Scripting and Programming -
Foundations - C173
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.
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? - answersomething that has a value.
What is the difference in a terminal and non-terminal expression? - answerA terminal is
a final value, while a non-terminal can be reduced further.
What is proper Python grammar for making an expression? - answerExpression →
Expression Operator Expression
The Expression non-terminal that appears on the left side can be replaced by an
Expression, followed by an Operator, followed by another Expression. For example, 1 +
1 is an Expression Operator Expression.
What is a variable? - answera name that refers to a value
What are the three main types of data covered? How do you declare each one? -
answerstring is a sequence of characters surrounded by quotes, either single or double
example: myVar = "string data"
Integer is a number - answerexample: myVar = 33
Boolean is a true or false value - answerexample: myVar = True
What is grammar used for in programming? - answerIn 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? - answerUsing 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? - answerUsing the + sign to concatenate the values
What does it mean to index a string? How do you do that with Python code? -
answerThis is what we call selecting a sub-sequence of a string. You do this in Python
by specifying the character you want to access by its index position. Index position
begins at 0. For example, this code would print out the letter J:
name = 'John'
print name[0]
What does it mean to slice a string? How do you do that with Python code? -
answerSlicing is simply obtaining a subset of data from a string. You may have also
heard this called string extraction. You do this in Python by specifying the index position
where you want to begin and where you want to end. Everything from the starting point
up until the end point will be extracted. For example, this code would print out "Jo":
name = 'John'
print name[0:2]
+ - answerconcatenate or add
= - answerassignment
* - answermultiply
- - answersubtract
/ - answerdivide
% - answerModulos, does division and returns the remainder
What does the * operator do when applied to string data? - answerIt writes out the string
data multiple times. For example, print '!' * 12 would output !!!!!!!!!!!! (12 exclamation
points).
What does a procedure do? - answertakes in inputs, does some processing, and
produces outputs
Foundations - C173
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.
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? - answersomething that has a value.
What is the difference in a terminal and non-terminal expression? - answerA terminal is
a final value, while a non-terminal can be reduced further.
What is proper Python grammar for making an expression? - answerExpression →
Expression Operator Expression
The Expression non-terminal that appears on the left side can be replaced by an
Expression, followed by an Operator, followed by another Expression. For example, 1 +
1 is an Expression Operator Expression.
What is a variable? - answera name that refers to a value
What are the three main types of data covered? How do you declare each one? -
answerstring is a sequence of characters surrounded by quotes, either single or double
example: myVar = "string data"
Integer is a number - answerexample: myVar = 33
Boolean is a true or false value - answerexample: myVar = True
What is grammar used for in programming? - answerIn 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? - answerUsing 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? - answerUsing the + sign to concatenate the values
What does it mean to index a string? How do you do that with Python code? -
answerThis is what we call selecting a sub-sequence of a string. You do this in Python
by specifying the character you want to access by its index position. Index position
begins at 0. For example, this code would print out the letter J:
name = 'John'
print name[0]
What does it mean to slice a string? How do you do that with Python code? -
answerSlicing is simply obtaining a subset of data from a string. You may have also
heard this called string extraction. You do this in Python by specifying the index position
where you want to begin and where you want to end. Everything from the starting point
up until the end point will be extracted. For example, this code would print out "Jo":
name = 'John'
print name[0:2]
+ - answerconcatenate or add
= - answerassignment
* - answermultiply
- - answersubtract
/ - answerdivide
% - answerModulos, does division and returns the remainder
What does the * operator do when applied to string data? - answerIt writes out the string
data multiple times. For example, print '!' * 12 would output !!!!!!!!!!!! (12 exclamation
points).
What does a procedure do? - answertakes in inputs, does some processing, and
produces outputs
