Python Tutorials - Selection Statements Decision Making Flow Controls

About Multi Selection

Seeing as you havent had an answer yet, I will just give you an example of what i think you might be trying to achieve BigList 'server1','server2','server3','server4' here we use enumerate to generate the index i for the current item we pass in a temp list with an extra entry concatenated so that we dont need to duplicate the print expression input_list BigList 'Return to main

a decision structure Makes logic of nested decision structures simpler to write Can include multiple elifstatements Syntax if condition_1 statements elif condition_2 statements elif condition_3 statements else statements Insert as many elifclauses as necessary.

Chained conditionals in Python implemented by nested conditionals if cond 1 code_block 1 else if cond 2 code_block 2 else if cond 3 code_block 3 else code_block 4 cond 1 cond 2 cond 3 code block 1 code block 2 code block 3 code block 4 T T T F F F Use 3 conditions to select one of 4 code blocks Note that this whole box is actually a

Using multiple if or ifelse statements The most commonly used multiple selection technique is a combination of if and ifelse statements. This form of selection is often called a selection tree because of its resemblance to the branches of a tree. In this case, you follow a particular path to obtain a desired result.

In Python, the selection statements are also known as decision making statements or branching statements. The selection statements are used to select a part of the program to be executed based on a condition. In Python, When we want to test multiple conditions we use elif statement. The general syntax of if-elif-else statement in Python is

Decision-making by a computer is based on the same two-step process. In Python, decisions are made with the if statement, also known as the selection statement. When processing an if statement, the computer first evaluates some criterion or condition. If it is met, the specified action is performed.

The case control structure is a multi-way selection. Case control structures compare a given value with specified constants and take action according to the first expression to match. 2 Python does not support a case control structure. There are workarounds, but they are beyond the scope of this book. Key Terms

Python Topics. 1 Introduction to Python 2 Variables 3 Input amp Output 4 Operators 5 Comments 6 Selection Structure 7 Repetition Structure 8 Functions 9 Arrays Topic 6 Selection Structure. If Statements. Selection structure is used when a decision has to be made, based on some condition, before selecting an instruction to

The control flow of a Python program is regulated by conditional statements, loops, and function calls. Python has three types of control structures Sequential - default mode Selection - used for decisions and branching Repetition - used for looping, i.e., repeating a piece of code multiple times. 1. Sequential

Python Control Structures Selection 3 Outcomes By the end of this chapter you should be able to explain the difference between sequence and selection use an if statement to make a single choice in a program use an ifelse statement to make a choice between two options in a program