Skip to main content

Pyhon Loop statements

Loops are a fundamental concept in Python that allow you to execute a block of code repeatedly. Python supports two types of loops: for loops and while loops. Here's a detailed overview of how to use loops in Python:

1. for Loops

The for loop in Python is used to iterate over a sequence (such as a list, tuple, dictionary, set, or string).

Basic for Loop


Iterating Over a String


Using range()

The range() function generates a sequence of numbers, which is useful for creating loops with a specific number of iterations.


Using range() with Start, Stop, and Step



2. while Loops

The while loop executes as long as a specified condition is true.

Basic while Loop


3. Control Statements in Loops

break Statement

The break statement is used to exit the loop prematurely when a certain condition is met.


continue Statement

The continue statement skips the current iteration and moves to the next iteration of the loop


else Clause with Loops

The else clause in a loop executes after the loop completes normally (i.e., not terminated by break).


Summary

  • for loop: Used for iterating over a sequence (list, string, etc.).
  • while loop: Repeats as long as a condition is true.
  • break statement: Exits the loop prematurely.
  • continue statement: Skips the current iteration.
  • else clause with loops: Executes after the loop completes normally.

Loops are essential for tasks that require repetitive execution of code, and mastering them will significantly enhance your ability to write efficient and effective Python programs.

Comments

Post a Comment

Popular posts from this blog

Power BI tenant settings and admin portal

As of my last update, Power BI offers a dedicated admin portal for managing settings and configurations at the tenant level. Here's an overview of Power BI tenant settings and the admin portal: 1. Power BI Admin Portal: Access : The Power BI admin portal is accessible to users with admin privileges in the Power BI service. URL : You can access the admin portal at https://app.powerbi.com/admin-portal . 2. Tenant Settings: General Settings : Configure general settings such as tenant name, regional settings, and language settings. Tenant Administration : Manage user licenses, permissions, and access rights for Power BI within the organization. Usage Metrics : View usage metrics and reports to understand how Power BI is being used across the organization. Service Health : Monitor the health status of the Power BI service and receive notifications about service incidents and outages. Audit Logs : Access audit logs to track user activities, access requests, and administrative actions wit...
Post a Comment
Read more

Performance Optimization

Performance optimization in SQL is crucial for ensuring that your database queries run efficiently, especially as the size and complexity of your data grow. Here are several strategies and techniques to optimize SQL performance: Indexing Create Indexes : Primary Key and Unique Indexes : These are automatically indexed. Ensure that your tables have primary keys and unique constraints where applicable. Foreign Keys : Index foreign key columns to speed up join operations. Composite Indexes : Use these when queries filter on multiple columns. The order of columns in the index should match the order in the query conditions. Avoid Over-Indexing:  Too many indexes can slow down write operations (INSERT, UPDATE, DELETE). Only index columns that are frequently used in WHERE clauses, JOIN conditions, and as sorting keys. Query Optimization Use SELECT Statements Efficiently : SELECT Only Necessary Columns : Avoid using SELECT * ; specify only ...
Post a Comment
Read more

DAX UPPER Function

The DAX UPPER function in Power BI is used to convert all characters in a text string to uppercase. This function is useful for standardizing text data, ensuring consistency in text values, and performing case-insensitive comparisons. Syntax: UPPER(<text>) <text>: The text string that you want to convert to uppercase. Purpose: The UPPER function helps ensure that text data is consistently formatted in uppercase. This can be essential for tasks like data cleaning, preparing text for comparisons, and ensuring uniformity in text-based fields. E xample: Suppose you have a table named "Customers" with a column "Name" that contains names in mixed case. You want to create a new column that shows all names in uppercase. UppercaseName = UPPER(Customers[Name]) Example Scenario: Assume you have the following "Customers" table: You can use the UPPER function as follows: Using the UPPER function, you can convert all names to uppercase: UppercaseName = ...
Post a Comment
Read more