This document provides an introduction and overview of Python including sections on syntax, lists and dictionaries, for loops, and implementation examples. The introduction covers that Python code is indented using whitespace rather than brackets, semicolons are optional, and data types do not need declaration. Lists are described as arrays that can hold different data types indexed by number, while dictionaries hold key-value pairs indexed by keys that can be numbers, strings, or other data types. For loops in Python iterate over each item in a list or dictionary without needing an explicit condition. The implementation section provides examples of using for loops over lists, creating and accessing a dictionary of fruits, and making lists of dictionaries to demonstrate Python concepts.

1. Introduction to Python
Introduction to Python
Yi-Fan Chu, 2016
Social Network Application
Department of Computer Science, University of Taipei

2. Introduction to Python
Overviews
1.Introduction
2.Syntax
3.List and Dictionary
4.For loop
5.Implementation

3. Introduction to Python
Beautiful, Simple, Explicit…
Rapid development
Item by item
Introduction

4. Introduction to Python
Overviews
1.Introduction
2.Syntax
3.List and Dictionary
4.For loop
5.Implementation

5. Introduction to Python
Semicolon is not needed.
Data type declaration is not needed.
Indented with logic
Syntax

6. 3.Indented with logic
1.Semicolon is not needed
2. Data type declaration is not needed.

7. Introduction to Python
Indented with logic
Different indentation
with different result.

8. Introduction to Python
Overviews
1.Introduction
2.Syntax
3.List and Dictionary
4.For loop
5.Implementation

9. Introduction to Python
Data Structure to save data, just like “array”
With different index
List and Dictionary

10. Introduction to Python
Array
Different data type items in the same list
List

11. Introduction to Python
[ ]
[1,2,3,4,5]
[ “abc”, ”def”, ”ghi”]
[1, ”abc”, 1.253, [1,2,3], {“xyz”:”hahaha”} ]
List
int string float list dictionary

12. Introduction to Python
Key-Value
Key : int, float, string
Value : int, float, string, list, dictionary
Dictionary

13. Introduction to Python
{ Key : Value }
{ Key : Value, Key : Value, Key : Value…}
Dictionary

14. Introduction to Python
{ Key : Value }
{ “name” : “Apple”,
“color” : “red”,
“amonut” : 3 }
Dictionary
Key Value

15. Introduction to Python
List and Dictionary
[ “apple”, “red”, “3” ]
{ “fruit”:“apple”, “color”:“red”, “amount”:“3” }
Key : 0 1 2
Value: apple red 3
Key : fruit color amount
Value: apple red 3

16. Introduction to Python
Overviews
1.Introduction
2.Syntax
3.List and Dictionary
4.For loop
5.Implementation

17. Introduction to Python
Item by item
Without entering condition
For loop

18. Introduction to Python
for( int i; i < 10; i++){
blah blah blah; }
For loop
for item in list/dictionary:
item = item + 1
C / Java
Python
With Condition
Without Condition

19. Introduction to Python
Overviews
1.Introduction
2.Syntax
3.List and Dictionary
4.For loop
5.Implementation

20. Introduction to Python
Implementation
Checkpoint1 : For loop
Checkpoint2 : List of Dictionary

21. Introduction to Python
Implementation
Setup environment
Making lists of number and strings
Try to use for loop
Making a directory of fruit
print something from directory

22. Introduction to Python
Set your env like this
If you’d like to edit by vim, just go ahead!

23. Introduction to Python
Create a new file.
Sublime Text 2 / File / New File

24. Introduction to Python
Save the file on Desktop.
Sublime Text 2 / File / Save

25. Introduction to Python
Make two lists.
A list for int, a list for strings.

26. Introduction to Python
Try the for loop.
For every number in list a…

27. Introduction to Python
Go to Desktop and execute.
What do you think the result is?

28. Introduction to Python
Result
Is the result same as you think?

29. Introduction to Python
Make a dictionary of fruit.

30. Introduction to Python
Execute again.
What do you think the result is?

31. Introduction to Python
Execute again.
Is the result same as you think?

32. Introduction to Python
Implementation
Checkpoint1 : For loop
Checkpoint2 : List of Dictionary

33. Introduction to Python
Make a list of dictionary.

34. Introduction to Python
Put some data in them.

35. Introduction to Python
Let’s try some “if”,“else”

36. Introduction to Python
Execute again

37. Introduction to Python
Result
Is the result same as you think?