Question

Python

#Imagine you're writing a program to check if a person is
#available at a certain time.
#
#To do this, you want to write a function called
#check_availability. check_availability will have two
#parameters: a list of instances of the Meeting class, and
#proposed_time, a particular date and time.
#
#check_availability should return True (meaning the person
#is available) if there are no instances of Meeting that
#conflict with the proposed_time. In other words, it should
#return False if proposed_time is between the start_time and
#end_time for any meeting in the list of meetings.
#
#The Meeting class is defined below. It has two attributes:
#start_time and end_time. start_time is an instance of the
#datetime class showing when the meeting starts, and
#end_time is an instance of the datetime class indicating
#when the meeting ends.
#
#Hint: Instances of the datetime have at least six
#attributes: year, month, day, hour, minute, and second.
#
#Hint 2: Comparison operators work with instances of the
#datetime class. time_1 < time_2 will be True if time_1 is
#earlier than time_2, and False otherwise.
#
#You should not assume that the list is sorted.

#Here is our definition of the Meeting class:
from datetime import datetime
class Meeting:
def __init__(self, start_time, end_time):
self.start_time = start_time
self.end_time = end_time

#Write your function here!

#Below are some lines of code that will test your function.
#You can change the value of the variable(s) to test your
#function with different inputs.
#
#If your function works correctly, this will originally
#print: True, then False
meetings = [Meeting(datetime(2018, 8, 1, 9, 0, 0), datetime(2018, 8, 1, 11, 0, 0)),
Meeting(datetime(2018, 8, 1, 15, 0, 0), datetime(2018, 8, 1, 16, 0, 0)),
Meeting(datetime(2018, 8, 2, 9, 0, 0), datetime(2018, 8, 2, 10, 0, 0))]
print(check_availability(meetings, datetime(2018, 8, 1, 12, 0, 0)))
print(check_availability(meetings, datetime(2018, 8, 1, 10, 0, 0)))

Answer 1

I have commented the code

#Imagine you're writing a program to check if a person is
#available at a certain time.
#
#To do this, you want to write a function called
#check_availability. check_availability will have two
#parameters: a list of instances of the Meeting class, and
#proposed_time, a particular date and time.
#
#check_availability should return True (meaning the person
#is available) if there are no instances of Meeting that
#conflict with the proposed_time. In other words, it should
#return False if proposed_time is between the start_time and
#end_time for any meeting in the list of meetings.
#
#The Meeting class is defined below. It has two attributes:
#start_time and end_time. start_time is an instance of the
#datetime class showing when the meeting starts, and
#end_time is an instance of the datetime class indicating
#when the meeting ends.
#
#Hint: Instances of the datetime have at least six
#attributes: year, month, day, hour, minute, and second.
#
#Hint 2: Comparison operators work with instances of the
#datetime class. time_1 < time_2 will be True if time_1 is
#earlier than time_2, and False otherwise.
#
#You should not assume that the list is sorted.

#Here is our definition of the Meeting class:
from datetime import datetime
class Meeting:
    def __init__(self, start_time, end_time):
        self.start_time = start_time
        self.end_time = end_time

#Write your function here!
def check_availability(meetings,meetingTime):
    ans = True # variable to store ans
    for meeting in meetings: #iterate through the list
#if the proposed meeting falls in between the current meeting return false
        if meetingTime >= meeting.start_time and meetingTime <=meeting.end_time: 
            ans = False
    return ans


#Below are some lines of code that will test your function.
#You can change the value of the variable(s) to test your
#function with different inputs.
#
#If your function works correctly, this will originally
#print: True, then False
meetings = [Meeting(datetime(2018, 8, 1, 9, 0, 0), datetime(2018, 8, 1, 11, 0, 0)),
Meeting(datetime(2018, 8, 1, 15, 0, 0), datetime(2018, 8, 1, 16, 0, 0)),
Meeting(datetime(2018, 8, 2, 9, 0, 0), datetime(2018, 8, 2, 10, 0, 0))]
print(check_availability(meetings, datetime(2018, 8, 1, 12, 0, 0)))
print(check_availability(meetings, datetime(2018, 8, 1, 10, 0, 0)))

Output

True
False