Python 6-Day Challenge

6 days of Python with brief intorductory question on varaious data structures in python and their functionality.

Day 1

Kaggle microcourse on Python : Done @ https://www.kaggle.com/learn/python

Day 2 : (Using Builtin functions)

1. Write a program which accepts a sequence of comma-separated numbers from console and generate a list and a tuple which contains every number. Suppose the following input is supplied to the program: 34,67,55,33,12,98 Then, the output should be: ['34', '67', '55', '33', '12', '98'] ('34', '67', '55', '33', '12', '98')
2. Write a program that accepts sequence of lines as input and prints the lines after making all characters in the sentence capitalized. Suppose the following input is supplied to the program: Hello world Practice makes perfect Then, the output should be: HELLO WORLD PRACTICE MAKES PERFECT
3. Find the last element of a list. Eg., l = [1, 2, 3, 4] Last_elemnt(l) -> 4
4. Reverse a list and return it. Eg., l = [1, 2, 3, 4] reverse_list(l) -> [4, 3, 2, 1]
5. Write a program that accepts a comma separated sequence of words as input and prints the words in a comma-separated sequence after sorting them alphabetically. Suppose the following input is supplied to the program: Without,hello,bag,world Then, the output should be: Bag,hello,without,world

Day 3 : (Learning Dictionary)

6. Write a Python script to add a key to a dictionary. Add_item({0: 10, 1: 20},2,30)-->{{0: 10, 1: 20, 2: 30}
7. Write a Python script to concatenate dictionaries to create a new one. Example: dic1={1:10, 2:20} dic2={3:30, 4:40} dic3={5:50,6:60} def dict_concatenate(dict1,dict2,dict3)--> {1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
8. Write a Python program to check if a given key already exists in a dictionary. Example- check_key({1:10,2:20,3:30},2)--> True
9. Write a Python program to check a dictionary is empty or not. Example- is_empty({})--> True is_empty({'a':'b','c':'d'})--> False
10. Write a Python program to combine two dictionary adding values for common keys. D1 = {'a': 100, 'b': 200, 'c':300} d2 = {'a': 300, 'b': 200, 'd':400} Example- combine_duplicates(d1,d2)-->>({'a': 400, 'b': 400, 'd': 400, 'c': 300})

Day 4 : (Lists)

11. Replace consecutive duplicate elements of list with single element. Eg., l = [a, a, a, b, b, c, a, a, d, d, d, x, x] compress(l) -> [a, b, c, a, d, x]

12. Pack consecutive duplicates of list elements into sublists. Eg., l = [1, 1, 1, 2, 2, 3, 3, 4] pack(l) -> [[1,1,1], [2,2], [3,3], [4]]

13. Given two indices, i and k, the slice is the list containing the elements between the i'th and k'th element of the original list (left limit included). Start counting the elements with 0. Eg., l = [1, 3, 9, 8, 7]; Slice(l, 1, 3) --> [3, 9]

14. Given a list l, index i and element elem, return a new list with elem at index i Eg., l = [1, 3, 9, 8, 7]; insert_element(l, 1, 3) --> [1, 3, 9, 1, 8, 7]

15. Remove the k'th element from a list. Example: remove_element([a,b,c,d],2)-->[a,c,d]

Day 5 :

16. Find whether a list a palindrome -> a sequence that reads the same forwards and backwards is_palindrome([1, 2, 1]) -> True is_palindrome([1, 2, 3, 2, 1] -> True is_palindrome([1, 2, 3, 1]) -> False
17. Rotate a list N places to the left. Examples: rotate_list([a,b,c,d,e,f,g,h],3)--> [d,e,f,g,h,a,b,c] rotate_list([a,b,c,d,e,f,g,h],-2)--> [g,h,a,b,c,d,e,f] # Can also try a right rotate
18. Sorting a list of lists according to length of sublists We suppose that a list (inlist) contains elements that are lists themselves. The objective is to sort the elements of inlist according to their length. Example: def sort_list([[a,b,c],[d,e],[f,g,h],[d,e],[i,j,k,l],[m,n],[o]],L)--> [[o], [d, e], [d, e], [m, n], [a, b, c], [f, g, h], [i, j, k, l]]
19. Determine whether a given integer number is prime. Example: is_prime(7)-->True is_prime(10)-->False
20. Determine the greatest common divisor of two positive integer numbers. Use Euclid's algorithm. Example: gcd(36, 63)-->9

Day 6

Take this quiz : https://www.w3schools.com/python/python_quiz.asp Solve all excercises from https://www.w3schools.com/python/python_exercises.asp

Yayyyy... You did it. 🎊

Now, you know Python. Let's specialize in commonly used python packages to start solving Data Science questions. Complete this https://github.com/Anjali001/Python15DayChallenge to become a master in Pandas and Numpy.