webinar-exam-review-2023-05-18

# Exam Review 2024 May 18

# 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!

# When you've gotten the Ch 33-34 Prac Tests to 100, go back and do each again.
# This time, try to think of 2-3 more unit tests that could be run on each question.

# 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

# 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 duplicate values, 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()

# # Operators
# = # assigns a value
# == # asking a question... result in Boolean value
# +
# -
# *
# /
# % modulo... whole number remainder... "how many things didn't fit since the last even division?"
# // floor division... last even division
# <
# >
# <=
# >=
# += # x += 1 ... x = x + 1
# -=
# ** # similar to pow() and math.pow()
# !=
# # keywords
# in # membership check... if x in myList
# not # if not x in myList
# and
# or # any one True would cause the combo to be True... limit OR to 2-3 conditions

# 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 actions a known number of times --> once for everything in the container
# FOR in Python is explicitly about looping over a container
# # Check out my For Loops webinar in The Gotchas
# for ___ in _someContainer_:
# for item in myList:
# for char in myStr:
# for key in myDict: # loop var holds the key, myDict[key] holds the value
# for n in range(0, someNum): # if you thought of range(5) as being [0, 1, 2, 3, 4]
# for i in range(0, len(myList)):
# for i, item in enumerate(myList):

# FUNCTIONS
# defining/writing a function vs calling
# modular... a function has ONE specific 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 + y
#
# if __name__ == "__main__": # is this script the one that's running?
#     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()
# min()
# max()
# sum()
# str()
# list()
# dict()
# set()
# range()
# enumerate()
# round() # cousins math.ceil(), math.floor()
# type() # myVar = "4.3", print(type(myVar).__name__) --> str
# pow()
# abs() # cousin math.fabs()
# open()
# help() # # help(str), help(str.isspace)
# dir() # print(dir(str))

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

# KNOW YOUR WHITESPACE
# " " # space from spacebar
# # a lot of other Unicode spaces
# "\n" # new line return
# "\t" # tab
# "\r" # carriage return

# unless otherwise stated... printed output should end a new line return...
# 99% of the time it already does
# print("hey") --> print("hey", end="\n")
# we only need to change that when...
#1 ... this specific says to do something else
#2 ... you yourself overrode the end parameter of print() as the last thing you did... just call print() again after the loop

# STRING METHODS
# myStr.format() # "Stuff I want to put into this string like {} and {:.2f}".format(var1, var2)
# myStr.strip() # input().strip()
# myStr.split() # returns a list of smaller strings
# myStr.join(listOfStrings) # " ".join(listOfStrings)
# myStr.replace(subStr, newStr) # "remove" myStr = myStr.replace(subStr, "")
# myStr.index(subStr) # return int index where found, or raise error
# myStr.find(subStr) # return int index where found, or return -1
# myStr.count(subStr) # returns int of times subStr occurs
# 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) # pop() by index
# myList.remove(item) # remove() by value
# myList.clear()
# # other
# myList.sort()
# myList.reverse()
# myList.count(item) # returns int num of occurrences
# myList.index(item)
# myList.copy()

# DICT
# use the key like an index []... then you don't really need DICT methods
# myDict[key] # get the value for that key
# myDict[key] = value # assigns new value to that key

# membership check
# if ___ in myDict: # looking at keys

# DICT METHODS
# myDict.keys() # all dict keys in one set-like object
# myDict.values() # all dict values in one object

# MODULES
# math and csv

# MATH MODULES
# 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 ceil # just ceil() not math.ceil()
# from math import sqrt, fabs # just sqrt(), fabs()
# from math import * # factorial(), floor(), etc no math.
#
# # ALIAS IMPORT
# import math as m # m.floor(), m.ceil()

# FILES
# modes: r, w, a

# READ MODE
# f = open(filename)
with open("plain_text_file.txt", "r") as f:
    # f.read() # returns the whole file as one big string
    # f.readlines() # returns a list of strings, each line is one string
    # f.write(someStr) # writes a single str arg to file
    contents = f.readlines()
# print(contents)

# reading with csv module
import csv
# csv.reader()

with open("mock_data.csv", "r") as f1: # mockaroo.com
    # for row in csv.reader(f1):
    contents = list(csv.reader(f1)) # csv.reader(f1, delimiter="\t") for .tsv
# print(contents)
# for row in contents[:10]:
#     print(row)

# WRITE MODE
# write out a new file where all the last names begin with "Mc"
with open("output_data38.csv", "w") as f2:
    for row in contents:
        # ['5', 'Carling', 'Baude', 'cbaude4@liveinternet.ru', 'Male', '91.198.36.54']
        # last name is row[2]
        if row[2].startswith("Mc"):
            f2.write(",".join(row) + "\n")

# APPEND MODE
# reading it to see...
# with open("append_to_this.txt") as f3:
#     print(f3.readlines())
with open("append_to_this.txt", "a") as f3:
    f3.write("\nPippin")