign a new value
x=6
x=9
print x # would print out 9
How to do you join multiple variables together with string
data in Python? What is this called? - Answer-Using the +
sign to concatenate the values