webinar-exam-review-2024-01-27

# Exam Review 2024 Jan 27

# Do those LABS
# Ch 2-14... all Labs!
# Ch 21-32 just ADDITIONAL LABS, but important practice!
# get to know the Prac Tests, Ch 33 and 34... more than the Pre

# Use Submit Mode and get them to 100%!!!
# PAY ATTENTION to the unit tests!
# ... then UNIT TEST more! Unit test, unit test, unit test!

# 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
# = # assigns a value
# == # asking a question
# +
# -
# *
# /
# % # modulo... whole number remainder... "how many whole things didn't fit since the last even division"
# // # floor division... last even division
# <
# >
# <=
# >=
# += # x+=1 --> x = x+1
# -=
# ** # compare to pow(), math.pow()
# !=
# # keywords
# # in # if x in myList:
# not # if not x in myList:
# and
# or # any one True means the combo is True... limit OR to 2-3 conditions

# Data Types/Classes
# int
# float
# bool # True, False
# str # ""
# list # [ ]
# dict # {key: value}
# tuple # ( ) immutable, Python sees a,b,c as (a,b,c) --> return x,y --> return (x,y)
# set # no duplicates, no order --> no indices, can't slice it, can't sort it, can't reverse
# range # range()... container of consecutive numbers
# file # open()... f.read(), f.readlines(), f.write()

# Comp 2
# Control Flow! The how and when of our programs
# IF statements...  if, if/else, if/elif, if/elif/else
# LOOPS
# WHILE - a general purpose loop, an IF that repeats
# FOR - repeating action once for everything in a container
# # Check out my For Loops webinar in The Gotchas
# for ___ in __someContainer__:
# for item in myList:
# for char in myString:
# for key in myDict:
# for num in range():
# for i in range(len(myList)): # for i in range(0, len(myList), 1)... "item" is myList[i]
# for i, item in enumerate(myList):

# FUNCTIONS
# defining/writing a function vs calling
# modular... a function has ONE job
# print/output or return (or maybe something else)
# parameters are special variables for holding stuff coming into the function
# parameters vs arguments

# def someFunction(x, y):
#     return x + (2*y)
#
# if __name__ == "__main__": # is this script the one that's running now
#     # inside this block we're answering this specific question
#     input1 = int(input())
#     input2 = int(input())
#     myNum = someFunction(input1, input2)
#     print(myNum)

# 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
# input()
# print()
# len()
# sum()
# min()
# max()
# range()
# list()
# str()
# dict()
# tuple()
# set()
# enumerate()
# round() # cousins math.ceil() and math.floor()
# type() # print(type(myVar).__name__)
# pow() # compare math.pow()
# abs() # compare to math.fabs()
# open() # for file objects
# help() # help(str), help(str.isspace)
# dir() # print(dir(str))

# STRINGS
# be able to refer to indices, and slice
# myStr = "abcdef"
# # # mySlice[start:stop:step]
# # revStr = myStr[::-1]
# # print(revStr)

# KNOW YOUR WHITESPACE
" " # space from spacebar
# a lot of Unicode spaces
"\n" # new line return... print() --> print(end="\n")
"\r" # carriage return... back to beginning of the same line
"\t" # tab

# STRING METHODS
# myStr.format() # "Stuff I want to put together like {:.2f} and {}".format(myVar, myVar2)
# myStr.strip() # input().strip()
# myStr.split() # returns a list of smaller strings
# ",".join(listOfStrings)
# myStr.replace(subStr, newStr) # "remove" myStr = myStr.replace(subStr, "")
# myStr.index(subStr), myStr.find(subStr) # return index where found
# myStr.count(subStr) # return number of times subStr is there
# case: .lower(), .upper(), .title(), .capitalize()
# is/Boolean: .islower(), .isupper(), .isspace(), .isalpha(), .isalnum(), .isnumeric(), .isdigit()
# myStr.startswith(subSTr), myStr.endswith(subStr)

# LISTS
# be able to refer by index and to slice
# LIST METHODS
# +
# myList.append(item)
# myList.insert(i, item)
# myList.extend(anotherList)
# # -
# myList.pop(i) # last one or by index
# myList.remove(item) # pop() by index, remove() by value
# myList.clear()
# # other
# myList.sort()
# myList.reverse()
# myList.count(item)
# myList.copy()
# myList.index(item)

# DICT
# use the key like an index []... then you don't really need DICT methods
# myDict[key] # get the value associated with that key --> takes the place of myDict.get()
# myDict[key] = value # assigns new value to key --> similar to myDict.update({k:v})

# for key in myDict: # value is myDict[key]
# if ___ in myDict: # check to see if a key is there before trying to get its value

# DICT METHODS
# myDict.keys()
# myDict.values()
# myDict.items() # # for k, v in myDict.items()

# MODULES
# math and csv

# MATH MODULE
# import math # FULL IMPORT
# math.factorial(x)
# math.ceil(x)
# math.floor(x)
# math.sqrt(x)
# math.pow(x, y)
# math.fabs(x)
# math.pi
# math.e

# PARTIAL IMPORT
# from math import sqrt # --> sqrt()
# from math import ceil, floor # --> ceil(), floor()
# from math import * # floor(), sqrt()
#
# # ALIAS IMPORT
# import math as m
# # m.floor(), m.fabs()

# FILES
# modes: r, w, a

# READ MODE
# with open("test.txt", "r") as f:
    # f.read() # returns whole file as one big string
    # f.readlines() # returns a list of strings, line by line
    # f.write() # take one str arg and write into file (can't do here bc I'm in read mode)
#     contents = f.readlines()
#
#
# for line in contents:
#     line = line.strip()
#     print(line)
# print(contents)

# CSV module
# import csv # csv.reader()
# with open("mock_data.csv", "r") as f1: # mockaroo.com
#     contents = list(csv.reader(f1)) # # csv.reader(f, delimiter="\t")
# print(contents[0:20]) # I'm slicing because I don't need to see all 1000 rows

# Side question: How to "create a dictionary" from a file?
# ... there's really no such thing. You create a particular dictionary you want from particular data you have.

# Say we want a dictionary like this: myDict = {id: email}
# myDict = {}
# for line in contents[0:10]:
#     # myDict[key] = value
#     myDict[line[0]] = line[3]
# print(myDict)

# k... back to files...

# WRITE MODE
# with open("output_data33.csv", "w") as f2:
#     # write out a file with every row where email ends in ".edu"
#     for row in contents:
#         # email is position 3 of inner list
#         if row[3].endswith(".edu"):
#             f2.write(','.join(row) + "\n")

# APPEND MODE
# with open("append_to_this.txt", "r") as f3:
#     print(f3.readlines())
# with open("append_to_this.txt", "a") as f3:
    # f3.write("\nPippin") # follow suit as needed based on what's in the file









# APPEND MODE