webinar-for-loops-2023-01-07

# 2023 Jan 7

# WEBINAR: For Loops
# We use loops to repeat actions

# a WHILE loop... btw.. is basically an IF statement
# that repeats as long as its condition is true

# FOR LOOPS are used for repeating actions for every element
# in a container like a list, string, tuple, etc...

# Basic syntax of a for loop
# for _something_ 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) # a lot of returns!
    print(char, end="")
print() # print(end="\n")
# print("A clean new line!") # and comment out or delete after!

# dictionaries
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"
}
# myDict[key] # retrieve the value for that key... similar to dict method .get()
# myDict[key] = value # assign a new value to that key

for key in bestOfXF: # for key in nameOfDict:
    # print("Check out Episode {} or {}".format(key, bestOfXF[key]))
    # print("Check out Episode {} or {}".format(key, bestOfXF.get(key)))
    value = bestOfXF[key]
    print("Check out Episode {} or {}".format(key, value))

# print(bestOfXF.items())
# x, y = [1, 3.14]
# print(y)
for k, v in bestOfXF.items():
    print("Check out Episode {} or {}".format(k, v))


# myDict[key] is like myList[num]
# print(myList[0]) # retrieving a value for an index position in a list is similar to retrieving a dictionary value associated with a key

# range()
for num in range(0, 5): # [0, 1, 2, 3, 4]
    print(num)

# range() of len()
for i in range(0, len(myList)):
    print("{} - {}".format(i, myList[i]))


# Student questions...


# Lab 25.3
# This is more of a while loop situation, and a great example of the kind of thing I'll go over next week in my Input Patterns webinar
'''
Write a program that reads a list of integers into a list as long as the integers are greater than zero, then outputs the smallest and largest integers in the list.

Ex: If the input is:

10
5
3
21
2
-6
the output is:

2 and 21
You can assume that the list of integers will have at least 2 values.
'''
myInput = int(input())
numList = []
while myInput > 0: # another common sentinel value condition is while myInput != "-1":
    numList.append(myInput)
    myInput = int(input())
# print("numList is: {}".format(numList)) # see? Looks like what we need, right?
theMax = max(numList)
theMin = min(numList)
print("{} and {}".format(theMin, theMax))