webinar-for-loops-v4-2021-10-2

# WEBINAR: 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

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

myList = ["Agent Scully", "Agent Mulder", "Walter Skinner", "CSM", "Mr. X"]

for item in myList:
    # print("The truth is out there, {}!".format(item)) # string.format()
    # BTW you'll see F STRING formatting in the new book and Pre
    # It's very similar to string.format(), just more condensed...
    print(f"The truth is still out there, {item}!")

# Student questions
#Lab 26.3.1
# input
user_input = "automobile car   manufacturer maker   children kids"
user_sentence = "The automobile manufacturer recommends car seats for children if the automobile doesn't already have one."


''' Type your code here. '''
# help(str.replace)
# for item in dir(list):
#     print(item)
word_pairs = {}
# grab the words to replace
tokens = user_input.split()

# fill word pairs dict
for i in range(0, len(tokens), 2):
    # word_pairs[key] = value
    word_pairs[tokens[i]] = tokens[i+1]
# print(f"dictionary: {word_pairs}") # it looks good!

# You could... loop over dict to do our string replacement
# for k,v in word_pairs.items():
#   user_sentence = user_sentence.replace(k, v)

# an alternate way...
# Loop over the sentence as a list of string instead, checking dict keys as you go:
for word in user_sentence.split():  #
    if word in word_pairs:
        user_sentence = user_sentence.replace(word, word_pairs[word])

# check string out
print(user_sentence)


# find day of the week from a specified date
import datetime
dd = datetime.datetime(1971, 3, 3) # what day of the week?
for item in dir(datetime.datetime):
    if not item.startswith("_"):
        print(item)
help(datetime.datetime.weekday)
print(dd.weekday()) # day is 2... OK, which day is 2?
import calendar
print(calendar.day_name[dd.weekday()])