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date_data.py
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from datetime import datetime
class DateData:
"""
This class is responsible for structuring the dates, finding today and next date.
:param days: number representing range of days (from 1 to 365).
:return:
"""
def __init__(self, days):
"""
Initialazing method, takes care of finding current date.
:param days: number of days into the future to look for a flight
"""
# takes care of finding dates.
self.today = datetime.now()
self.today_year = self.today.year
self.today_month = self.today.month
self.today_day = self.today.day
self.today_date = datetime.now().date().strftime("%d/%m/%Y")
self.days_ahead = days - 1 # -1 - counts from today without it counts days from tomorrow
self.days_in_months = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
self.days_from_start_of_the_year = 0
self.next_year_days_in_months = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
self.next_year = 0
self.next_month = 0
self.next_day = 0
self.next_date = ""
self.leap = self.is_year_leap(self.today_year, 1)
self.leap_next_year = self.is_year_leap(self.today_year, 0)
self.find_date_from_start_of_the_year()
# print("days from start of the year ", self.next_date)
def is_year_leap(self, year, activator):
"""
Checks if year is a leap year
:param year: a year (2000 or 934)
:param activator: if "0" - today date, if "1" - next date
:return: returns True if year is a leap year or False otherwise
"""
if year % 4 == 0 and not year % 100 == 0 or year % 100 == 0 and year % 400 == 0:
if activator == 1:
self.days_in_months[1] = 29
elif activator == 0:
self.next_year_days_in_months[1] = 29
return True
else:
return False
def find_date_from_start_of_the_year(self):
"""
Finds out the date in 'days' number of days from today.
:return:
"""
# calculates days from start of the year
try:
months_scope = self.days_in_months[0:self.today_month - 1]
except IndexError:
months_scope = self.days_in_months
for days in months_scope:
self.days_from_start_of_the_year += days
self.days_from_start_of_the_year += self.today_day
days = self.days_from_start_of_the_year + self.days_ahead
# print("Number of days from start of the year has has calculated:", self.days_from_start_of_the_year, )
# print("Days to given date from start of the year:", days)
# checks if date will be in the next year
if self.leap:
# calculates dates for leap year
# if days from start of the year exceed 366 (for a leap year) - it means it is next year
if days > 366:
# print("day in the next year - leap year")
days -= 366
# checks which month of the year
month_days_sum = 0
i = 0
equal = False
for days_in_month in self.days_in_months:
if days > month_days_sum:
month_days_sum += days_in_month
i += 1
elif days == month_days_sum:
equal = True
month_days_sum += days_in_month
i += 1
else:
pass
# print("days sum:", month_days_sum, "days: ", days, "month: ", i)
if equal:
self.next_month = i - 1
else:
self.next_month = i
self.next_day = abs(month_days_sum - days - 1) # abs(days - (month_days_sum -
# - self.days_in_months[self.next_month - 1]))
self.next_year = self.today_year + 1
self.next_date = f"{self.next_day}/{self.next_month}/{self.next_year}"
# self.print_function_for_debugging(days, days_in_month)
else:
# if days from start of the year lower or equal to 366 (for a leap year) - it means it is current year
# print("day in this year - leap year")
# checks which month of the year
month_days_sum = 0
i = 0
equal = False
for days_in_month in self.days_in_months:
if days > month_days_sum:
month_days_sum += days_in_month
i += 1
elif days == month_days_sum:
equal = True
month_days_sum += days_in_month
i += 1
else:
pass
# print("days sum:", month_days_sum, "days: ", days, "month: ", i)
if equal:
self.next_month = i - 1
else:
self.next_month = i
self.next_day = abs(month_days_sum - days - 1)
self.next_year = self.today_year
self.next_date = f"{self.next_day}/{self.next_month}/{self.next_year}"
# self.print_function_for_debugging(days, days_in_month)
else:
# calculates dates for standard year
# if days from start of the year exceed 365 - it means it is next year
if days > 365:
# print("day in the next year - standard year")
days -= 365
# checks which month of the year
month_days_sum = 0
i = 0
equal = False
for days_in_month in self.days_in_months:
if days > month_days_sum:
month_days_sum += days_in_month
i += 1
elif days == month_days_sum:
equal = True
month_days_sum += days_in_month
i += 1
else:
pass
# print("days sum:", month_days_sum, "days: ", days, "month: ", i)
if equal:
self.next_month = i - 1
else:
self.next_month = i
self.next_day = self.days_in_months[self.next_month - 1] - abs(month_days_sum - days - 1)
self.next_year = self.today_year + 1
self.next_date = f"{self.next_day}/{self.next_month}/{self.next_year}"
# self.print_function_for_debugging(days, days_in_month)
# if days from start of the year lower or equal to 365 - it means it is current year
else:
# print("day in this year - standard year")
# checks which month of the year
month_days_sum = 0
i = 0
equal = False
for days_in_month in self.days_in_months:
if days > month_days_sum:
month_days_sum += days_in_month
i += 1
elif days == month_days_sum:
equal = True
month_days_sum += days_in_month
i += 1
else:
pass
# print("days sum:", month_days_sum, "days: ", days, "month: ", i)
if equal:
self.next_month = i - 1
else:
self.next_month = i
self.next_day = self.days_in_months[self.next_month - 1] - abs(month_days_sum - days - 1)
self.next_year = self.today_year
self.next_date = f"{self.next_day}/{self.next_month}/{self.next_year}"
# self.print_function_for_debugging(days, days_in_month)
def print_function_for_debugging(self, days, month_days_sum):
"""
Function used only for debugging during development (printing some values in console), after finding both dates.
:param days:
:param month_days_sum:
:return:
"""
print("Self.next_month:", self.next_month)
print("Self.days_in_months[self.next_month-1]:", self.days_in_months[self.next_month - 1])
print("Days:", days)
print("Month_days_sum:", month_days_sum)
print("Self.next_day:", self.next_day)
print(self.next_date)