What is if...else statement in Python?Decision making is required when we want to execute a code only if a certain condition is satisfied. Show
The Python if Statement Syntaxif test expression: statement(s) Here, the program evaluates the If the test expression is In
Python, the body of the Python interprets non-zero values as Python if Statement FlowchartFlowchart of if statement in Python programmingExample: Python if Statement
When you run the program, the output will be: 3 is a positive number This is always printed This is also always printed. In the above example, The body of When the variable num is equal to 3, test expression is true and statements inside the body of If the variable num is equal to -1, test expression is false and statements inside the body of The Python if...else StatementSyntax of if...elseif test expression: Body of if else: Body of else The If the condition is Python if..else FlowchartFlowchart of if...else statement in PythonExample of if...else
Output Positive or Zero In the above example, when num is equal to 3, the test expression is true and the body of If num is equal to -5, the test expression is false and the body of If num is equal to 0, the test expression is true and body of Python if...elif...else StatementSyntax of if...elif...elseif test expression: Body of if elif test expression: Body of elif else: Body of else The If the condition for If all the conditions are Only one block among the several The Flowchart of if...elif...elseFlowchart of if...elif....else statement in PythonExample of if...elif...else
When variable num is positive, Positive number is printed. If num is equal to 0, Zero is printed. If num is negative, Negative number is printed. Python Nested if statementsWe can have a Any number of these statements can be nested inside one another. Indentation is the only way to figure out the level of nesting. They can get confusing, so they must be avoided unless necessary. Python Nested if Example
Output 1 Enter a number: 5 Positive number Output 2 Enter a number: -1 Negative number Output 3 Enter a number: 0 Zero What is the if condition used for?The IF function is one of the most popular functions in Excel, and it allows you to make logical comparisons between a value and what you expect. So an IF statement can have two results. The first result is if your comparison is True, the second if your comparison is False.
Which is faster if else or while?A WHILE statement loop will execute much faster than an IF statement loop in applications where the loop is placed many commands into a program. Consider, for example, a loop placed at the end of a very long program.
Which loop is better for or while?Efficiency, and While vs For
Using for: % Time elapsed: 0.0010001659 seconds. Using while: % Time elapsed: 0.026000023 seconds. The main reason that While is much slower is because the while loop checks the condition after each iteration, so if you are going to write this code, just use a for loop instead.
What is the condition used in while loop?The condition may be any expression, and true is any nonzero value. The loop iterates while the condition is true. When the condition becomes false, the program control passes to the line immediately following the loop.
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