Python Basics

Python Syntax

• Data Type
• Indention
• Math Operation
• Comment

String and console output

• 转移字符\
• Access by index
• Strig Method
• str()
• Not Notation
• Printing Strings
• print variables

Advanced printing

• string concatenation
• explicit string conversion
• string formatting with %

Review

• string creating, three way: ”, ” “, str()
• string method: upper(), lower()
• print string

Datetime

• datetime.now
• now.year
• hot date
• pretty date

Conditionals and flow control

• booleans
• comparison operator
• boolean operator, not first, and next, or last
• if, else,elif

Summary: comparator, boolean operator, conditional statement

Functions

• Function Junctions
• Calling Function
• Agruments
• Function calling Functions
• import
• built in functions

List and Dictionary

list

• Access by index
• Assignment
• Late arrival(append) and list length
• Slicing
• Search and insert
• For one and all
• sort

Dictionary

• key accessing
• new entries
• del by keyword （general cases）
• remove by value (list notation method)

operation with list

• list as argument
• string looping

Lists and funcstions

• .pop(index),.remove(item)
• range
• iterating a list in a function
• using string in list in function

Battleship exercise

• ” “.join(letters)
• from random import randint

Loops

• while loop
• for strings
• for list
• for dictionary
• eumuerate
• zip

Practice

• Fun with numbers
• String it together(access, reverse, split and join)
• Listing your problems
• remove duplicates

Advanced Python Features

• items(),values(),keys()
• list comprehension using for/in and if
• list slicing
• reverse a list, lst[::-1]
• Anonymous Functions lambda x: x%3 ==0
• Filter, filter（lambda, lst)

bitwise operation

• << and >>
• &
• |
• ^
• 0b101, bin(0b101)

Classes

To be sepcified
- Class basics: class NewName(object):
- Class instance
- Class member variable : belongs to class
- Calling member variables
- Initializing a class: __init__
- Member function
- Overloading

File input/Output

• f = open(“text.txt”,’r’) : ‘r’,’w’,’r+’,’a’
• f.close()
• with open(‘text.txt’,’w’) as f: ….. it will close the file for us
• f.closed
• f.readline() read text line-by-line