tags: data structures, python, class
It is recommended to Uppercase the first letter of your classnames.
#!/usr/bin/python3
class User:
pass
# create an instance of User
user1 = User()
# give user a name
# this data attached to an object is called a field
# do not capitalize field names, seperate words by underscores (PEP 8 style Guide)
user1.first_name = "Dave"
user1.last_name = "Bowman"
print(user1.first_name)
print(user1.last_name)
# create another instance
user2 = User()
user2.first_name = "Frank"
user2.last_name = "Poole"
user1.age = 37
user2.favorite_book = "2001: A Space Odyssey"Adding more information to a class
#!/usr/bin/python3
import datetime
class User:
""" A member of FriendFace. For now we are
only storing their name and birthday.
But soon we will store an uncomfortable
amount of user information."""
# ^ add Docstring ^
# add a 'constructor'. In python, this is known as init or initialization
# this method is called every time you create a new instance of a class
def __init__(self, full_name, birthday):
self.name = full_name
self.birthday = birthday #yyyymmdd
# extract first and last name
name_pieces = full_name.split(" ")
self.first_name = name_pieces[0]
# l name not attached to self. This means it goes away at the end of the method.
l_name = name_pieces[-1]
self.last_name = name_pieces[-1]
def age(self):
"""Return the age of the user in years."""
today = datetime.date(2001, 5, 12)
yyyy = int(self.birthday[0:4])
mm = int(self.birthday[4:6])
dd = int(self.birthday[6:8])
dob = datetime.date(yyyy, mm, dd) # date of birth
age_in_days = (today - dob).days
age_in_years = age_in_days / 365 # ignoring leap years
return int(age_in_years)
# create an instance
user = User("Dave Bowman", "19710315")
print(user.name)
print(user.first_name)
print(user.last_name)
print(user.birthday)
print(user.age())
# calling help on the class will display Doctring and methods
help(User)Source: Python Classes and Objects || Python Tutorial https://www.youtube.com/apACNr7DC_s