carly m
Reputation: 57
Python code not achieving correct output?
I have a project due for school that is working except for one part. I have a list with birthdays where I go through each one and get the age, then class them as adult, child, senior or baby/toddler. Toddlers/babies must have at least one adult/senior with them, which I have taken into account near the end of the code. I have a running total and general count for each age group. However, when a baby/toddler is submitted without a parent, I have tried decreasing the counts to eliminate the entry as it isn't valid but at the end it prints out?
import datetime
# import datetime fucntion for use in determining ages
today = datetime.datetime.now()
# set variable for today's current date
thirtyone = ['01', '03', '05', '07', '08', '10', '12']
# distinguish which months have 31 days to validate date
thirty = ['04', '06', '09', '11']
# distinguish which months have 30 days to validate date
adults = 0
# total number of adults for one booking
children = 0
# total number of children for one booking
baby_todds = 0
# total number of babies for one booking
seniors = 0
# total number of seniors for one booking
a_cost = 0
# total cost of adults for one booking
c_cost = 0
# total cost of children for one booking
s_cost = 0
# total cost of seniors for one booking
tot_adult = 0
# running total for adults over day
tot_child = 0
# running total for children over day
tot_bab = 0
# running total for babies over day
tot_sen = 0
# running total for seniors over day
total_birthdays = []
while True:
# run validation for total number of people
total_people = input('How many people are going?: ').strip()
# get total number of people and strip to remove unnecessary spacing
if total_people == '':
# if total people entered as blank
print("* you haven't entered anything.")
# let user know error
continue
# go back to top of loop to re-enter total number of people
elif re.search('[a-z]', total_people):
# if there are lowercase letters in total people
print("* entry can't contain letters. please try again with only numbers.")
# let user know error
continue
# go back to top of loop to re-enter total number of people
elif re.search('[A-Z]', total_people):
# if there are uppercase letters in total people
print("* entry can't contain letters. please try again with only numbers.")
# let user know error
continue
# go back to top of loop to re-enter total number of people
elif re.search('[~!@#£€$¢¥§%^&*()\\-_+={}[]|/:;"\'<>,.?]', total_people):
# if there are symbols in total people
print("* entry can't contain letters. please try again with only numbers.")
# let user know error
continue
# go back to top of loop to re-enter total number of people
elif int(total_people) < 1:
# if total people as an integer is less than 1
print('* must have at least one guest.')
# let user know error
continue
# go back to top of loop to re-enter total number of people
else:
# if none of these conditions apply, entry is valid
break
# exit out of while loop
total_people = int(total_people)
# convert total people to integer for furture use
x = True
# set x variable to true
while x == True:
# while x is true, loop can run
for person in range(total_people):
# for each person as one of total people
while True:
# run validation for birthday
birthday = input('Birthday (MM/DD/YYYY): ').strip()
# get total number of people and strip to remove unnecessary spacing
if birthday == '':
# if birthday entered as blank
print("* you haven't entered anything.")
# let user know error
continue
# go back to top of loop to re-enter birthday
elif re.search('[a-z]', birthday):
# if there are lowercase letters in birthday
print("* birthday can't contain letters. please try again in (MM/DD/YYYY) format.")
# let user know error
continue
# go back to top of loop to re-enter birthday
elif re.search('[A-Z]', birthday):
# if there are uppercase letters in birthday
print("* birthday can't contain letters. please try again in (MM/DD/YYYY) format.")
# let user know error
continue
# go back to top of loop to re-enter birthday
elif re.search('[~!@#£€$¢¥§%^&*()\\-_+={}[]|/:;"\'<>,.?]', birthday):
# if there are symbols in birthday
print("* birthday can't contain an invalid symbol. please try again in (MM/DD/YYYY) format.")
# let user know error
continue
# go back to top of loop to re-enter birthday
try:
# if content is correct, check format
datetime.datetime.strptime(birthday, '%m/%d/%Y')
# if birthday can be made into a date format, is valid
except ValueError:
# if birthday can't be made into a date format
print('* incorrect date format, should be (MM/DD/YYYY)')
# let user know error
continue
# go back to top of loop to re-enter birthday
birthdays = birthday.split('/')
# format now correct, split to run validation for dates
if len(birthdays[2]) != 4:
# if the year does not have 4 numbers
print('* invalid year. please try again.')
