Python: Explore Standard Libraries

import copy


lst = [[1, 2, 3], ['a', 'b']]


# Standard assignment 
dup_lst = lst
# id object is used to check whether objects are pointing the same reference
print(id(lst) == id(dup_lst))  # True

#Use copy module's shallow copy 
dup_lst = copy.copy(lst)

print(id(lst) == id(dup_lst))   # False
#Contents of the object are not duplicated with shallow copy
print(id(lst[0]) == id(dup_lst[0]))  # True

#Use copy module's shallow copy
dup_lst = copy.deepcopy(lst)

print(id(lst) == id(dup_lst))   # False
#Contents of the object are duplicated with deep copy
print(id(lst[0]) == id(dup_lst[0]))  # False  

import enum


class DaysOfWeek(enum.Enum):
    SUNDAY = 1
    MONDAY = 2
    TUESDAY = 3
    WEDNESDAY = 4
    THURSDAY = 5
    FRIDAY = 6
    SATURDAY = 7



print(f'Member name of Sunday: {DaysOfWeek.SUNDAY.name}')   # Member name of Sunday: SUNDAY
print(f'Member value of Friday: {DaysOfWeek.FRIDAY.value}')  # Member value of Friday: 6

for day in DaysOfWeek:
    print(day)

# DaysOfWeek.SUNDAY
# DaysOfWeek.MONDAY
# DaysOfWeek.TUESDAY
# DaysOfWeek.WEDNESDAY
# DaysOfWeek.THURSDAY
# DaysOfWeek.FRIDAY
# DaysOfWeek.SATURDAY    

import webbrowser

url = 'https://google.com' 

# Open URL in user's default browser and bring the browser window to the front
webbrowser.open(url)

# Open URL in a new tab, if a browser window is already open
webbrowser.open_new_tab(url)

import pprint


book = {
    'title' : "Automate the Boring Stuff with Python: Practical Programming for Total Beginners",
    'author' : "Al Sweigart",
    'pub_year' : 2015
}

print(book)  

#{'title': 'Automate the Boring Stuff with Python: Practical Programming for Total Beginners', 'author': 'Al Sweigart', 'pub_year': 2015}


pp = pprint.PrettyPrinter(width=100, compact=True)
pp.pprint(book)  

# Pretty print arranged keys in alphabetical order here display width is controlled to 100 characters

# {'author': 'Al Sweigart',
#  'pub_year': 2015,
#  'title': 'Automate the Boring Stuff with Python: Practical Programming for Total Beginners'}