Question

Python uses indention in its program structures. How do you define the syntax of a language construct that uses indention? Give an example to describe.

Answer 1

Python programming language uses indentation as its building block of syntax.

As seen in maximum of other programming languages, flower brackets are used to limit or define the scope of code. For example scope of function or scope of if-else block or scope of for loop.

But in python it is entirley different. It follows indentation to define the scope of its code parts.

Indentation means proper spacing.

For example i will give an example of for loop in both java and python languages. Iam adding java code to let you understand the syntax difference between python and other major programming languages.

code to print Hi 10 times
In java

for(int i=0;i<10;i++){

System.out.println("Hi");

}

see in above code, java has braces to define its scope to for loop.

In Python

for i in range(10):
print("Hi")
print("Bye")
  
See in above code, python has indentation rule to define its scope to for loop.
You can see a space infront of print in the second line. It keeps the print("Hi") statement inside the for loop.
print("Bye") has no space infront of it and it is relativly placed with for loop. So it wont be inside for loop. This statement will be print into console after printing "Hi" 10 times.

Above given example was simple one.

Now i will show you example of if-else block inside a for loop.

for i in range(10):
if i%2==0:
   print("Even")
   else:
   print("Odd")
      
In the above code you can see if-else statement inside for loop.

If statement is placed after giving a proper space inside for loop, which must be exactly followed by else statement. We can easily construct syntax in python keeping indentation and proper spacing and relative place of statement starting point.

Feel free to ask if you find any difficulty
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