webinar-python-exam-review-2022-06-18

# Exam Review 2022 June 18

# LABS
# Ch 2-14... all Labs!
# Ch 21-31 just ADDITIONAL LABS, but important practice!
# Use Submit Mode!!!

# Watch your string input and output
# # 1
# myVar = input().strip() # myVar = input().rstrip()
# # 2
# print("some stuff", end=" ") # if you ever override end
# print() # print(end="\n")

# Comp 1: Basic syntax and knowledge: operators, data types, etc
# Comp 2: Control Flow
# Comp 3: Modules and Files

# Comp 1: Basic syntax and knowledge: operators, data types, etc
# Data Types
# str
# int
# float
# list
# dict
# tuple # immutable, any series x, y, z -> interpreted as a tuple, return x, y -> return (x,y)
# sets # all unique/no duplicates, no order -> no index, no slicing

# operators
# = # assigning a value
# == # asking, "equality operator"... use in conditional
# +
# -
# *
# /
# % # modulo... whole number remainder, "How many whole things are left over?"
# // # floor division... int(x/y) or really like math.floor(x,y)
# <
# >
# <=
# >=
# !=
# += # increment... x += 1 same as x = x + 1
# -=
# ** # raise to power... similar to math.pow()
# # # keywords used like operators
# in # if __ in __
# not # if not __ in __
# and
# or # any one True means whole condition True... limit OR to 2 conditions

# Comp 2
# Basic control structures
# IF statements... if, if/else, if/elif, if/elif/else, etc
# LOOPS
# WHILE - an IF that repeats
# FOR - looping over some container, or a known number of times (range())
# for __ in __:
# for item in myList:
# for n in range(0, 5): # [0, 1, 2, 3, 4]
# for i in range(len(myList)): # i for the index, myList[i] for the value
# for k in myDictionary: # value for the key is myDictionary[k]

# FUNCTIONS
# defining/writing vs calling
# parameters vs outside or "regular" variables
# parameters vs arguments
# a good function has ONE job, modular
# return vs print()... # do whichever the question
# methods are functions that belong to a type/class

# def someFunction(x, y):
#     return x + y
#
# if "__name__" == "__main__":  # am I running from this particular file that I'm writing?
#     myInput = int(input().strip())
#     num = someFunction(myInput, someOtherNum)
#     print(num)

# See "tasks" in the last section of Ch 10, 11, 13, 14 for function writing practice
# CodingBat also has good function-based Python questions:
# https://codingbat.com/python

# BUILT-IN FUNCTIONS
# print()
# input()
# len()
# sum()
# min()
# max()
# range()
# str()
# list()
# dict()
# tuple()
# set()
# sorted() # compare to list.sort()
# reversed() # compare to list.reverse()
# enumerate()
# round() # cousins math.ceil(), math.floor()
# open() # IO/file methods: .read(), .readlines(), .write()
#
# help()
# dir()
# help(str)
# print(dir(str))
# help(str.isspace)
# for item in dir(str):
#     if not item.startswith("_"):
#         print("{}()".format(item))

# STRINGS
# be able to slice like it's 2nd nature... myString[start:stop:step]
# myString = "abc"
# myRevString = myString[::-1]
# print(myRevString)

# KNOW YOUR WHITESPACE
# # " " # ... and a lot of other Unicode spaces
# # "\n"
# # "\r"
# # "\b"
# # "\t"
# # "\f"

# # STRING METHODS
# myString.format()
# myString.strip() # myString.rstrip()
# myString.split() # returns a list of smaller string
# ",".join(someListOfStrings)
# myString.replace(oldSubStr, newSubStr) # remove... myString.replace(oldSubStr, "")
# myString.find(subStr) # return index of first occurrences, compare myString.index()
# myString.count(subStr) # return int number of occurrences
# # is/Boolean methods: isupper(), islower(), isdigit(), isnumeric(), isspace(), isalphanum()
#
# # LISTS
# # again be able to slice
#
# # LIST METHODS
# # +
# myList.append(item)
# myList.insert(i, item)
# myList.extend(anotherList)
# # -
# myList.pop() # myList.pop(i), pop by index...
# myList.remove(item) # remove by value...
# # other
# myList.count(item)
# myList.sort()
# myList.reverse()
# # not as important
# myList.index() # be careful, could be in there more than once
# myList.copy()
# myList.clear()

# DICT
# # # use the key like an index
# # # you can use the dict KEY to get its VALUE
# myDict[key] # retrieve the value for that key
# myDict[key] = new value
# myDict.items() # for k, v in myDict.items()
# myDict.keys()
# myDict.values()

# SETS
# mySet.add()
# mySet.remove(item) # by value
# mySet.pop() # removes a random item

# MODULES
# # MATH MODULE
# import math
# math.factorial(x)
# math.ceil(x.yz)
# math.floor(x.yz)
# math.pow(x, y) # similar to **
# math.sqrt(x)
# math.fabs() # abs()
# math.e
# math.pi

# different import types
# full import: math.factorial()
# partial import:
# from math import factorial
# --> factorial()
# from math import factorial, sqrt
# from math import *
# aliased imports
# import math as m --> m.factorial()


# # OPENING FILES
#  good practice in Ch 14 Task 4, 7, 8

# with open("filename.txt", "r") as f:
#     # grab contents and get out of the open block
#     contents = f.read() # whole file as one big string
#     contents = f.readlines() # a list of line by line strings

with open("test.txt", "r") as f:
    contents = f.readlines()
# print(contents)
# for line in contents:
#     line = line.strip()
#     print(line) # print(line, end="\n")

with open("mock_data.csv", "r") as f:
    # contents = f.readlines() # ["1,Flossie,Levey...\n"...]

    import csv
    contents = list(csv.reader(f)) # csv.reader(f, delimiter="\t")
    # does one more step for us...
    # ['1', 'Flossie', 'Levey', 'flevey0@jimdo.com', '129.134.226.30']
    print(contents)

with open("mock_data2.csv", "w") as f2:
    for line in contents:
        if line[3].endswith(".org"): # if line[3][-4] == ".org"
            f2.write("{}\n".format(",".join(line)))

# Student Questions
# Seats (or columns) within rows in a room is a good use case for nested loops...
rows = 5
seats = 10 # "columns" within the rows
for row in range(0, rows):
    for seat in range(0, seats):
        print("{}-{}".format(row, seat))


# The Simon Says game in Ch 6.10 is a good example where
# you might THINK it needs a nested loop... but it doesn't!
'''
"Simon Says" is a memory game where "Simon" outputs a sequence of 10 characters (R, G, B, Y) and the user must repeat the sequence. Create a for loop that compares each character of the two strings. For each matching character, add one point to user_score. Upon a mismatch, end the loop.

Sample output with inputs: 'RRGBRYYBGY' 'RRGBBRYBGY'
'''
user_score = 0
simon_pattern = "RRGBRYYBGY" #input()
user_pattern  = "RRGBBRYBGY" # input()

''' Your solution goes here '''
# NOT a nested loop! We don't need to compare all the values, just corresponding ones
for i in range(len(simon_pattern)):
    if simon_pattern[i] == user_pattern[i]:
        user_score += 1
    else:
        break
print('User score:', user_score)