Comparison operators in Python - Step-by-Step Execution

Concept Flow - Comparison operators

Start with two values

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Apply comparison operator

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Evaluate condition: True or False?

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Use result in program

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End

Comparison operators check how two values relate and give True or False as result.

Execution Sample

Python

a = 5
b = 3
result = a > b
print(result)

This code compares if 5 is greater than 3 and prints the result.

Execution Table

Step	Expression	Evaluation	Result
1	a = 5	Assign 5 to a	a = 5
2	b = 3	Assign 3 to b	b = 3
3	result = a > b	Is 5 greater than 3?	True
4	print(result)	Print the value of result	True

💡 Program ends after printing the comparison result True

Variable Tracker

Variable	Start	After Step 1	After Step 2	After Step 3	Final
a	undefined	5	5	5	5
b	undefined	undefined	3	3	3
result	undefined	undefined	undefined	True	True

Key Moments - 3 Insights

Why does 'a > b' give True instead of a number?

Comparison operators return True or False, not numbers. See execution_table step 3 where 'result = a > b' evaluates to True.

What happens if a and b are equal with 'a > b'?

If a equals b, 'a > b' is False because 5 is not greater than 5. The condition must be strictly greater.

Can comparison operators be used with other types like strings?

Yes, but they compare based on alphabetical order or other rules. For example, 'apple' < 'banana' is True.

Visual Quiz - 3 Questions

Look at the execution table, what is the value of 'result' after step 3?

A False

B True

C 5

D 3

💡 Hint

Check the 'Result' column in execution_table row with Step 3.

At which step is the variable 'b' assigned a value?

A Step 1

B Step 3

C Step 2

D Step 4

💡 Hint

Look at the 'Expression' column in execution_table to find when 'b = 3' happens.

If we change 'a = 5' to 'a = 2', what will 'result' be at step 3?

A False

B True

C 5

D 2

💡 Hint

Compare new 'a' value with 'b' in the condition 'a > b' at step 3.

Concept Snapshot

Comparison operators compare two values and return True or False.
Common operators: >, <, >=, <=, ==, !=
Used to check conditions in programs.
Example: 5 > 3 is True.
They do not return numbers, only boolean results.

Full Transcript

This visual trace shows how comparison operators work in Python. We start by assigning values to variables a and b. Then we compare a > b, which checks if a is greater than b. The result is True or False, not a number. Finally, we print the result. The variable tracker shows how a, b, and result change step by step. Key moments clarify common confusions like why the comparison returns True/False and how equality affects the result. The quiz tests understanding by asking about variable values and outcomes at specific steps.