webinar-python-exam-review-v4-2021-10-31

# Exam Review 2021 Oct 31

# LABS
# Ch 3-13
# Ch 14-18 not as important
# Ch 19-30 just LABS, but important practice!

# Look at ALL requirements of a question
# CODE must be reusable
# don't be afraid of Submit for Grading...
# different TEST CASES are part of the problem

# Comp 1 Basic syntax and knowledge: operators, data types, etc
# DATA TYPES
# numeric types: int and float
# strings... str
# lists
# dictionaries... dict
# set... no order (which means no indices, no slices), all unique values
# tuple... immutable
# MODULES
# math

# OPERATORS
# +
# -
# *
# /
# % # modulo... gets the INT remainder, how many whole things didn't fit?
# // # floor division
# How many weeks and days is 41 days?
# print(41//7) # gets the weeks
# print(41%7) # gets the days leftover
# ** # can also do with math.pow()
# = # assignment
# == # comparison, the "equality operator"
# !=
# <
# >
# <=
# >=
# +=
# -=
# KEYWORDS that are used like OPERATORS
# not
# in # if someItem in someList, if not someItem in someList
# and
# or

# Comp 2: Control Flow Structurs
# IF... if, if/else, if/elif/else
# LOOPS...
# WHILE - like an IF that repeats as long as the condition stays True
# FOR - doing a known number of times or doing some once for every ITEM in a CONTAINER
# for someItem in someContainer:
# for item in myList:
# for char in myString:
# for i in range(someNum):
# for i in range(len(someList)): # i for the index, someList[i] for the value
# FUNCTIONS
# defining vs calling a function
# parameters vs "regular" or "outside" variables
# def myFunction(x, end="\n"):
# return vs print(), etc
# understand that methods are themselves functions

# ADVANCED CONTROL FLOW
# Ch 10: try/except
# Ch 13: classes

# How many lines or separate strings are in the data input window?
# print(input())
# print(input())

# BUILT-IN FUNCTIONS
# help()
# dir() # print(dir(str)), print(dir(list))
# input()
# print()
# range()
# enumerate()
# len()
# sum()
# min()
# max()
# sorted() # compare to list.sort()
# reversed() # compare to list.reverse()
# int()
# float()
# list() # []
# set()
# tuple() # ()
# dict() # {}
# type() # print(type(5)) --> <class 'int'>

# Use help() and dir()!
# help(list)
# help(str)
# print(dir(list))
# import math
# for item in dir(math):
#     if not item.startswith("_"):
#         print(item)

scoobiesDCT = {
    "Scooby": "a blue collar",
    "Shaggy": "green",
    "Velma": "orange",
    "Daphne": "purple",
    "Fred": "an ascot"
}

# DICTIONARY looping
# for key in scoobiesDCT:
#     # key: value
#     print("{}: {}".format(key, scoobiesDCT[key])) # dictName[someKey]
# for key, value in scoobiesDCT.items():
#     print("{}--> {}".format(key, value))

# STRINGS
# 4 ways to build strings
# + # concatenation "this string" + " this string " + str(4)
# string modulo # "%f" % (3.14)
# "{} is a variable".format(myVar)
# f"{myVar} is a variable"
# import math
# print("Pi to 5 places is {:.5f}".format(math.pi)) # <-- float precision

# SLICES
myString = "hey there"
# # myString[start:stop:step]
# print(myString[::-1]) # yeh

# STRING METHODS
# myString.split() # myString.split("\n")
# " ".join(someList)
# myString.format()
# myString.replace(oldSubStr, newSubStr)
# myString.upper() # myString.lower() and other case methods
# myString.isupper() # and other is? methods, that return a Boolean
# myString.count()

# LISTS
# myList.append()
# myList.extend(anotherList)
# myList.insert(index, item)
# myList.count()
# myList.pop() # by index
# myList.remove() # by value
# myList.sort() # myList(reverse=True)
# myList.reverse()

# SETS
# mySet.add()
# mySet.remove() # by value
# mySet.discard() # by value
# mySet.pop() # set pop() takes out a random value

# Comp 3
# opening FILES
# good practice here will be Ch 12 Task 4, 7, 8
f = open(filename, "r")
contents = f.read()
f.close()
# or
with open(filename, "r"):
    contents = f.read()


# Lab 20.2, 23.6, 12.8

# Lab 20.2 unit conversion by 3's: hours, minutes, and seconds
# whew 3 units instead of 2!
# remember // to get the larger unit, % to get the smaller (original unit) left over
# focus on the largest unit and the smallest, then figure out the middle
total = int(input()) # 4000, 0, etc
hours = total // (60*60) # round down to get last full hour value, after (60*60) or 3600 seconds
min= (total % 3600)//60 # do this last
sec= total % 60 # smallest unit num left almost always simple mod operation
print("Hours: {}".format(hours))
print("Minutes: {}".format(min))
print("Seconds: {}".format(sec))


# Lab 23.6... we don't know when the negative number is coming. So how
# many calls to input()? Use a loop:
value = 0
numsList = []
while value >= 0: # this will keep us going until we see the -1
    value = int(input()) # if we're still going, I'm still grabbing inputs
    numsList.append(value)
print(max(numsList))


# Lab 12.8 with a word list file
filename = input()
startWord = input()
stopWord = input()

with open(filename, "r") as f:
    outputList = f.readlines()

    for item in outputList:
        item = item.strip("\n")
        if item >= startWord and item <= stopWord:
            print(item)