Write the first python program
Let's write now
Our first python program
The first action we first open Sublime
Windows key into sub
Sublime Text 3 was found
This is the software we write the program, open
All gray
We directly enter print 100
Archive now
File
Save
Just archive
There is a shortcut on the right called ctrl s
I suggest everyone use this shortcut ctrl s
I now save to desktop
Create a folder
We are all the same in this folder
Unified coding coding folder
After I go in the coding folder,
My file name is called 123.py
The end of .py is very important
Is to tell the computer that this is a python file
Archive
It has color now
Light blue and purple
So how do we execute this file?
We open cmd
Use the Windows key to open
CMD
Black command prompt
Let ’s zoom out to the desktop first
The created folder coding we open
Then now we have to copy and copy
I click here
I chose all the paths
Then I can right click to copy
I can also press ctrl c to copy
We will now copy this path
This path is inside our computer
The address of this folder
So after we copied this path
Back to cmd, put cd space
Then paste
Paste your folder path
This is the path of my coding folder
Press Enter
cmd is over there
Our present
Just stand inside this coding folder
We can see this file now 123.py
We can execute it later
cd means change directory
Change folder meaning
directory is just a computer term
Actually it means the folder
Then we change the folder
Where to change to this address
So cmd is now at this new address
So that we can execute our program
Type in python 123.py
python space filename
Is how we execute the python program
Press Enter to print out 100 right
As long as you have a way to successfully print 100
It means your successful execution
The first python file of your life
Remember oh python space file name
Is how we execute the python program
The premise is that you have to cd in first
Then look at this program
Why it will print 100
Because we wrote this print
print is a built-in function of python
Is to make it display text
Printed in cmd
It just means printed
In normal life we hear print
I think of the printing of the list machine, etc.
Print in python is just to put it
Just show
So we now call it 100
If I change to 1000 now
I will save it after I change it to 1000
ctrl s archive right
What should I do after I come back to cmd
Execute python 123.py again, right
Enter printed 1000
So we can have a way now
Modify our code and run it again
Do you feel that every time you hit
python 123.py is troublesome
It's troublesome to hit it every time, right?
There is a shortcut key
You press up, down, left, up
You can go back to the previous instruction
Go back to the previous instruction
Enter
So that we can repeat the execution
This is what we practice
The first python program
And we soon realized
What is the function of print
print just prints things
If you are in the future
If you forgot to execute the python program
Remember to watch this video
After we open cmd
First cd to the directory of your folder
Then type the python space file name
You can perform two steps
Supplementary explanation
Just now if some students are curious about your folder
Obviously saved 123.py
But you can't see the end of that .py
File name only shows 123
Why is this so
And my computer shows 123.py
It ’s just because I have turned on that function.
Look at me, check me to check here
Then you see the extension is right
I turned it off
No.py ends
If I check the extension again
It put this extension
.py extension is displayed
That's all
You can open it and close it
It doesn't matter
Simply put, if your ending is not displayed.py
It's actually correct
As long as you have the correct deposit when saving
Then you can see the color here
Light blue purple is correct
