webinar-python-exam-review-2022-01-29

# Exam Review 2022 Jan 29

# LABS
# Ch 3-13
# Ch 14-18 not as important, other than some good labs in Ch 15
# Ch 19-30 just LABS, but important practice!
# Use Submit Mode!!!

# Comp 1 Basic syntax and knowledge: operators, data types, etc
# Comp 2: Control Flow Structures
# Basic: if statements, loops, functions
# Adv: try/except and raising errors, classes
# Comp 3: modules, working with files

# Comp 1 Basic syntax and knowledge: operators, data types, etc
# DATA TYPES
# int
# float
# str # ""
# list # [ ]
# dict # {key: value}
# tuple # ( ) # function return "more than one value"
# set # { }
# # MODULES
# math
# csv # often basic filestream methods read(), readlines(), write()

# OPERATORS
# +
# -
# *
# /
# %  # modulo - whole number remainder, "how many whole things didn't fit?"
# // # floor division, truncates division down to whole number
# = # assignment
# == # equality operator, asking/comparing as a condition: if, elif, while
# += # increment
# -= # decrement
# >
# <
# >=
# <=
# ** # raise to power, compare to math.pow()
# !=
# keywords we use like operators
# NOT # w IN... if myString not in myList, if not myString in myList
# IN
# AND
# OR
# DEF
# DEL

# Comp 2: Control Flow Structures
# Basic...
# IF statements... if, if/else, if/elif/else
# LOOPS...
# WHILE LOOP - if that repeats, more "general"
# FOR LOOP - looping over a CONTAINER
# for __ in __:
# for item in myList:
# for i in range(len(myList)): # myList[i]
# for key in myDictionary: # myDictionary[key]
# myDictionary[key] = value
# if key in myDictionary:

# FUNCTIONS
# defining/writing vs calling
# parameter/arguments vs "regular"/"outside" variables... miles_per_gallon, mpg
# return vs print() # do whatever it asks...
# a function has A JOB
# understand built-in functions and class methods...
#  are functions: str .split(), list .append(), print(), sum()

# ADV control structures
# Ch 10: try/except... read 10.3 and Lab 10.7
# Ch 13: classes... Lab 13.13

# first in Ch 7.18... and after Ch 11
# def someFunction():
    # do some stuff
# if  =__name__ "__main__":
    # myVar = input()
    # myOutput = someFunction(myVar)
    # print(myOutput)

# BUILT-IN FUNCTIONS
# print()
# input() # returns a str
# int()
# float()
# str()
# list()
# tuple()
# set()
# dict()
# len() # very useful!
# sum()
# min()
# max()
# round() # cousins in the math module: math.floor() and math.ceil()
# range()
# help()
# dir()
# type(myString) # <class str>
# isinstance(object, type) # isinstance(myString, str)... True


# Using help() and dir()... yes you can in OA!
# help(str)
# print(dir(str))
# for item in dir(str):
#     if not item.startswith("_"):
#         print(item)
# help(str.count)

# STRINGS
# SLICES for strings and list
# myString[start:stop] # myString[start:stop:step]

# Build up larger strings with str.format() or f strings
# other ways that aren't as good
# CONCATENATION... "this string" + "another string"
# STRING MODULO... print("%s added in this string" % myString)
# string.format()
# "{} is a variable".format(myVar)
# f string
# f"{myVar} is a variable"

# STRING METHODS
# myString.format()
# myString.split() # makes a list of strings out of a longer string
# " ".join(myListOfStrings)
# myString.strip() and myString.rstrip()
# myString.replace(someStr, newStr) # myString.replace(someStr, "")
# myString.upper() # .lower(), .title(), .capitalize()
# myString.isupper() # is___() returns Boolean
# myString.count(someStr)

# 2 main sources of print output problems
# userInput = input().rstrip() # get rid of extra whitespace: " ", "\n", "\r", "\t"
# read() or readlines()

# DON'T LEAVE THE CURSOR HANGING ON A LINE
# if you ever use the end parameter of print()...
# for item in myList:
#     print(item, end=" ")
# print()
#
# # LIST METHODS
# # myList.append(item)
# # myList.insert(i, item)
# # myList.extend(anotherList) # merges another list, item by item
# # myList.pop() # by index, by default -1
# # myList.remove(item) # by value
# # myList.sort() # myList.sort(reverse=True)
# # myList.reverse() # compare to built-ins reversed() and sorted()
# # myList.count(item)
#
# # DICTIONARY
# # myDictionary[key] # retrieves the value
# # myDictionary[key] = value # assign a value for the key
# # if __ in myDictionary: # it's checking the keys
#
# # MATH
# # import math # full import... math.ceil()
# # # from math import ceil # partial import... ceil() not math.ceil()
# # math.factorial()
# # math.pow() # same as **
# # math.sqrt()
# # math.floor()
# # math.ceil() # regular round() is a built-in
# # math.e
# # math.pi
#
# # Comp 3: modules, working with files
# # full, normal import
# # import wholeModule
# # wholeModule.thisMethod()
# # math.floor()
# # # partial import
# # from wholeModule import thisMethod
# # thisMethod() # not wholeModule.thisMethod()
# # # aliased import
# # import wholeModule as mm
# # mm.thisMethod()
#
# # OPENING FILES
# # good practice: Ch 12 Task 4, 7, 8
#
# with open(filename, "r") as f:
#     contents = f.read() # whole file as a big string
#     contents = f.readlines() # returns a list of line by line strings
#
# # # write back out
# with open(filename, "w") as f:
#     f.write("my string")

# mock_data.csv
# import csv # I kinda ignore this....
with open("mock_data.csv", "r") as f:
    # print(f.read())
    # print(f.readlines())
    for line in f.readlines(): # line is holding a string
        line = line.strip()
        # print(line)# print(line, end="\n")
        lineList = line.split(",")
        print(lineList[4])


# question on Lab 26.14 and output formatting