Cat Ning! ! !
Course Guidance
Beijing Institute of Technology
National quality online open courses
Zero-based, college-level
About line 100 python can do many things
Programming is basic skills, the experience of thinking
The relationship between the costs and benefits of time
5 hours per week
https://python123.io , practical projects
Online courses, online practice, offline data
Complete basic grammar system python
16 good practice cases
Assessment is not an end, but can detect the effectiveness of learning
Weekly exercises, periodic tests
Fragmented time full time +
With the progress, the practice of
Chairman Mao - On Practice
Programming capabilities near the body
Perceptual, rational learning
Various characters in the novel and in order of appearance frequency
wordcloud word cloud with the government work report
Computational thinking, computing ecosystem, user experience
Programming is routine
Eco-python
Section 1: python basic syntax elements
The basic method of programming IPO, input, process, output
Programmability: automatically, predictably and accurately in accordance with the operator's intention to complete the series of instructions
The device is not a computer can not be programmed
Moore's Law, Intel geometric progression computer speed
Programming languages: Simple, it is strictly prohibited, accurate, compared to natural language
Multi-language programming, much vitality
C language in 1972, python language in 1990
Source Codes (human readable), object code (expert machine)
Disposable convert source code into object code (compiled)
Source code into object code and one by one by performing (explained, similar to the simultaneous interpretation)
Static language, compile and run, run faster, the source code could not be found
Scripting language, interpreted, cross platform, easy to maintain
Algorithm is the soul of the program
Analysis of the problem --- --- demarcation design algorithm programming --- --- --- debug test upgrade and maintenance
Programming is a very interesting thing, abstract interactive, automated execution, computational thinking
Solutions, user experience, efficiency
Improve living and working efficiently to make money
Master the method, it is easy to program
Programming routines, giving top priority
windows，MAC，linux
python, python, PSF (python Software Foundation), open, open source development
Guido van Rossum, python authors, skilled
Python2 is not compatible in order to better develop python3
monty python TV
python123.io, python.org
Interactive (for practice), file programming
Calculating the area of a circle, is calculated to 2 decimal places
Create a file ceshi.py
Results and interactive still differences
Making concentric circles
After each execution draw a circle, closed the program execution is completed
File form generated graphics and the same as above.
Draw five-pointed star, tried it, in the form of a command line interaction can not draw success, you can file form
United States and Britain and other countries use Fahrenheit, TemStr is variable, temperature accurate to two decimal places
Within a single program, the same length of indentation, tab or four spaces and so can be
Naming variables can also occur Chinese
python identifiers defined within retention, 33, for example if, elif, the course will involve black, red does not involve
'123', 123, text and numbers
Forward and reverse declining numbers incrementing number
Line of code assignment is assignment of symbols, a variable is assigned for new data, the eval function evaluation can remove the outermost quotes
input, message string
TemStr [0: -1] is generated string
End of first quarter.