IV. Implementation of two ways Python

The first interactive, run in cmd

· Jupyter a progressive package of these
advantages: Direct output
Cons: Can not save

The second imperative, by cmd enter text python3

1. txt file can, py file may be, the command may identify any text file type
   advantages: can be saved
   disadvantages: the feedback can not be given

   Three steps

2. Write python file
3. Find python path, only the equivalent of a text editor (read from the hard disk into the content), open the file the moment there is no concept of grammar, print ( "hello mmm") is just a bunch of ordinary characters

4. python syntax of this concept will appear when content is running and resolution, will print "hello mmm"

· Pycharm this a progressive package