Python Coding challenge - Day 252 | What is the output of the following Python Code?

 

Explanation

num = 5

The variable num is assigned the value 5.

str(num)

The str() function converts the integer num (which is 5) into a string. So:

str(5)  # becomes "5"

Now, "5" is a string representation of the number 5.

"Fun" + str(num)

The string "Fun" is concatenated with the string "5".

So:

"Fun" + "5"  # results in "Fun5"

Now, we have the string "Fun5".

(num - 3)

The expression num - 3 calculates the difference between num and 3.

Since num is 5, we get:

5 - 3  # results in 2

("Fun" + str(num)) * (num - 3)

The string "Fun5" is repeated 2 times (because num - 3 is 2).

String multiplication works by repeating the string the specified number of times.

"Fun5" * 2  # results in "Fun5Fun5"

"Fun5Fun5" + "!"

The string "!" is concatenated to the result of the previous operation, "Fun5Fun5".

So:

"Fun5Fun5" + "!"  # results in "Fun5Fun5!"

Assigning to result:

Now, the final value of the result variable is:

result = "Fun5Fun5!"

print(result)

The print() function outputs the value of result, which is:

Fun5Fun5!

Final Output:

Fun5Fun5!

 Key Concepts:

String Concatenation (+):

The + operator combines strings. In this case, "Fun" and "5" are combined to form "Fun5", and later "Fun5Fun5" is formed by repeating the string.

String Multiplication (*):

The * operator repeats the string a specified number of times. "Fun5" * 2 results in "Fun5Fun5".

Type Conversion:

The str() function converts the integer 5 into the string "5", which allows string concatenation with "Fun".

Final Concatenation:

The result is a string that combines "Fun5Fun5" with "!".