Python Full Stack road DAY12

first edited September 29, 2017 9:15:21

Summary
I. Character encoding
Two. Data type
Three. Process Control
Homework
Summary today

Summary

References: Alex

1. Character encoding
2. String, List of additions and deletions to search
3. For, while Loop

I. Character encoding

1. ASCII code
   • 1 bits is the smallest representation unit in a computer 8bits = 1Byte = 1 bytes 1 bytes is the smallest storage unit in a computer
   • ASCII 8 bits per character
2. Unicode

Two. Data type

1. Str
   int shaping
   Long integer type
   List
   Dict
   Set
   float Float Type
2. Multi-line comments
3. Single and double quotes do not have any difference, they only apply to single-line. 3 single or double quotation marks for multiple lines of string or multiline comments
4. Boolean type
   • True
   • False

5. String

   • String Common functions:
     Remove white space: strip () You can take off the string and specify a space or symbol
     Split: Split () splits a string into a list by a specified symbol or space
     Length: Len () measure the length of the string
     Index: Index (NUM)
     Slices: [num1:num2] cut out from NUM1 to num2
     Step:
   • Gu Tou regardless of the tail
     

• List
  Change and delete
  Append (-1) added to the last
  
  

Three. Process Control

1. For...else
   
   

1. While...else

Homework

3. Job 2
   Shopping Cart Procedure
   Python shopping.py
   Input your salary:5000
   You can buy the following things:

   1. iphone 5800
   2. Coffee 30
   3. Book 50
   4. Condom 90
      1
      Can't afford to print, how much is the difference?
      2
      Put in the shopping cart, deduct the money while printing the balance ... 4970
      3
      4
      Q
      You bought the following things
      Coffee 30
      Book.. 333
      How many first 3000 do you have?
      Bye.
      Knowledge points
      1 cycles
      2 List

Summary today

Python Full Stack road DAY12