def Prime_Number(n, i=2):
    if n == i:
        return True
    elif n % i == 0:
        return False
    return Prime_Number(n, i + 1)


n = 113971
if Prime_Number(n):
    print("Yes,", n, "is Prime")
else:
    print("No,", n, "is not a Prime")

No, 113971 is not a Prime

fruits = ("apple", "banana", "cherry")

(green, yellow, red) = fruits
print(green)
print(yellow)
print(red)

apple
banana
cherry

fruits = ("apple", "banana", "cherry")

(green, *a) = fruits
print(green)
print(a)

apple
['banana', 'cherry']

fruits = ("apple", "banana", "cherry")

(_,yellow, _) = fruits
print(yellow)
print(fruits[1])

banana
banana

fruits += "kiwi",
fruits += 1,
print(fruits)

('apple', 'banana', 'cherry', 'kiwi', 'kiwi', 'kiwi', 'kiwi', 'kiwi', 'kiwi', 'kiwi', 'kiwi', 1)

x = 1
y = 1.5
(x, y) = (y, x)
print(x)
print(y)

1.5
1

thistuple = (1, 3, 7, 8, 7, 5, 4, 6, 8, 5)
x = thistuple.count(5)
print(x,thistuple.index(5))

2 5

Dictionary

Key: immutable: int, str, bool, tuple, float (not recommended)

my_dict = {'a':1,1.01:'a',True:'b',(1,1.):True}
print(my_dict)

{'a': 1, 1.01: 'a', True: 'b', (1, 1.0): True}

# my_dict[False]
print(type(my_dict.get(False,'in no False in dect')))

<class 'str'>

1 not in my_dict

True

my_dict = {'a':1,'b':2,'c':3,'d':4}
print(my_dict)
print(my_dict.pop('a')) #returned value by key and delete the entry
print(my_dict.pop('b','Ups')) #returned alternative value since no key found
key1, value1 = my_dict.popitem()

{'a': 1, 'b': 2, 'c': 3, 'd': 4}
1
2

my_dict = {'a':1,'b':2,'c':3,'d':4}
my_dict.keys()
my_dict.values()
my_dict.items() # iterable
tuple(my_dict.items())[2]
for x in my_dict.items():
  print(x)
for x in my_dict: # keys by default
  print(x)
for x,y in enumerate(my_dict):
  print(x,y)

('a', 1)
('b', 2)
('c', 3)
('d', 4)
a
b
c
d
0 a
1 b
2 c
3 d

my_dict = {'a':1,'b':2,'c':3,'d':4}
d2 = my_dict
d2['a'] = 10
print(my_dict)
my_dict = {'a':1,'b':2,'c':3,'d':4}
d2 = my_dict.copy()
d2['a'] = 10
print(my_dict)

{'a': 10, 'b': 2, 'c': 3, 'd': 4}
{'a': 1, 'b': 2, 'c': 3, 'd': 4}

def my_func(**params):
  return params

a = my_func(a=1,b=2,c=3)
print(a)

{'a': 1, 'b': 2, 'c': 3}

numbers = [1,2,3]
squares = [x**2 for x in numbers]

d = {}
for x, y in zip(numbers,squares):
  d[x] = y

print(d)

{1: 1, 2: 4, 3: 9}

# dictionary comprehension
d = {x:y for x,y in zip(numbers,squares)}
print(d)

{1: 1, 2: 4, 3: 9}

numbers = {'first':1,'second':2,'third':3,'fourth':4}
print(sorted(numbers)) # by key
print(sorted(numbers,key=numbers.get,reverse=True)) # by value

['first', 'fourth', 'second', 'third']
['fourth', 'third', 'second', 'first']