Display Results with print()

What you will learn

By the end of this lesson, you'll understand:

• Why do we use the pre-defined function print()?
• What is Syntax-1: printing values?
• What is Syntax-2: printing string messages?
• What is Syntax-3: printing messages cum values?

What is print()?

In the previous lesson you stored values in variables such as a, b, and c. Now you will display those values on screen.

print() is a pre-defined Python function used to display the result of a Python program on the console.

Program flow

Purpose: display values, messages, or both to the user.

Syntax-1: print values

Use this syntax to display values or variable values.

print(Val1)
print(Val1, Val2, ..., Val_n)

Here, Val1, Val2, and so on represent numeric values or variables.

Example 1 — single value (PrintValEx1.py)

# PrintValEx1.py
a = 10
print(a)

10

print() displays the value stored inside a.

Example 2 — multiple values (addex1.py)

This is the uploaded Batch Mode file:

# addex1.py — adding of two numbers
a = 10
b = 20
c = a + b
print(a)
print(b)
print(c)

10
20
30

One print() with several values:

# PrintValEx2.py
a = 10
b = 20
c = a + b
print(a, b, c)
print(100, 200, 300)

10 20 30
100 200 300

Important rule

When multiple values are separated by a comma, Python inserts a space.

Code	Output
print(1, 2)	1 2
print(10, 20, 30)	10 20 30
print(a, b, c)	10 20 30

Syntax-2: print string messages

Use this syntax to display messages (strings).

print(msg1)
print(msg1, msg2)
print(msg1 + msg2)

Here msg1 and msg2 are string values.

Example 1 — single message (PrintMsgEx1.py)

# PrintMsgEx1.py
print("Hello Python Students")

Hello Python Students

Example 2 — multiple messages with comma (PrintMsgEx2.py)

# PrintMsgEx2.py
print("Hello", "Python", "Students")

Hello Python Students

Python inserts spaces because commas separate the strings.

Example 3 — concatenation with + (PrintConcatEx.py)

# PrintConcatEx.py
print("Hello" + "Python" + "Prog")

HelloPythonProg

There are no spaces. Put spaces inside the string if you need them:

print("Hello" + " Python" + " Prog")

Hello Python Prog

Comma vs plus (+)

This is one of the most important beginner ideas.

Comma (PrintCommaEx.py):

print("Hello", "Python")

Hello Python

Plus (PrintPlusEx.py):

print("Hello" + "Python")

HelloPython

Syntax-3: messages cum values

This syntax displays messages together with variable values.

Example 1 — addex2.py

This is the uploaded Batch Mode file:

# addex2.py — adding of two numbers
a = 10
b = 20
c = a + b
print("*" * 50)
print("Val of a=", a)
print("Val of b=", b)
print("sum=", c)
print("*" * 50)

Shorter mix from the notes (PrintMixEx1.py):

# PrintMixEx1.py
a = 10
print("Val of a=", a)
print(a, "is the val of a")

Val of a= 10
10 is the val of a

The comma lets you mix strings and variables in the same print().

Example 2 — sum of two numbers (PrintMixEx2.py)

# PrintMixEx2.py
a = 10
b = 20
c = a + b
print("sum=", c)
print(c, "is the sum")
print("sum of", a, "and", b, "=", c)

sum= 30
30 is the sum
sum of 10 and 20 = 30

Python combines the message and the values into one readable line.

Example 3 — sum of three numbers (PrintSum3Ex.py)

# PrintSum3Ex.py
a = 10
b = 20
c = 30
d = a + b + c
print("Sum of", a, ",", b, "and", c, "=", d)

Sum of 10 , 20 and 30 = 60

This follows the structure in your Display Result notes.

Three syntaxes at a glance

Syntax	Purpose	Example file
Syntax-1	Values	addex1.py, PrintValEx1.py
Syntax-2	Messages	PrintMsgEx1.py, PrintConcatEx.py
Syntax-3	Messages + values	addex2.py, PrintMixEx2.py

Real-world example (StudentPrintEx.py)

# StudentPrintEx.py
name = "Mahesh"
age = 25
print("Student Name:", name)
print("Age:", age)
print(name, "is", age, "years old")

Student Name: Mahesh
Age: 25
Mahesh is 25 years old

This is the same messages cum values pattern used in real applications.

Key terms

Term	Meaning
print()	Pre-defined function for console output
Console	The screen where output is displayed
String	Text enclosed in quotes
Variable	A named storage location for a value
Concatenation	Joining strings using +

Summary

• print() is the console output function in Python
• Syntax-1 displays values or variables (addex1.py)
• Syntax-2 displays string messages (PrintMsgEx1.py)
• Syntax-3 displays messages together with values (addex2.py)
• Comma (,) inserts spaces automatically
• Plus (+) concatenates strings without adding spaces

Quick knowledge check

1. Which pre-defined function displays output on the console?
   print()

2. What is the difference between comma and + in print()?
   Comma adds spaces automatically; + joins strings without spaces.

3. Which uploaded file shows messages cum values for the add program?
   addex2.py

4. What is the output of print("A", "B")?
   A B

Next lesson: format() and format specifiers.