Tuples: Operations और Methods

t = (10, 20, 30, 40)
print(t[1], t[-1], t[1:3], len(t), type(t))
one = (5,)            # comma makes it a tuple
not_tuple = (5)       # just the number 5 in brackets
print(type(one), type(not_tuple))
p = 1, 2, 3           # brackets are optional (packing)
print(p, type(p))

t = (1, 2)
t[0] = 9

t = ([1, 2], 3)
t[0].append(9)       # the list inside can still change
print(t)

t = (10, 20, 30, 40)
print((1, 2) + (3, 4), ('ab',) * 3, 20 in t)
x = (3, 7, 1, 7, 9)
print(x.count(7), x.index(9))
print(len(x), max(x), min(x), sum(x))
print(sorted(x))                      # returns a LIST
print(tuple('hello'), tuple([1, 2]))

a, b, c = (4, 5, 6)                 # unpacking
print(a, b, c)
name, roll, marks = 'Ishan', 12, 88.5
print(name, roll, marks)
x, y = 10, 20
x, y = y, x                         # swap = tuple packing + unpacking
print(x, y)

students = (('Riya', 91), ('Aman', 85), ('Zoya', 78))
print(students[1][0], students[0][1])
for name, m in students:
    print(f'{name:<6}{m}')

n = int(input('How many numbers? '))
t = ()
for i in range(n):
    t = t + (int(input('Number: ')),)    # build a new tuple each time
print('Tuple:', t)
print('Max:', max(t), '| Min:', min(t), '| Mean:', sum(t) / len(t))

def circle(r):
    area = 3.14 * r * r
    circumference = 2 * 3.14 * r
    return area, circumference       # a tuple

result = circle(5)
print(result, type(result))
a, c = circle(5)
print('Area =', a, '| Circumference =', c)