webinar-python-exam-review-2021-09-25-NEW

# webinar review 09/25/21 :) First review with our course update, new Pre + OA!

# Ch 8, 9, 11 and 12 end of chapter exercises are critical practice
# Extra labs/ Ch 17-30 are great practice for the content and format of the new OA

# Be able to recognize and use common data types and modules
# DATA TYPES
# int
# float
# str
# list
# dict # key: value, key2: value2
# tuple
# set # all unique, no order
# MODULES
# datetime
# os
# math
# random
# calendar

# OPERATORS
# +
# -
# *
# /
# // # floor division
# % # modulo: gives you the WHOLE number REMAINDER, "How many didn't fit?"
# How mand pounds/ounces is 47 ounces?
# print(47//16) # pounds, and...
# print(47%16) # ounces leftover
# ** # raise to a power, similar to math.pow()
# = # assignment
# == # comparion, asking, for conditions
# += # increment, x += 1 is the same as x = x + 1
# -= # decrement
# != # not =, comparison for conditions
# not
# <
# >
# <=
# >=
# and
# or
# in # if someItem in someList

# CONTROL FLOW STRUCTURES

# IF statements... IF, IF/ELSE, IF/ELIF/ELSE, IF/ELIF/ELIF/ELSE...

# LOOPS
# WHILE - broadly useful, if that repeats
# FOR - repeating something a KNOWN number of times, matched to containers like LISTS
# for __ in ___:
# for item in myList:
# for char in myString:
# for key in myDictionary: key is the key, myDictionary[key] is the value for that key
# for i in range(0, 5):
# for i in range(len(myList)): # i is the index, myList[i] is the value at that index

# FUNCTIONS
# defining vs calling
# parameters/arguments vs "regular" variable
# # def myFunction(myParameter):
# # #   # myParameter = thisList # don't do this
# # # myFunction(oneList)
# # # myFunction(anotherList)
# return vs print() # whichever the questions says
# methods are themselves functions

# IN
myList = ["Agent Scully", "Agent Mulder", "Walter Skinner", "CSM", "Mr. X"]
if "Agent Scully" in myList:
    print("Found her!")
print("Agent Mulder" in myList) # True
print("Agent Spender" in myList) # False

# BUILT-IN FUNCTIONS
# print() # print(end="\n", sep=" ")
# len()
# range()
# sum()
# min()
# max()
# help() # help(str), help(str.count)
# dir() # print(dir(str))
# round() # compare to math.ceil() and math.floor()
# enumerate() # for i, item in enumerate(myList)
# sorted()
# reversed()
# type() # print(type(myList))
# int()
# float()
# list()
# set()
# tuple()
# str()
# dict()

# STRINGS
# be able to slice strings
# build up larger strings
x = "Sue"
greeting = "How do you do?"
# + CONCATENATION
myString = "My name is " + str(x) + ". " + greeting
# DATA CONVERSION SPECIFIERS or "STRING MODULO"
myString = "My name is %s. %s" % (x, greeting)
# the string FORMAT method
myString = "My name is {}. {}".format(x, greeting)
# F STRINGS... similar to string.format() but more condensed:
myString = f"My name is {x}. {greeting}" # <-- You'll see this style on the Pre!
print(myString)

# STRING METHOD
# myString.format()
# myString.split() # turns a long string into a list of small strings
# " ".join(someList) # join a list of strings into a larger string
# myString.upper()
# myString.lower()
# myString.title()
# myString.capitalize()
# myString.isupper()
# myString.islower()
# myString.replace(oldSubString, newSubString)
# myString.find(someSubString)
# myString.count(someSubString)
# myString.strip() # see myString.lstrip(), myString.rstrip()

# LISTS
# be able to slice lists
# myList.append(thing)
# myList.insert(index, thing)
# myList.extend(anotherContainer) # add item by item
# myList.pop() # myList.pop(i) POP by INDEX
# myList.remove(item) # REMOVE by VALUE
# myList.count(item)
# myList.sort() # myList.sort(reverse=False)
# myList.reverse()
# myList.copy()
# myList.clear()
# myList.index(item) # not as reliable as looping with range() or enumerate()

# SET
# mySet = {1, 2, 3}
# mySet.add()
# mySet.remove() # by value, errors if items isn't there
# mySet.discard() # by value, will not error if item isn't there
# mySet.pop() # set pop() takes out a random item

# TUPLES
# so immutable that we're not interested in tuple methods

# MODULES
# MATH
import math
# math.sqrt()
# math.pow() # do not confuse with math.exp()
# math.ceil()
# math.floor()
# math.factorial()
# math.e
# math.pi

# random
# import random
# random.random() # returns a float b/n 0 and 1
# random.choice(someList) # random item in a list
# random.randint(start, stop) # Includes the stop
# random.randrange(start, stop) # Excludes the stop

# calendar
# import calendar
# calendar.isleap(intYear)
# calendar.weekday(y, m, d)
# calendar.day_name[]
# calendar.month_name[]

# datetime
import datetime
# # focus
# # datetime.datetime # <-- contains datetime.date and datetime.time
# # datetime.timedelta
dd = datetime.datetime(1912, 4, 16)
dd = datetime.datetime.today()
print(dd)
print(dd.year)
print(dd.month)
print(dd.day)
print(dd.hour)
# # datetime.timedelta
td = datetime.timedelta(days=15) #
print("15 days from today is {}.".format(dd+td))
print(dir(datetime.timedelta))
print("{} is {} seconds".format(td, td.total_seconds()))

# # os
# import os
# os.getcwd()
# os.listdir()
# # os.path
# os.path.dirname()
# os.path.basename()
# os.path.exists()
# os.path.isfile()
# os.path.isdir()

# # IMPORT STATEMENTS
# # make sure the way the object is referenced matches the import statement
# # "normal" full import
# import datetime # datetime.date.year
# # PARTIAL IMPORTS
# from os import path # path.isdir() not os.path.isdir()
# from math import ceil # ceil() not math.ceil()
# # ALIAS IMPORT
# import math as m # m.ceil() not math.ceil()

# Treat Ch 13 Classes as something to read!

# Good Pre and OA practice in Ch 17 - 30

# See CodingBat www.codingbat.com/python for even more, but focus
# on the ZyBooks material first!