Iterations
The 2 main keywords to disrupt iterative execution
What is continue and break?
Given a list ll, if we wanted to pop out each 0th element and do something with it, the reason why while ll: would work to pop all of them out is
What is ...
while ll and if ll is the same as asking while ll is not empty
By default, an empty sequence will be interpreted as a False boolean and True if non-empty
The 3 common comprehension datatypes
What is list, set, and dictionary?
As many parts of a function as you can name
What is ...
definition, function name, parameters, colon, function signature, indentation, code block
The while loop conditional for i when we intend on comparing pairs of elements
Plus, the for loop expression for the same
What is ...
while i < len(sequence)-1
for i in range(len(sequence)-1)
If you had a program to find the max/biggest element in a list by having a variable that stores the current best and compares that to the current element, what could you initialize it to first
What is ...
The first element ll[0], float('inf'), None
Comprehension expression + function for returning the string of all vowels (duplicates considered too) given a string s
What is ...
"".join([char for char in s if char in "aeiouAEIOU"])
Places you have heard the words inclusion, exclusion, step, and their meanings
What is ...
Up to you but commonly in ranges
Start is inclusive/included, end is exclusive/excluded, step is in what sense do you get the next element (step=1, step=2, step=-1)
The attribute that makes a void function void
What is no return?
3 differences between for loops and while loops in general and/or relation to a sequence and its elements
What is ...
For accesses elements directly but while does it indirectly with the use of index pointer i
Bounded vs unbounded, ie. you do or don't know exactly how many times the iteration is going to run
Up to my discretion :)
Give as many logic keywords as you can
What is ...
if elif else and or not True False in is
Any objective to semi-subjective advantage of comprehensions over other iterative forms
What is ...
Concise, creates new datastructure, etc. (up to my discretion)
As many built in functions (NOT methods) as you can name
What is ...
max, min, len, all, any, bool, dict, int, str, float, input, isinstance, list, map, open, print, set, range, sorted, sum, tuple, type, etc.
The meaning of syntax and semantics
Give me a syntax error and a semantic error
What is the grammar of code and the meaning of code
A for loop code block for reversing a sequence without usage of ANY methods
What is ...
ans = []
for element in sequence:
ans = [element] + ans
The value and datatype of: (-2**2 + 3 * 3)/2 + (not False or True and True)
What is 3.5 and float?
The comprehension format for when we want to use an if, an elif, and an else
What is ...
[x1 if conditional1 else x2 if conditional2 else x3]
The function signature for a function that
(1) has a list parameter ll
(2) has a step parameter that is an integer, if none is given assume step is 1
(3) an args parameter which collects excess input data
(4) a kwargs parameter which collects all excess input data that is attached to a variable
What is ...
def func(ll, step=1, *args, **kwargs)
In a game of blackjack, given player1_score, player2_score, player1_stand (bool), player2_stand (bool), deck_isempty (bool), the conditional for the while loop that decides if the game continues or if a winner has to be declared
What is ...
while player1_score < 22 and player2_score < 22 and not (player1_stand and player2_stand) and not deck_isempty:
(True and not False) or (not (False or (not True and (False or True))) and (True or not (False and True))) and (not (False or (not (True and False) and True)) or (False and True) or (not False and True))
What is True?
Disclaimer, this is very unlikely and the point is to keep tabs on progress and to take things one at a time (ie. one bracket at a time)
The comprehension expression for returning all possible pair combinations of a list of numbers ll, plus the reason an expression for all unique pairings can't be done
What is ...
[[x,y] for x in ll for y in ll]
Unique cannot be done since you cannot check if pairing is already in the datastructure since it's not generated piece by piece, it's generated as a whole
Write a function that accepts an input ll filled with numbers and returns the mean, median, and variance
Mean is the average
Median is the middle number in a sorted sequence of numbers (assume odd length list)
Variance is (num-mean)^2 for all num in ll and all of it divided by length-1
What is ...
def func(ll):
ll.sort()
mean = sum(ll)/len(ll)
median = ll[len(ll)//2]