Brendan Metcalfe
Python 3 len() built-in function TUTORIAL
updated
Timestamps:
0:00 - Is Coding Really Dead in 2026?
0:45 - The Real Job Market Numbers Right Now
2:30 - How AI Changes Who Wins and Loses
4:30 - Skills You Need to Thrive Today
6:45 - Why Coding Still Pays Off Big
It handles petabyte-scale data, crunches billions of rows per second, and delivers SQL queries in milliseconds—perfect for dashboards, logs, observability, time-series, and big data insights without breaking the bank. We cover: what makes it columnar vs row-oriented, key features (speed, compression, distributed clusters), why it's exploding in popularity, and real-world use cases. Whether you're a dev, data engineer, or just curious about the hottest OLAP tool, this is your intro!
#ClickHouse #OLAP #Database #BigData #RealTimeAnalytics #OpenSource #DataEngineering #2026Tech #AnalyticsDatabase
Timestamps:
0:00 - Intro: Why ClickHouse is Exploding in 2026
0:30 - What is ClickHouse? Core Definition & History
1:10 - Column-Oriented Magic: Why It's So Much Faster Than Row Databases
1:50 - Key Features: Blazing Speed, Compression, SQL, Distributed Power
2:40 - Real-Time OLAP: Use Cases (Logs, Dashboards, Time-Series, BI)
3:30 - Who Uses It? Big Names & Why Devs Love It
4:00 - Pros, Cons & Getting Started Quick Tips
4:40 - Conclusion: Is ClickHouse Right for You? + Call to Action
Timestamps:
0:00 - Why NestJS is a Game-Changer for Node.js Developers in 2026
0:49 - What is NestJS? Core Overview and Key Features
3:00 - Latest Updates in NestJS Version 11
4:20 - Who Should Use NestJS and System Requirements
5:33 - Step-by-Step: Creating Your First NestJS Application
7:56 - Generating Modules, Controllers, and Services with the CLI
9:44 - Adding Validation, Databases, and Advanced Features
11:00 - Top Benefits of NestJS for Scalable Backends
12:33 - Common Downsides and When to Avoid NestJS
13:11 - Final Thoughts on Choosing NestJS in 2026
13:33 - Thanks for Watching – Like, Subscribe, and Comment!
For more: youtu.be/CZKlYMgzO1U
The exam, which is based on the EC-Council’s Certified Ethical Hacker syllabus, tests you on 20 key domains. These include things like footprinting and reconnaissance (how hackers gather info about a target), scanning networks (finding vulnerabilities), enumeration (digging deeper into systems), system hacking (exploiting weaknesses), and malware threats (like viruses, worms, and trojans). You’ll also learn about social engineering – that’s when hackers trick people into giving up sensitive info, like through phishing emails – as well as denial-of-service attacks, session hijacking, and even how to hack web applications and wireless networks. It’s a broad, hands-on look at the tools and techniques hackers use, from sniffing network traffic to cracking passwords.
The CEH exam itself is a 4-hour, multiple-choice test with 125 questions. You need to score at least 70% to pass, and it’s not an easy ride – the questions are designed to test your real-world understanding, not just memorization. The EC-Council updates the exam regularly to keep up with new threats, so you’ll be learning cutting-edge stuff. Once you pass, you earn the CEH credential, which is globally recognized and respected in the cybersecurity industry. But here’s the catch: to maintain your certification, you’ll need to earn continuing education credits or retake the exam every three years. It’s their way of ensuring you stay sharp and up-to-date in a field that changes fast.
Learn cyber here: bowtiedcyber.com/?ref=5
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So, let’s break down what sharding and partitioning are, how they differ, and where they overlap.
Enjoy the city life and sunset views along the Paraguay river!
Timestamps:
0:00 Costanera de Asuncion
3:30 Beach of Asuncion, Paraguay
8:00 Sunset in Asuncion
13:50 Palacio Lopez
15:30 Port of Asuncion
22:30 Palacio Lopez at Night
🛠 Affiliate Links to Tools I Use:
Google Fi - https://g.co/fi/r/881EJW
Novo Bank - onboarding.banknovo.com/signup?referral_code=BrendanMetcalfe
Transferwise - wise.com/invite/u/brendanm223
Coinbase (Get $10 when you invest $100) - coinbase.com/join/metcal_a1
Learn how to use CoinMarketCap API and get realtime cryptocurrency data via an API.
