print() function basics in Python - Step-by-Step Execution

Concept Flow - print() function basics

Start

↓

Call print()

↓

Evaluate arguments

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Convert to string

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Send to output (screen)

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End

The print() function takes inputs, converts them to text, and shows them on the screen.

Execution Sample

Python

print("Hello, world!")

This code prints the text Hello, world! on the screen.

Execution Table

Step	Action	Input	Output
1	Call print()	"Hello, world!"	Prepare to print
2	Evaluate argument	"Hello, world!"	"Hello, world!" as string
3	Send to output	"Hello, world!"	Hello, world! displayed on screen
4	End	-	-

💡 print() finishes after showing the text on the screen

Variable Tracker

Variable	Start	After print() call	Final
argument	None	None	None (print does not store)

Key Moments - 2 Insights

Why does print() show text but not store it in a variable?

print() only sends text to the screen; it does not save or return any value. See execution_table step 3 where output is displayed but no variable changes.

What happens if we print a number instead of text?

The number is converted to text before printing, just like the string. This is shown in execution_table step 2 where input is converted to string.

Visual Quiz - 3 Questions

Look at the execution table, what is the output at step 3?

A The text is displayed on the screen

B The text is stored in a variable

C The program stops running

D Nothing happens

💡 Hint

Check the Output column at step 3 in the execution_table

According to the variable tracker, what happens to the argument variable after print() is called?

A It keeps the printed text

B It becomes None

C It is deleted

D It changes to a number

💡 Hint

Look at the 'After print() call' column for 'argument' in variable_tracker

If we change print("Hello") to print(123), what changes in the execution flow?

A The output will be a number type on screen

B print() will not work with numbers

C The argument is converted to string before printing

D The program will crash

💡 Hint

Refer to concept_flow and execution_table step 2 about argument evaluation

Concept Snapshot

print() function basics:
- Use print() to show text or values on screen
- Arguments are converted to strings automatically
- print() does not save or return values
- Syntax: print(value1, value2, ...)
- Each call outputs on a new line by default

Full Transcript

The print() function in Python is used to show messages or values on the screen. When you call print(), it takes the input you give it, changes it into text if needed, and then shows it on the screen. It does not save the text anywhere or return any value. For example, print("Hello, world!") will display Hello, world! on the screen. The process starts by calling print(), then the input is evaluated and converted to a string, and finally the text is sent to the output. After printing, the program continues or ends. Variables passed to print() do not change or store the printed text. This is important to understand so you know print() is only for showing information, not for storing it.