webinar-for-loops-2021-03-13

# for loops

# We use loops to repeat actions
# a WHILE loop is basically an IF statement
# that repeats as long as its condition is true

# a FOR loop is more for repeating something a known
# number of times, or doing something ONCE PER ITEM
# in some iterable container: list, string, etc

# basic syntax of a FOR loop with a list
myList = ["Gilligan", "Scooby", "Agent Scully"] # tv characters
for item in myList:
    print(item)

# or a tuple
myTuple = ("Gilligan", "Castaway002", "red", "crew") # things about Gilligan
for item in myTuple:
    print(item)

# or a string, I'm only changing the loop variable name
myString = "Just sit right back and we'll talk about Gilligan and company."
# for char in myString:
#     print(char)

# Note that looping over sets is exactly the same as those
# ... even though sets have no order and thus no indexes,
# you can still loop over them!


scoobies = {
    "Scooby": "a blue collar",
    "Shaggy": "green",
    "Velma": "orange",
    "Daphne": "purple",
    "Fred": "an ascot"
}
# 2 ways to iterate over a dictionary
for key in scoobies:
    # dictionaryName[key]
    # myList[0]
    print(key, "-", scoobies[key])

for key, value in scoobies.items():
    print(key, "--", value)

for i, item in enumerate(myList):
    print(i, item)

for i in range(0, 5): # simply to repeat a number of times
    print(i)

for i in range(len(myList)):
    print(i, "---", myList[i])

# Complete the function to return the number of upper case letters in the given string
def countUpper(mystring):
    # pass
    # string method isupper()
    count = 0
    for char in mystring:
        if char.isupper():
            count += 1
    return count

print(countUpper('Welcome to WGU')) # 4
print(countUpper('Hello Mary')) # 2