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Compsci 111 Quiz 1

Lecture 1 and 2

QuestionAnswer
what are the fundamental ideas of comp sci? -Information processing -Automation -Efficiency -Algorithms
what is a pseudocode? a notation resembling a simplified programming language, used in program design
immediate mode? python code written in interpreter window gets evaluated immediately
script mode? blank file, doesn't run immediately
why python? -easy to understand -popular and widely known -pseudocode that runs
What is the logistic flow of python program? 1) Read an expression 2) Evaluate it 3) Print result (Repeat)
what is scripting? -involves writing code in a file -transferable to other machines and can be used later
what does IDE stand for? Integrated Development Environment
what is a program? sequence of instructions that specifies how to perform a computation
difference between an algorithm and a program? -algorithm: thinking of way to solve an issue -program: very literal
What are the components of a program? -Input -Output -Computation -Conditional Execution -Repetition
Input Get data from source and then we process the data so its usable by the program
Output What you want to display to the user. A signal sent as a result of your program
Computation Some type of computation or numerical analysis Normally contains algorithmic process
Conditional Execution Checking for conditions w/in the program and executes the correct sequence of statements. Some code may not be executed (hence conditional)
Repetition Performing the action multiple times and normally controlled by conditional execution ->reduces the amount of code needed to run
How literal are programs? VERY literal. Must explain step-by-step
Natural Language vs Formal Language Normal: language people speak, evolves naturally Formal: has clear rules to express computation
Semantics ex) X = 2 Y = 2 + 3 // 2 Strings-> "this is my python string"
What are the two ways to comment? Using # or Docstrings
What's a docstring? Not evaluated b/c its a type of comment. Appears at the beginning of files or functions/methods Important b/c it allows you to understand the file
Python Process IDLE editor ->Python source code Python compiler ->Byte code +Input from user Python Virtual Machine(PVM) ->output
Structure of Python Program Docstring Import Statements Input Statements Computation Statements Output of Statements
What do all Python files end with? .py
Created by: carzec
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