Understanding the print() Function in Python: Syntax, Parameters, and Formatting

The print() function is the most common way to output data in Python. In Python 3 it is a built‑in function, while in Python 2 it behaved as a statement.

Syntax: print(*objects, sep=' ', end='\n', file=sys.stdout)

Parameters: - objects : one or more objects to be printed, separated by commas. - sep : string inserted between objects (default is a single space). - end : string appended after the last object (default is a newline). - file : a file‑like object to receive the output (default is sys.stdout ).

Examples of printing different data types: print(1) # 1 print("Hello World") # Hello World x = 12 print(x) # 12 s = 'Hello' print(s) # Hello L = [1, 2, 'a'] print(L) # [1, 2, 'a'] t = (1, 2, 'a') print(t) # (1, 2, 'a') d = {'a': 1, 'b': 2} print(d) # {'a': 1, 'b': 2}

Formatted output using the C‑style % operator: s = 'Hello' x = len(s) print("The length of %s is %d" % (s, x)) # The length of Hello is 5

Common format specifiers include: d, i → signed decimal integer o → unsigned octal u → unsigned decimal x, X → unsigned hexadecimal (lower/upper case) e, E → scientific notation (lower/upper case) f, F → decimal floating point g, G → uses %e or %f depending on value c → single character r → repr() of object s → str() of object

Controlling line endings (preventing the default newline): for x in range(10): print(x, end='') # 0123456789

String concatenation example and a common mistake: x = "Hello" y = "world" print(xy) # NameError: name 'xy' is not defined print(x + y) # Helloworld