Timestamps:
0:00 Intro
1:02 Step 1: Sign up for Coinmarketcap.com account
1:15 Step 2: Get API Key
2:04 Developer Docs
3:05 Step 3: Make API Requests
4:55 API Requests Using Python
10:45 Coinmarketcap API Endpoints and Categories
🛠 Affiliate Links to Tools I Use:
Google Fi - https://g.co/fi/r/881EJW
Novo Bank - onboarding.banknovo.com/signup?referral_code=BrendanMetcalfe
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Filmed in the morning.
Wikipedia:
es.wikipedia.org/wiki/Santa_Ana_(Panam%C3%A1)
🛠 Affiliate Links to Tools I Use:
Google Fi - https://g.co/fi/r/881EJW
Novo Bank - onboarding.banknovo.com/signup?referral_code=BrendanMetcalfe
Transferwise - wise.com/invite/u/brendanm223
Sajonia is a neighborhood in Asunción, one of the most traditional in the capital of Paraguay. Sumptuous residences from the late 1800s and early 1900s can be seen in the neighborhood, when it housed many of the wealthiest families in Asunción.
Video filmed around July 2021.
🇵🇾🇵🇾
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✈️ Wikipedia:
es.wikipedia.org/wiki/Sajonia_(Asunci%C3%B3n)
🛠 Affiliate Links to Tools I Use:
Google Fi - https://g.co/fi/r/881EJW
Novo Bank - onboarding.banknovo.com/signup?referral_code=BrendanMetcalfe
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Driving tour from the highway, up the lush winding hills, and into to the Valle de Anton all the way to the town center.
360 views of the famous painted ceiling and works of Michelangelo.
Hidden camera on the Sistine chapel tour
Casco Viejo (Spanish for Old Quarter), also known as Casco Antiguo or San Felipe, is the historic district of Panama City. Completed and settled in 1673, it was built following the near-total destruction of the original Panamá city, Panamá Viejo in 1671, when the latter was attacked by pirates. It was designated a World Heritage Site in 1997.
Timestamps:
0:00 Intro
2:18 Avenida B
9:10 Iglesia San Francisco de Asís
14:05 Ocean Views
20:00 Plaza de Francia
25:00 Casco Viejo
29:30 Iglesia de San Jose - Altar de Oro
34:00 Casco Viejo
36:30 Iglesia de La Merced
41:00 Museum of Iglesia de La Merced
53:45 Returning to Starting Point at Avenida B
🇵🇦🇵🇦🇵🇦
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Sunset views of Panama City on this famous walking path.
🇵🇦🇵🇦🇵🇦
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🇵🇾🇵🇾
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🇵🇾🇵🇾
✈️ Book Your Next Trip with Hostel World:
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Recorrido virtual a pie por los mercados, shopping malls, y el centro de Ciudad del Este, Paraguay.
Timestamps:
0:00 Avenida Adrian Jara (and more)
13:02 Rotonda Oasis
13:56 Avenida San Blás
Parque IPS es uno de los parques más popular y más frecuentado de Asunción, Paraguay.
Timestamps:
0:00-0:28 Intro
0:29-5:50 Banco Central de Paraguay y Avenida Federacion Rusa
5:51-8:40 Paseo Bicentennial
8:41 Caminata Parque IPS
Recuperé algunas imágenes que pensé haber perdido, así que aquí hay una parte 2 de la costanera de Encarnación!
Walking tour of the beaches and Costanera de Encarnación, Paraguay. The sunsets are like this every single day!
Recorrido a pie por las playas y Costanera de Encarnación, Paraguay. Los atardeceres son así todos los días!
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Recuperé algunas imágenes que pensé haber perdido, así que aquí hay una parte 2 del centro de Encarnación!
Walking tour of Encarnación, Paraguay. Virtual tour videowalk in Encarnación, Itapúa, Paraguay.
Tour a pie por el centro de Encarnación, Paraguay. Videowalk Encarnacion.
🇵🇾🇵🇾
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See what it's like on the famous beaches of Encarnación, the summer city located on the Paraguay side of the Paraná river. The sunsets are like this every single day!
Recorrido a pie por las playas y Costanera de Encarnación, Paraguay. Videowalk tour virtual en Encarnación, Itapúa, Paraguay.
