webinar-for-loops-2023-05-03

# 2023 June 3
# WEBINAR: For Loops

# We use loops to repeat actions

# a WHILE loop... is an IF that repeats as long as the loop condition remains True

# FOR LOOPS are used for repeating actions for every element in a container (list, str, tuples, sets, dictionary, range objects)

# Basic syntax of a for loop
# for ___ in _someContainer_:

# list
myList = ["Agent Scully", "Agent Mulder", "Walter Skinner", "CSM", "Mr. X"]
for item in myList:
    print(item) # print(item, end="\n")

# tuples
myTuple = ("Gilligan", "Castaway002", "red", "crew")
for item in myTuple:
    print(item)

# strings
myString = "It was the best of times."
# for char in myString:
#     print(char)


# print(char)
# print(char, end="\n")
for char in myString:
    #print(char) # print(char, end="\n")
    print(char, end="->")
print() # I add this!
print("I wish this was on a clean new line by itself.")

# Ch 2.9 and Lab 2.12

# dictionaries
# myDict = {"key": "value"}
#
# for key in myDict: # loop var in dict for loop holds the KEY
#     myDict[key] # retrieves value for that key
#     myDict[key] = value # assign a (new) value to key
bestOfXF = {
    "1x00": "Pilot",
    "2x10": "Red Museum",
    "2x14": "Die Hand Die Verletzt",
    "3x04": "Clyde Bruckman's Final Repose",
    "3x12": "War of the Coprophages",
    "3x20": "Jose Chung's From Outer Space",
    "4x05": "The Field Where I Died",
    "5x05": "The Post Modern Prometheus",
    "5x17": "All Souls"
}
for key in bestOfXF:
    # "Check out Episode ___ or '___'"
    print("Check out Episode {} or '{}'".format(key, bestOfXF[key])) # value is bestOfXF[key]... myList[0]

# help(str.format)

# range objects... to just to do something X number of times
for num in range(0, 5): # [0, 1, 2, 3, 4]
    print(num)

myList = ["Agent Scully", "Agent Mulder", "Walter Skinner", "CSM", "Mr. X"]
# if I need to know the index, then
# for item in myList: # doesn't help!
for i in range(0, len(myList)):
    print("{}: {}".format(i, myList[i]))

# could also use ENUMERATE
for i, item in enumerate(myList):
    print("{} - {}".format(i, item))

for i in range(0, len(myList)):
    if i < len(myList) - 1:
        print("{} vs ".format(myList[i]), end="")
    else: # must be the last one!
        print(myList[i])

print("I wish this was on a clean new line by itself.")

print(" vs ".join(myList))