Types of Statements in Python Programming Language

Types of Statements in Python Programming Language

• 1.
  Flow Control &Statements
• 2.
  Python control structures According to the structure theorem, any computer program can be written using the basic control structures .  A control structure (or flow of control) is a block of programming that analyses variables and chooses a direction in which to go based on given parameters. In simple sentence, a control structure is just a decision that the computer makes. So, it is the basic decision-making process
• 3.
  Flow of control Flowof control through any given program is implemented with three basic types of control structures:  Sequential,  Selection  Repetition
• 4.
  Selection  Python ifstatements
• 5.
  Python if..else statements The else statement is to specify a block of code to be executed, if the condition in the if statement is false. Thus, the else clause ensures that a sequence of statements is executed.
• 6.
  if..elif..else statements
• 7.
  Python Loop /Iteration Statements  Loops are one of the most important features in computer programming languages . As the name suggests is the process that get repeated again and again Every loop has 3 parts:  Initialization  Condition  Updation
• 8.
  Iteration Statements
• 9.
  What is forloop in Python?  The for loop in Python is used to iterate over a sequence (list, tuple, string) or other iterable objects.  Iterating over a sequence is called traversal. Syntax of for Loop for val in sequence: Body of for loop
• 10.
  The range() function We can generate a sequence of numbers using range() function. range(10) will generate numbers from 0 to 9 (10 numbers).  We can also define the start, stop and step size as range(start, stop,step_size). step_size defaults to 1 if not provided. Examples :  print(range(10))  Print(list(range(10))  print(list(range(2, 8)))  print(list(range(2, 20, 3)))
• 11.
  for loop withelse  A for loop can have an optional else block as well. The else part is executed if the items in the sequence used in for loop exhausts. digits = [0, 1, 5] for i in digits: print(i) else: print("No items left.")
• 12.
  What is whileloop in Python?  The while loop in Python is used to iterate over a block of code as long as the test expression (condition) is true.
• 13.
  Python break andcontinue  In Python, break and continue statements can alter the flow of a normal loop.  Loops iterate over a block of code until the test expression is false, but sometimes we wish to terminate the current iteration or even the whole loop without checking test expression.  The break statement terminates the loop containing it. Control of the program flows to the statement immediately after the body of the loop.  The continue statement is used to skip the rest of the code inside a loop for the current iteration only. Loop does not terminate but continues on with the next iteration.
• 14.
  Python break statement Syntaxof break break
• 15.
  The working ofbreak statement in for loop and while loop is shown below.
• 16.
  Python continue statement
• 17.
  The working ofcontinue statement in for and while loop is shown below.