webinar-python-exam-review-2022-02-29

# Exam Review 2022 Feb 19

# LABS
# Ch 3-13
# Ch 14-18 not as important, other than some good labs in Ch 15
# Ch 19-30 just LABS, but important practice!
# Use Submit Mode!!!

# Comp 1: Basic syntax and knowledge: operators, data types, etc
# Comp 2: Control Flow Structures
# Basic: if statements, loops, functions
# Adv: try/except and raising errors, classes
# Comp 3: modules, working with files

# Comp 1 Basic syntax and knowledge: operators, data types, etc
# Data Types
# str
# int
# float
# list
# dict # {k:v}
# set # {1,2,3}, all unique values, have NO ORDER
# tuple # (1,2,3,1) myTuple[0]

# Operators
# +
# -
# /
# *
# //
# % # the whole number remainder, "how many things didn't fit?"
# = # making assignment
# == # equality operator, asking "are these equal?"
# +=
# -=
# ** # raise to power, similar math.pow()
# <
# >
# <=
# >=
# !=
# # keywords used like operators
# not
# in # if item in myList, if not item in myList
# and
# or

# Comp 2: Control Flow Structures
# Basic...
# if statements... if, if/else, if/elif/else
# loops...
# while
# for
# for __ in __:
# for item in myList:
# for i in range(len(myList)) # myList[i]
# for i, item in enumerate(myList)
# for ___ in myDict: myDict[key] --> value
# if __ in someDict: # looks at keys, not the values

# FUNCTIONS
# defining/writing vs calling
# parameters/arguments vs "regular" variables
# a good function has ONE JOB
# understand built-in functions, class methods: input(), len(), str.split(), dict.update()
# can return values (or not)

# def myFunction():
    # do stuff
# if __name__ = "__main__":
#     myVar = input()
#     call myFunction()

# BUILT IN FUNCTIONS
# print()
# input() # returns str... input().rstrip() weed out whitespace: " ",\n,\r,\t,\f
# len()
# sum()
# min()
# max()
# sorted()
# reversed()
# round() # and its cousins: math.ceil(), math.floor()
# range() # and enumerate()
# help()
# dir() # print(dir(str))
# type() # isinstance(myString, str)
# # create/recasting
# int() # int(input()) --> int(input().rstrip())
# float()
# list()
# str()
# tuple()
# dict()

# STRING
# SLICES for strings and list
# myString[start:stop] # myString[start:stop:step]
# slice to reverse... myRevString = myString[::-1]
# STRING METHODS
# myString.format() # or f strings
# myString.rstrip() # or myString.strip(), myString.lstrip()
# myString.split() # returns a list... of string
# " ".join(myListOfStrings)
# myString.replace(oldSubStr, newSubStr)
# myString.count() # there is also list .count()
# myString.splitlines()
# case methods: myString.upper(), myString.lower()
# Boolean methods: myString.isupper(), islower(), isdigit()

# LIST METHODS
# myList.append(item)
# myList.insert(index, item)
# myList.extend(anotherList)
# myList.pop() # myList.pop(index)... pop by index
# myList.remove() # remove by value
# myList.sort() # "modify in place"
# myList.reverse()
# myList.count(item)
# myList.clear()
# myList.index(item)

# # DICTIONARY
# # myDictionary[key] # retrieves the value
# # myDictionary[key] = value # assign a value for the key
# # if __ in myDictionary: # it's checking the keys

# MATH
import math # as opposed to from math import factorial
# math.factorial()
# math.pow() # **
# math.sqrt()
# math.ceil()
# math.floor()
# math.e
# math.pi

# SETs
# mySet.add()
# mySet.pop() # a random value
# mySet.remove()

# while item in myList:
#     myList.remove(item)

# # Comp 3: modules, working with files and modules
# full import
# import math --> math.pow(), math.e
# # partial import
# from math import factorial --> factorial()
# from math import * --> still just factorial()
# # aliased import
# import math as m --> m.pow(), m.factorial()

# # OPENING FILES
# # good practice: Ch 12 Task 4, 7, 8
# The Gotchas: Working with Files: Reading (25 min)
# The Gotchas: Working with Files: Writing (33 min)

# with open(filename, "r") as f:
#     # contents = f.read() # whole file as a big string
#     # contents = f.readlines() # returns a list of line by line strings

# # # write back out
# with open(filename, "w") as f:
#     f.write("my string")

# mock_data.csv
# import csv # I kinda ignore this....
with open("mock_data.csv", "r") as f:
    # print(f.read())
    # print(f.readlines())
    for line in f.readlines():  # line is holding a string
        #print(line, end="")
        line = line.strip()
        # print(line)# print(line, end="\n")
        lineList = line.split(",")
        print(lineList[2])

# The Car Wash dictionary question

services = { 'Air freshener' : 1 , 'Rain repellent': 2, 'Tire shine' : 2, 'Wax' : 3, 'Vacuum' : 5 }
base_wash = 10
total = 0

# trust no input!!!
service_choice1 = input().rstrip()
service_choice2 = input().rstrip()

''' Type your code here '''
total += base_wash
print("ZyCar Wash")
print("Base car wash -- $10")

# don't try to add anything unless you know it's actually in that dictionary!
if service_choice1 in services:
    total += services[service_choice1]  # myDict[key]
    print("{} -- ${}".format(service_choice1, services[service_choice1]))
if service_choice2 in services:
    total += services[service_choice2]  # myDict[key]
    print("{} -- ${}".format(service_choice2, services[service_choice2]))
print("----")
print("Total price: ${}".format(total))