CCNP and CCIE Enterprise Core ENCOR 350-401 Exam Cram by Donald Bacha

Author:Donald Bacha [Donald Bacha]
Language: eng
Format: epub, pdf
Publisher: Pearson IT Certification
Published: 2022-03-19T00:00:00+00:00

Example 12.8 demonstrates the results of Boolean AND, OR, NOT operators.

Example 12.8 Using Boolean AND, OR, NOT Operators

>>> True and False False >>> >>> True or False True >>> >>> not (True or False) False >>>

Objects and expressions in Python always evaluate to True or False, even for variables. This means that a variable such as hostname = switch1 can specify if hostname in a condition. Once there is a value assigned, and it is not null, the condition will evaluate to True; otherwise, it will be False. When working in Python, a conditional statement must end in an indentation, and it must end with a colon. The block of line indented after the colon (:) is executed whenever the condition is TRUE. The colon (:) is important since it separates the condition from the statements that are to be executed after the evaluation of the condition. The three conditional statements are if, elif, and else:

• if: The if statement specifies a conditional to be evaluated.

• elif: The elif optional conditional statement can be used numerous times to check for multiple expressions of True.

• else: The else conditional is the statement that contains the code to execute an action.

Example 12.9 demonstrates the use of the if, elif, and else conditional statements.

Example 12.9 Conditional Statements

>>> switch = 'catalyst 9000' >>> >>> if 'catalyst' in switch: ... switch_type = 'catalyst' ... elif 'nexus' in switch: ... switch_type = 'nexus' ... else: ... switch_type = 'unknown' ... >>> >>> print switch_type catalyst >>>

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.