webinar-exam-review-2022-12-10

# Exam Review Dec 10 2022
# We're limited to 90 minutes today :(

# LABS
# Ch 2-14... all Labs!
# Ch 21-34 just ADDITIONAL LABS, but important practice!
# Use Submit Mode!!!

# Watch your string input and output
# 1
# myVar = input().strip()

# # 2
# print("some stuff", end=" ") # if you ever override end...
# print() # print(end="\n")

# print("Clean new line!")

# 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
# operators
# = # assignment
# == # "equality operator"... asking as a comparison
# +
# -
# *
# /
# % # modulo, int remainder... "how many left over?"
# // #  floor division... x//y -> math.floor(x/y), similar to int(x/y)
# <
# >
# <=
# >=
# += # x+=1 -> x = x+1
# -=
# != # not equal
# ** # raising to a power, similar to math.pow()
# # keywords
# in # if _someValue_ in _someContainer_
# not # if not _someValue_ in _someContainer_
# and
# or # any one True means whole condition is True... limit OR to 2 conditions

# Common Data Types
# int
# float
# str # ""
# list # []
# set # {}, all unique values, no order
# tuple # (), immutable... Python sees x,y,z as (x,y,z)... return x,y -> return (x,y)
# dict # {key:value}... myList[i]...

# myDict[key] = value
# myDict.update({key:value, key:value})

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

# FUNCTIONS
# defining/writing vs calling
# parameters are special "variables"... they don't work like "regular" variables
# parameters vs arguments
# a function has ONE particular job
# return vs print()... writes a file... whatever the question says
# method are functions that belong to a particular type/class

# def someFunction(x, y):
#     return x + y
#
# if __name__ == "__main__":
#     myNum = int(input())
#     myOtherNum = int(input())
#     num = someFunction(myNum, myOtherNum)
#     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()
# range()
# list()
# str()
# int()
# float()
# dict()
# tuple()
# set() # list(set(myList))
# len()
# min()
# max()
# sum()
# type()
# myVar = "hey"
# myType = type(myVar)
# print(type(myVar).__name__)# print(myType.__name__)
# round() # but its cousins math.ceil() and math.floor() are in the math
# open() # IO/file .read(), .readlines(), .write()

# reversed() # return reversed list... compare to list.reverse() does not return
# sorted() # return sorted list... compare to list.sort() does not return

# help(str)
# print(dir(str))
# help(str.isspace)

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

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

# STRING METHODS
# "stuff I want to put together {}".format(var) # or similar f strings
# myString.strip() # input().strip()
# myString.split() # returns a list of smaller strings
# ",".join(listOfStrings)
# myString.replace(oldSubStr, newSubStr) # remove... myString.replace(subStr, "")
# myString.find(subStr) # returns int index, or -1
# myString.count(subStr) # return int count of num occurrences
# case: myString.lower(), myString.upper(), myString.title()
# is/Boolean: isupper(), islower(), isalpha(), isdigit(), isalnum(), isspace()

# 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 mods
# myList.count(item) # returns number
# myList.sort()
# myList.reverse()
# # also rans
# myList.clear()
# myList.copy()
# myList.index(item)


# And we're out of time today!
# So we didn't get to cover dictionaries and dict methods, modules and the syntax of import statements, or working with FILES!
# We'll have time to finish the whole review next weekend 12/17/22...

# Until then, for my whole Exam Review example code see
# https://pastebin.com/VcxsAicR