Vea cómo es en las famosas playas de Encarnación, la ciudad veraniega ubicada en el lado de Paraguay del río Paraná. ¡Los atardeceres son así todos los días!
Timestamps:
0:00-0:33 Map of Encarnacion Costanera
0:34-02:35 Views of Bridge to Argentina and Posadas
02:36-14:15 Walking the Lower Costanera
14:16-26:27 Playa San José
26:28 Walking the Upper Costanera
🇵🇾🇵🇾
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See what it's like in the downtown of Encarnación, the summer city located on the Paraguay side of the Paraná river.
Tour a pie por el centro de Encarnación, Paraguay. Videowalk Encarnacion.
Vea cómo es el centro de Encarnación, la ciudad veraniega ubicada en el lado de Paraguay del río Paraná.
Timestamps:
0:00-0:33 Maps of Encarnacion
0:34-02:15 Escalinata San Pedro
02:16-08:15 Puente Carlos A. Lopez
08:16-16:47 Encarnacion Centro
16:48-19:00 Bus Terminal
19:01-26:27 Más Encarnacion Centro
26:28 Back to the Costanera
🇵🇾🇵🇾
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See what it's like in the famous markets of Ciudad Del Este, the city located on the Paraguayan border with Brasil. See where to shop! At the end of the video we also visit Lago de la Republica.
Tour a pie por Ciudad del Este, Paraguay. Videowalk CDE.
Vea cómo es en los famosos mercados de Ciudad del Este, la ciudad fronteriza de Paraguay. Mira donde hacer tus compras. Al final del video también visitamos el Lago de la República.
Timestamps:
0:00-0:40 Maps of Ciudad Del Este
0:41-08:20 Calle Monsenor Rodriguez
08:21-11:36 Entering the Labyrinth
11:37-12:37 Mina India
12:38-21:50 Calle Camino Recalde
21:51-28:48 Rotunda Oasis and Walk to Lake
28:49 Lago De La Repubica
🇵🇾🇵🇾
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Villa Morra and Recoleta are among the richest and most upscale neighborhoods in the city. Most of Paraguay is not on Google street view, so this may be the first time some of these street corners have ever been filmed.
🇵🇾🇵🇾
Una caminata/videowalk por los barrios de Villa Morra y Recoleta en Asuncion, Paraguay.
Villa Morra y Recoleta se encuentran entre los barrios más ricos y exclusivos de la ciudad. La mayor parte de Paraguay no está en Google Street View, por lo que esta puede ser la primera vez que se filman algunas de estas esquinas.
Timestamps:
0:00-14:00 Villa Morra
14:01-15:45 Plaza Olimpica, Villa Morra
15:46-24:00 Avenida España, Villa Morra
24:01-26:10 Plaza Manuel Ortiz Guerrero
26:01-28:25 Avenida Mariscal Lopez
28:26-30:00 Club Centenario
30:01-37:20 Calle Chaco Boreal hasta Barcos & Rodados
37:21-57:00 Recoleta
57:01 Villa Morra hasta Hard Rock Cafe
🇵🇾🇵🇾
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After this video you will know how to use the .startswith() string method.
Timestamp:
0:00-0:54 Intro
0:55-2:03 Startswith documentation
2:11-3:20 Passing strings
3:21-4:32 Passing tuples
4:33-6:15 Passing variables
6:16-9:20 Start optional argument
9:21-10:49 End optional argument
10:50-12:27 Startswith Loop Example
12:08 Outro
🐍 Python Docs:
docs.python.org/3/library/stdtypes.html#str.startswith
💻 Python String Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt8Qa-90WL9LKTp8_4fvk6eS
💻 Python List Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt9vwky84Lp-5pK4ckzKbnTo
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After this video you will know how to use the .endswith() string method.
Timestamp:
0:00-0:58 Intro
0:59-2:10 Endswith documentation
2:11-3:05 Passing strings
3:06-4:20 Passing tuples
4:21-5:43 Passing variables
5:44-7:24 Start optional argument
7:25-8:35 End optional argument
8:36-12:08 Endswith String Example
12:09 Endswith Email Example
🐍 Python Docs:
docs.python.org/3/library/stdtypes.html#str.endswith
💻 Python String Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt8Qa-90WL9LKTp8_4fvk6eS
💻 Python List Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt9vwky84Lp-5pK4ckzKbnTo
📖 Please check out my Udemy course here:
udemy.com/course/the-python-built-in-function-tutorial-series
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CodingBat Python sum3 answer. List 1.
