Create tuples_exercises_python.py

Author: silvuple

tuples_exercises_python.py

@@ -0,0 +1,245 @@
+"""
+1. Write a Python program to create a tuple.
+"""
+
+my_empty_tuple = ()
+my_another_empty_tuple = tuple()
+my_single_tuple = 'abc',
+my_multiple_tuple = 'abc', 'bcd', 'xyz'
+my_multiple_tuple_with_braktes = ('abc', 'bcd', 'xyz')
+my_list = [1, 2, 3, 3, 4]
+my_tuple_from_list = tuple(my_list)
+
+
+print(my_empty_tuple, type(my_empty_tuple), '\n',
+      my_another_empty_tuple, type(my_another_empty_tuple), '\n',
+      my_single_tuple, type(my_single_tuple), '\n',
+      my_multiple_tuple, type(my_multiple_tuple), '\n',
+      my_multiple_tuple_with_braktes, type(my_multiple_tuple_with_braktes), '\n',
+      my_tuple_from_list, type(my_tuple_from_list))
+
+"""
+2. Write a Python program to create a tuple with different data types.
+"""
+
+my_tuple = ('abc', 1, 4.56, ['a', 'b', 'c'], True)
+print(my_tuple)
+
+for i in my_tuple:
+    print(i, 'type is', type(i))
+
+"""
+3. Write a Python program to create a tuple with numbers and print one item.
+"""
+from random import randint
+my_tuple = (1, 2, 3, 3, 4)
+print(my_tuple[randint(0, len(my_tuple)-1)])
+
+"""
+4. Write a Python program to unpack a tuple in several variables.
+"""
+my_tuple = ('a', 'b')
+var1, var2 = my_tuple
+print(var1, var2)
+
+"""
+5. Write a Python program to add an item in a tuple.
+"""
+
+my_tuple = ('a', 'b')
+my_new_tuple = my_tuple + ('c',)
+
+print(my_new_tuple)
+
+"""
+6. Write a Python program to convert a tuple to a string.
+"""
+my_tuple = ('a', 'b')
+my_string = ''.join(my_tuple)
+print(my_string)
+
+"""
+7. Write a Python program to get the 4th element
+and 4th element from last of a tuple.
+"""
+
+my_tuple = tuple('abcdefgh')
+print(my_tuple)
+print('4th element is', my_tuple[3])
+print('4th to last element is', my_tuple[-4]) 
+
+"""
+8. Write a Python program to create the colon of a tuple.
+"""
+
+my_tuple = (':',)
+my_colon, = my_tuple
+print(my_colon)
+
+"""
+9. Write a Python program to find the repeated items of a tuple.
+"""
+
+my_tuple = (1, 1, 2, 3, 4, 4, 5)
+
+repeated_items = []
+for i in my_tuple:
+    if my_tuple.count(i) > 1:
+        repeated_items.append(i)
+print(set(repeated_items))
+
+"""
+10. Write a Python program to check whether an element exists within a tuple.
+"""
+
+my_tuple = (1, 2, 3, 4, 5)
+
+if 2 in my_tuple:
+    print('2 is in', my_tuple)
+else:
+    print('2 is NOT in', my_tuple)
+
+if 6 in my_tuple:
+    print('6 is in', my_tuple)
+else:
+    print('6 is NOT in', my_tuple)
+
+"""
+11. Write a Python program to convert a list to a tuple.
+"""
+
+my_list = [1, 2, 3, 4, 5]
+my_tuple = tuple(my_list)
+print(my_tuple)
+
+"""
+12. Write a Python program to remove an item from a tuple.
+"""
+
+my_tuple = (1, 2, 3, 4, 5)
+# to remove number 3
+my_new_tuple = my_tuple[:my_tuple.index(3)] + my_tuple[my_tuple.index(3)+1:]
+print(my_new_tuple)
+
+"""
+13. Write a Python program to slice a tuple.
+"""
+
+my_tuple = tuple('axbxcx')
+
+print(my_tuple[::2])
+
+"""
+14. Write a Python program to find the index of an item of a tuple.
+"""
+
+my_tuple = ('a', 'b')
+print(my_tuple.index('a'))
+
+"""
+15. Write a Python program to find the length of a tuple.
+"""
+
+my_tuple = ('a', 'b')
+print(len(my_tuple))
+
+"""
+16. Write a Python program to convert a tuple to a dictionary.
+"""
+
+my_tuple = ('a', 1, 'b', 2)
+
+my_dict = {}
+for i in range(0, len(my_tuple), 2):
+    my_dict[my_tuple[i]] = my_tuple[i+1]
+print(my_dict)
+
+"""
+17. Write a Python program to unzip a list of tuples into individual lists.
+"""
+
+my_list = [(1, 2), ('a', 'b'), (True, False)]
+new_list = []
+for i in my_list:
+    new_list.append(list(i))
+print(*new_list)
+
+"""
+18. Write a Python program to reverse a tuple.
+"""
+my_tuple = (1, 2, 3, 4)
+reversed_tuple = my_tuple[::-1]
+print(reversed_tuple)
+
+"""
+19. Write a Python program to convert a list of tuples into a dictionary.
+"""
+
+# solution 1 for unique keys
+my_list = [('a', 1), ('b', 2)]
+my_dict = {i[0]:i[1] for i in my_list}
+print(my_dict)
+
+# solution 2 for same key appearing in several tuples
+my_list = [('a', 1), ('b', 2), ('a', 5)]
+my_dict = {}
+for i in my_list:
+    my_dict.setdefault(i[0],[]).append(i[1])
+print(my_dict)
+
+"""
+20. Write a Python program to print a tuple with string formatting.
+Sample tuple : (100, 200, 300)
+Output : This is a tuple (100, 200, 300)
+"""
+
+my_tuple = (100, 200, 300)
+print('This is a tuple {}'.format(my_tuple))
+
+"""
+21. Write a Python program to replace last value of tuples in a list.
+Sample list: [(10, 20, 40), (40, 50, 60), (70, 80, 90)]
+Expected Output: [(10, 20, 100), (40, 50, 100), (70, 80, 100)]
+"""
+
+my_list = [(10, 20, 40), (40, 50, 60), (70, 80, 90)]
+
+new_list = [i[:len(i)-1]+(100,) for i in my_list]
+print(new_list)
+
+"""
+22. Write a Python program to remove an empty tuple(s) from a list of tuples.
+Sample data: [(), (), ('',), ('a', 'b'), ('a', 'b', 'c'), ('d')]
+Expected output: [('',), ('a', 'b'), ('a', 'b', 'c'), 'd']
+"""
+
+
+my_list = [(), (), ('',), ('a', 'b'), ('a', 'b', 'c'), ('d')]
+
+new_list = [i for i in my_list if i]
+print(new_list)
+
+"""
+23. Write a Python program to sort a listof tuples by the float element.
+Sample data: [('item1', '12.20'), ('item2', '15.10'), ('item3', '24.5')]
+Expected Output: [('item3', '24.5'), ('item2', '15.10'), ('item1', '12.20')]
+"""
+
+my_list = [('item1', '12.20'), ('item2', '15.10'), ('item3', '24.5')]
+
+my_list.sort(key=lambda x: x[1], reverse=True)
+print(my_list)
+
+"""
+24. Write a Python program to count the elements in a list until an element is a tuple.
+"""
+
+my_list = [1, 2, 3, (4,), 5, 6]
+
+counter = 0
+for i in my_list:
+    if not isinstance(i, tuple):
+        counter += 1
+    else:
+        break
+print(counter)