webinar-exam-review-2024-04-20

# Exam Review 2024 Apr 20

# 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,z --> return (x,y,z)
# set # { } no duplicate values, no order --> no indices, can't slice it, can't sort it or 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... the 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 a container: list, etc
# Check out my For Loops webinar in The Gotchas
# for ___ in _someContainer_:
# for item in myList:
# for char in myStr:
# for key in myDict: # for key, value in myDict.items()... or if k is the key, the value for that key is myDict[k]
# for n in range(0, someNum):
# 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()
# float()
# int()
# str()
# range()
# len()
# sum()
# min()
# max()
# type() # myVar = "hi", print(type(myVar).__name__)
# enumerate()
# pow()
# abs() # cousin math.fabs()
# round() cousins math.ceil(), math.floor()
# open()
# help()# help(str), help(str.isspace)
# dir() # print(dir(str))

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

# KNOW YOUR WHITESPACE
" " # space from spacebar
# a lot of other 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 {:formatting instr} and {:.2f} into my string".format(var1, var2)
# myStr.strip()
# myStr.split() # returns a list of smaller strings
# ",".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 -1
# myStr.count(subStr) # return int count of how many times it's there
# case: .lower(), .upper(), .title(), .capitalize()
# is/Boolean: .islower(), .isupper(), .isspace(), .isalpha(), .isnumeric(), .isdigit(), .isalnum()
# 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 num of times it's there
# 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 of that key
# myDict[key] = value # assign a new value to key
#
# # membership check
# # if ___ in myDict: # looking at keys
#
# # DICT METHODS
# myDict.keys() # all dict keys in a set-like object
# myDict.values() # all dict values in a set-like 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, floor # sqrt(), floor()
# from math import * # factorial(), floor(), but no math
#
# # ALIAS IMPORT
# import math as m # m.floor(), m.ceil()

# FILES
# modes: r, w, a

# READ MODE
# filename = input()
# with open(filename, "r") as f:
# 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

# with open("plain_text_file.txt", "r") as f:
#     # contents = f.read()
#     contents = f.readlines()
# # print(contents)
# for line in contents:
#     line = line.strip()
#     print(line)
# print(contents)

import csv
# csv.reader()

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

# WRITE MODE
# write out a new file where all the last names begin with "P"
# with open("output_data37.csv", "w") as f2:
#     for row in contents:
#         # # ['1', 'Remington', 'Shilling', 'rshilling0@wsj.com', 'Male', '1.71.141.52']
#         # last name is row[2]
#         # if row[2].startswith("P") or row[2].startswith("p"):
#         # if row[2][0].lower() == "p":
#         if row[2].lower().startswith("p"):
#             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")

with open("append_to_this.txt") as f3:
    print(f3.readlines())