Part 1 - Start Python Programming

Computer programs consist of commands, that is, simple instructions that the machine executes one at a time. Commands can, for example, perform calculations, compare data in the machine's memory, cause a change in the operation of the program, or convey messages and query the user for information.

Let's start learning about programming with a simple command print, which prints text. Printing basically means that the program displays text on the screen.

For example, the following program prints the line "Hello everyone!":

print ("Hello everyone!")

When we run the program, it produces the following result:

Hey everyone!

Note that the program code must be written exactly as above for it to work. For example, if we try to print a line without using quotation marks

print (Hi everyone!)

the program does not work and results in the following error message:

So Python can't interpret printable text correctly if it's not in quotation marks.

Program progress

When you write several commands in a row, they are performed in order from top to bottom. For example, a program

print ("Welcome to learning programming!")
print ("Practice using the print command first.")
print ("This program prints three lines of text on the screen.")

print the following lines on the screen:

Welcome to learn programming! First, practice using the print command. This program prints three lines of text on the screen.