Statements

Instructions written in the source code for execution are called statements. There are different types of statements in the Python programming language like Assignment statements, Conditional statements, Looping statements, etc. These all help the user to get the required output. For example, n = 50 is an assignment statement.

Multi-Line Statements:

Statements in Python can be extended to one or more lines using parentheses (), braces {}, square brackets [], semi-colon (;), continuation character slash (\). When the programmer needs to do long calculations and cannot fit his statements into one line, one can make use of these characters. 

Example : 

In Python, statements are instructions that are executed by the interpreter. A statement is usually a line of code that tells the computer to perform some action or computation. For example, the assignment statement x = 5 tells the computer to assign the value 5 to the variable x. Other examples of statements include control flow statements like if, for, and while loops, and function definitions.

Indentation is an important part of Python syntax. Unlike other programming languages that use brackets or parentheses to delimit blocks of code, Python uses indentation. Indentation is used to indicate the start and end of a block of code, such as a loop or conditional statement. In Python, it's common to use four spaces for each level of indentation.

Comments in Python are used to explain the code and make it more readable. They are ignored by the interpreter and don't affect the program's execution. Comments are preceded by the hash symbol (#) and can be placed on a line by themselves or at the end of a line of code. They are often used to provide documentation for functions or to explain the purpose of certain lines of code. For example: 

# This function adds two numbers together
def add_numbers(x, y):
    return x + y

In summary, statements are instructions that are executed by the interpreter, indentation is used to delimit blocks of code, and comments are used to explain the code and make it more readable.