Indentation in python
In Python, indentation is used to define blocks of code. It tells the Python interpreter that a group of statements belongs to a specific block. All statements with the same level of indentation are considered part of the same block. Indentation is achieved using whitespace (spaces or tabs) at the beginning of each line.
a = 20
if a >= 18:
print('hello')
else:
print('world')
print('python")