Data Science and Basics of Python
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The document is an introduction to data science and Python data types. It discusses the different Python collection data types including lists, tuples, dictionaries and sets. It describes how to create, access and manipulate each type. It also covers loops in Python, including for loops and while loops. The document is copyrighted material from Cognitior and includes contact information to ask questions.
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Data Science and Basics of Python
- 1. Copyright © Cognitior www.cognitior.com Introductionto DataScience
- 2. Copyright © Cognitior www.cognitior.com
- 3. Copyright © Cognitior www.cognitior.com
- 4. Copyright © Cognitior www.cognitior.com
- 10. Copyright © Cognitior www.cognitior.com https://www.youtube.com/watch?v=d0QVHmyc_AM
- 13. Copyright © Cognitior www.cognitior.com TypesofVariables What is your name? • Chitti What is your age? • 33 How many days will we take to learn Python? • 27.5 Will you help us in learning Python? • True
- 14. Copyright © Cognitior www.cognitior.com PythoncollectionDatatypes Lists Tuples Dictionaries Sets
- 15. Copyright © Cognitior www.cognitior.com Lists Lists • Mutable • To hold sequence of values like Age, Gender etc • To create lists we need square brackets Creating Lists Accessing Lists Slicing Lists Reassigning Lists Deleting elements from Lists Multidimensional Lists Concatenation of Lists Operation on Lists Iteration on a Lists List comprehension Built-in functions Built-in Methods
- 16. Copyright © Cognitior www.cognitior.com Lists 10 20 30 35 40 45 20 0 1 2 3 4 5 6 -7 -6 -5 -4 -3 -2 -1 Index Reverse Index
- 17. Tuples • Immutable • Same as List but cannot change the values • To create Tuples we need normal brackets Copyright © Cognitior www.cognitior.com Tuples Creating Tuples Accessing Tuples Slicing Tuples Deleting Tuples Reassigning Tuples Functions on Tuples Methods on Tuples Operations on Tuples Iterating on a Tuple Nested Tuples
- 18. Dictionary • Key Value Pair • Words and Meanings, Customer and products, Students and Subjects • To create dictionary we use curly brackets and colon sign Copyright © Cognitior www.cognitior.com Tuples Creating Dictionaries Accessing Dictionaries Reassigning Dictionaries Deleting Dictionaries Nested Dictionary In-built Functions on Dictionaries In-built Methods on Dictionaries Operations on Dictionaries Iterating on a Dictionary
- 19. Sets • Holds sequence of unique values • Does not support indexing • To create sets we use curly brackets Copyright © Cognitior www.cognitior.com Sets Creating Sets Accessing Sets Updating Sets Deleting Sets In-built Functions on Sets In-built Methods on Sets Operations on Sets Iterating on a Set
- 20. For Loops • The range() function • Iterating on lists or similar constructs • Iterating on the indices of the lists or similar constructs • Else statement for for-loops Copyright © Cognitior www.cognitior.com LoopsinPython 2000 3445 4335 4444 230 211 222 453 Sales Profit
- 21. While Loops • An infinite loop • The else statement for while loop • Single statement while Copyright © Cognitior www.cognitior.com LoopsinPython
- 22. Thankyou!!! Anyquestions? support@cognitior.com Copyright © Cognitior www.cognitior.com