# let user know error
continue
# go back to top of loop to re-enter birthday
elif int(birthdays[2]) < 1900:
# if the year is less thyan 1900
print('* invalid year. please try again.')
# let user know error
continue
# go back to top of loop to re-enter birthday
elif datetime.datetime.strptime(birthday,'%m/%d/%Y') > today:
# if the date entered is in the future
print('* invalid date. please try again.')
# let user know error
continue
# go back to top of loop to re-enter birthday
elif birthdays[0] in thirtyone:
# if the month is in the list of months with thirty one days
if int(birthdays[1]) <= 31:
# if the day is less than or equal to 31
break
# birthday is valid, exit out of loop
else:
# if the day is more than 31
print('* invalid day. please try again.')
# let user know error
continue
# go back to top of loop to re-enter birthday
elif birthdays[0] in thirty:
# if the month is in the list of months with thirty days
if int(birthdays[1]) <= 30 :
# if the day is less than or equal to 30
break
# birthday is valid, exit out of loop
else:
# if the day is more than 30
print('* invalid day. please try again.')
# let user know error
continue
# go back to top of loop to re-enter birthday
elif birthdays[0] == '02':
# if the month is february
if int(birthdays[1]) > 29:
# if the day is more than 29
print('* invalid date. please try again.')
# let user know error
continue
# go back to top of loop to re-enter birthday
elif int(birthdays[1]) == 29:
# if the day is exactly equal to 29
if int(birthdays[2]) % 4 == 0 and int(birthdays[2]) % 10 != 0:
# if the year is exactly divisible by 4 but not by 10
break
# birthday is valid (valid leap year), exit out of loop
else:
# if the year is not a valid leap year
print('* invalid date. please try again.')
# let user know error
continue
# go back to top of loop to re-enter birthday
else:
# if the day is less than or equal to 28
break
# birthday is valid, exit out of loop
else:
# if the month is more than 12
print('* invalid month. please try again.')
# let user know error
continue
# go back to top of loop to re-enter birthday
total_birthdays.append(birthday)
# append validated birthday to total birthdays list
for birthday in total_birthdays:
# for each valid birthday in total birthdays loop
birth_date = datetime.datetime.strptime(birthday,'%m/%d/%Y')
# convert birthday to workable date format
age = today - birth_date
# take birthday away from today's date
age = age.total_seconds()/(365*24*3600)
# find numerical value for age by dividing total seconds of answer by seconds in one year
if age < 3:
# if age is less than 3
baby_todds += 1
# add 1 to babies total
tot_bab += 1
# add 1 to babies running total
elif age < 12:
# if age is less than 12
children += 1
# add 1 to children total
tot_child += 1
# add 1 to children running total
elif age >= 65:
# if age is greater than or equal to 65
seniors += 1
# add 1 to seniors total
tot_sen += 1
# add 1 to seniors running total
else:
# if none of above, is adult by default
adults += 1
# add 1 to adults total
tot_adult += 1
# add 1 to adults running total
if baby_todds == 0:
x = False
elif baby_todds > 0 and (adults > 0 or seniors > 0):
# if there are babies/toddlers but at least one adult/senior
x = False
# suitable parental advisory, break out of loop
else:
# if there are babies/toddlers but no adults or seniors
print()
# add break
print('Babies and toddlers can not go unsupervised.')
# let user know error
print('Please re-enter appropriate birth dates.')
# request to re-enter birthdays
tot_bab -= baby_todds
# removes last entry from running total for babies/toddlers
baby_todds = 0
# resets baby/toddlers to 0
tot_child -= children
# removes last entry from running total for children
children = 0
# resets children to 0
x = True
# go right back to start of loop
print(baby_todds)
print(tot_bab)
print(children)
print(tot_child)
e.g. I enter the birthdays 02/19/2020 and 03/20/2019 and it comes up with error (no adults/seniors) and asks for me to enter it again. So I enter 02/19/1990 and 02/29/20000 which is valid. But baby_todds and tot_bab both print out as 2 still? I swear I have tried everything but nothing is working. It's like it completely skips over that code.
Upvotes: 0
Views: 74
Answers (1)
Tomer Shinar
Reputation: 415
Your problem is that when you return to the start of the loop and receive new dates from the user, you don't create a new total_birthdays list, you append the one you created before the loop, which also contains the dates from the previous iteration of the loop. if you will move the line total_birthdays = [] to inside the loop that read dates from the user, it should work.
Upvotes: 1
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