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Python
8 Quiz Sets
Python
Python Full Review
Answer
25
questions in 10 minutes.
Python Full Review |
1. A(n) _______________ expression is made up of two or more boolean expressions.
Function rounds floating point numbers - round(1.773) = 2
Makes lowercase
Compound
String format character; use for user formatting
2. Round()
Signed integer decimal
Compound
True - false
Function rounds floating point numbers - round(1.773) = 2
3. .lower
Copy a file or directory
Makes lowercase
1. Names code like variables name strings/numbers 2. Takes arguments the way scripts take argv 3. Using 1 and 2 - allows for mini-commands
68
4. Integer division
If
Accepts a string - prints it - and then waits for the user to type something and press enter (or return).
Defines a function
An operation that divides one integer by another and yields an integer. Integer division yields only the whole number of times that the numerator is divisible by the denominator and discards any remainder.
5. Fruitful function
Signed integer decimal
Pint some arguments
Available everywhere
A function that returns a value when it is called.
6. Cd
If parts of the duplicated code have to be corrected - the correction has to be made many times.
Sorts a list from smallest to greatest
Change directory
Specifies exception handlers
7. True/false: to get the total number of iterations of a nested loop - multiply the number of iterations of all the loops.
Repetition
True
Compound
<=
8. ~88
Mechanism or an artificial entity that can be guided by automatic controls.
Bitwise not - flips all bits in a number - for integers - effectively adds 1 and makes negative
Is always executed in the end. Used to clean up resources.
A function used in a program or script that causes the python interpreter to display a value on its output device.
9. What's the difference between argv and raw_input()?
Ram
Function parameter
String for multiple lines of text; can be multi-line comment
The difference has to do with where the user is required to give input. If they give your script inputs on the command line - then you use argv. If you want them to input using the keyboard while the script is running - then use raw_input(). Line 3: Script - first - second - third = argv - Line 3 "unpacks" argv so that - rather than holding all the arguments - it gets assigned to four variables you can work with: script - first - second - and third. This may look strange - but "unpack" is probably the best word to describe what it does. It just says - "take whatever is in argv - unpack it - and assign it to all of these variables on the left in order." (ex13.py)
10. The term _______________ refers to all of the physical devices that a computer is made of.
To repeat a commands a set number of times.
Hardware
A value provided to a function when the function is called. This value is assigned to the corresponding parameter in the function.
Double alternative
11. In flowcharting - the _______________ symbol is used to represent a boolean expression.
Diamond
True
Repeated execution of a set of programming statements.
True
12. Global variable
Ascii formfeed (ff) - ascii control character. Forces printer to eject current page and continue printing at top of another.
Compound
Can be seen through a program module - even inside of functions.
Python's built-in features are called modules. Also called "libraries" by some programmers. Example speech: "you want to use the sys module."
13. A(n) ?? Validation loop is sometimes called an error trap or an error handler.
A formatter text that is used to give the user the ability to type in a question
List directory
Input
Function of an object
14. If
Function parameter
Used to determine - which statements are going to be executed
True
An error in the code that means it will not run. Incorrect spelling of keywords - leaving off speech marks or brackets - not using colons for "if" statements.
15. True/false: ram is a volatile memory used for temporary storage while a program is running.
True
Exponent
Converts to a string
Remove directory
16. In python - the variable in the for clause is referred to as the _____ because it is the target of an assignment at the beginning of each loop iteration.
Use by entering at the end of the variable used to specify the file you have 'opened'.
Target variable
Gives you the whole list - starting at the 0 position
Make directory
17. A(n) ?? Structure causes a statement or set of statements to execute repeatedly.
Unsigned hexadecimal (uppercase)
3
For x in a:
Repetition
18. Mkdir
A file containing definitions and statements - Intended to be imported by other programs.
Make directory
Placeholders that "punch out a hole in the code % is the character for this
Create a user defined exception
19. Floating point
A programming language like python that is designed to be easy for humans to read and write.
A decimal
True
True
20. Pass
Does nothing
Matches the beginning of a string
A named sequence of statements that performs some useful operation. Functions may or may not take parameters and may or may not produce a result
Matches either a or b or c
21. Instance variable
Used for debugging purposes
Variable only available to one instance of a class
Conditionally
Input validation
22. Whitespace
When a boolean expression is evaluated the evaluation starts at the left hand expression and proceeds to the right - stopping when it is no longer necessary to evaluate Any further to determine the final outcome.
A list of possible values for a variable. In the fortune teller there was an array of jobs.
Separates statements
Return the number of items from a sequence or characters in a string
23. >=
The "argument variable - " a very standard name in programming - that you will find used in many other languages. This variable holds the arguments you pass to your python script when you run it. You know how you type python ex13.py to run the ex13.py file? Well the ex13.py part of the command is called an "argument." What we'll do now is write a script that also accepts arguments.
Imports all functions and variables from a module - can cause conflicts with user defined functions and vars - better to import only necessary functions - from module import *
False
Greater than or equal
24. Raw_input
Accepts a string - prints it - and then waits for the user to type something and press enter (or return).
Change directory
A named sequence of statements that performs some useful operation. Functions may or may not take parameters and may or may not produce a result
Escape; tells python to ignore following character - or puts difficult characters into strings when used with specific escape sequences
25. Which of the following represents an example to calculate the sum of the numbers (accumulator)?
On a robot - internal sensing mechanisms. On a human - a sense of the relative positions of different parts of ones own body.
Module - contains important objects and functions
In general is a remembered group. You can get the value of what matched by using the groups() method of the object returned by re.search
Total += number
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