Day 5 - Comments, Escape sequence & Print in Python
Welcome to Day 5 of 100DaysOfCode. Today we will talk about Comments, Escape Sequences and little bit more about print statement in Python. We will also throw some light on Escape Sequences
Python Comments
A comment is a part of the coding file that the programmer does not want to execute, rather the programmer uses it to either explain a block of code or to avoid the execution of a specific part of code while testing.
Single-Line Comments:
To write a comment just add a ‘#’ at the start of the line.
Example 1 #This is a 'Single-Line Comment' print("This is a print statement.") Output: This is a print statement. Example 2 print("Hello World !!!") #Printing Hello World Output: Hello World !!! Example 3: print("Python Program") #print("Python Program") Output: Python Program Multi-Line Comments: To write multi-line comments you can use ‘#’ at each line or you can use the multiline string. Example 1: The use of ‘#’. #It will execute a block of code if a specified condition is true. #If the condition is false then it will execute another block of code. p = 7 if (p > 5): print("p is greater than 5.") else: print("p is not greater than 5.") Output: p is greater than 5. Example 2: The use of multiline string. """This is an if-else statement. It will execute a block of code if a specified condition is true. If the condition is false then it will execute another block of code.""" p = 7 if (p > 5): print("p is greater than 5.") else: print("p is not greater than 5.") Output p is greater than 5. Escape Sequence Characters To insert characters that cannot be directly used in a string, we use an escape sequence character. An escape sequence character is a backslash \ followed by the character you want to insert. An example of a character that cannot be directly used in a string is a double quote inside a string that is surrounded by double quotes: print("This doesnt "execute") print("This will \" execute") More on Print statement The syntax of a print statement looks something like this: print(object(s), sep=separator, end=end, file=file, flush=flush) Other Parameters of Print Statement object(s): Any object, and as many as you like. Will be converted to string before printed sep='separator': Specify how to separate the objects, if there is more than one. Default is ' ' end='end': Specify what to print at the end. Default is '\n' (line feed) file: An object with a write method. Default is sys.stdout Parameters 2 to 4 are optional