Checking data types in Data Analysis Python - Step-by-Step Execution

Concept Flow - Checking data types

Start with data

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Select variable or value

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Use type() function

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Get data type result

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Use data type info for decisions or display

This flow shows how to check the type of any data value using the type() function in Python.

Execution Sample

Data Analysis Python

x = 10
print(type(x))
y = 'hello'
print(type(y))

This code checks and prints the data types of two variables, one integer and one string.

Execution Table

Step	Code Line	Variable	Action	Output
1	x = 10	x	Assign integer 10 to x
2	print(type(x))	x	Check type of x	<class 'int'>
3	y = 'hello'	y	Assign string 'hello' to y
4	print(type(y))	y	Check type of y	<class 'str'>
5	End		No more code to run	Execution stops

💡 All lines executed, program ends

Variable Tracker

Variable	Start	After Step 1	After Step 3	Final
x	undefined	10	10	10
y	undefined	undefined	hello	hello

Key Moments - 2 Insights

Why does print(type(x)) show <class 'int'> instead of just 'int'?

The type() function returns a type object, which prints as <class 'int'>. This means x is an integer type. See execution_table row 2 for the output.

Can type() be used on values directly, not just variables?

Yes, type() works on any value or expression. For example, type(3.14) returns <class 'float'>. This is similar to what happens in execution_table rows 2 and 4.

Visual Quiz - 3 Questions

Look at the execution_table at step 2, what is the output of type(x)?

A int

B <class 'str'>

C <class 'int'>

D 10

💡 Hint

Check the Output column in execution_table row 2

At which step is the variable y assigned a value?

A Step 1

B Step 3

C Step 2

D Step 4

💡 Hint

Look at the Code Line and Variable columns in execution_table

If we change x = 10 to x = 3.14, what would print(type(x)) output at step 2?

A <class 'float'>

B <class 'int'>

C <class 'str'>

D 3.14

💡 Hint

Recall that 3.14 is a floating point number, so type() returns

Concept Snapshot

Checking data types in Python:
- Use type(variable) to find the data type
- Returns a type object like <class 'int'> or <class 'str'>
- Works on variables or direct values
- Helps understand data for processing or debugging

Full Transcript

This lesson shows how to check data types in Python using the type() function. We assign values to variables x and y, then print their types. The output shows <class 'int'> for x=10 and <class 'str'> for y='hello'. The type() function returns the data type object, which helps us know what kind of data we are working with. This is useful for making decisions in code or debugging. The execution table traces each step and output clearly.