Timestamps:
0:00-0:13 Intro
0:14-0:26 The Question
0:27-0:49 Analyze Question
0:50-1:26 First Solution with sum()
1:27-2:18 Second Solution with addition
2:19-3:49 Third Solution with for loop
3:50 Outro
sum3 Question:
Given an array of ints length 3, return the sum of all the elements.
sum3([1, 2, 3]) → 6
sum3([5, 11, 2]) → 18
sum3([7, 0, 0]) → 7
💻 sum3 - link to original question on CodingBat.com:
codingbat.com/prob/p191645
💻 Python String Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt8Qa-90WL9LKTp8_4fvk6eS
💻 Python List Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt9vwky84Lp-5pK4ckzKbnTo
📖 Please check out my Udemy course here:
udemy.com/course/the-python-built-in-function-tutorial-series
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CodingBat Python List-1 max_end3 answer.
Timestamps:
0:00-0:09 Intro
0:10-0:22 The Question
0:23-0:53 Analyze Question
0:54-1:43 How to Use max() Built-In Function
1:44-2:24 Building First Solution
2:25-2:40 First Solution with max()
2:41-4:00 Second Solution with max()
4:01-4:33 Third Solution with max()
4:34 -6:14 First Solution without max()
6:15 Final Solution without max()
max_end3 Question:
Given an array of ints length 3, figure out which is larger, the first or last element in the array, and set all the other elements to be that value. Return the changed array.
max_end3([1, 2, 3]) → [3, 3, 3]
max_end3([11, 5, 9]) → [11, 11, 11]
max_end3([2, 11, 3]) → [3, 3, 3]
💻 max_end3 - link to original question on CodingBat.com:
codingbat.com/prob/p135290
💻 Python String Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt8Qa-90WL9LKTp8_4fvk6eS
💻 Python List Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt9vwky84Lp-5pK4ckzKbnTo
📖 Please check out my Udemy course here:
udemy.com/course/the-python-built-in-function-tutorial-series
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CodingBat Python List-1 common_end answer.
Timestamps:
0:00-0:11 Intro
0:12-0:24 The Question
0:25-0:54 Analyze Question
0:55-1:12 How to Slice a List in Python
1:13-2:00 How to Get First Element
2:01-2:53 How to Get Last Element
2:54-4:22 First Solution
4:23-5:10 Second Solution
5:11-6:31 Optimizing the Solution
6:32 Final Solution
common_end question:
Given 2 arrays of ints, a and b, return True if they have the same first element or they have the same last element. Both arrays will be length 1 or more.
common_end([1, 2, 3], [7, 3]) → True
common_end([1, 2, 3], [7, 3, 2]) → False
common_end([1, 2, 3], [1, 3]) → True
💻 common_end - link to original question on CodingBat.com:
codingbat.com/prob/p147755
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CodingBat Python List-1 first_last6 answer.
Timestamps:
0:00-0:13 Intro
0:14-0:42 The Question
0:43-0:58 Analyze Question
0:59-1:21 How to Get First Element
1:22-1:40 How to Get Last Element
1:41-2:49 Another Way to Get Last Element
2:50-3:24 First Solution
3:25-4:03 Second Solution
4:04-4:34 Optimizing the Solution
4:35 Final Solution
first_last6 question:
Given an array of ints, return True if 6 appears as either the first or last element in the array. The array will be length 1 or more.
first_last6([1, 2, 6]) → True
first_last6([6, 1, 2, 3]) → True
first_last6([13, 6, 1, 2, 3]) → False
💻 first_last6 - link to original question on CodingBat.com:
codingbat.com/prob/p181624
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CodingBat Python Logic-1 caught_speeding answer.
Timestamps:
0:00-0:13 Intro
0:14-0:48 The Question
0:49-1:53 Analyze Question
1:54-3:00 1st If Statement
3:01-3:20 2nd If Statement
3:21-3:51 3rd If Statement
3:52-4:10 Return Statement
4:11-4:56 1st Solution
4:57-7:42 Optimizing the Solution
7:43 Final Solution
caught_speeding question:
You are driving a little too fast, and a police officer stops you. Write code to compute the result, encoded as an int value: 0=no ticket, 1=small ticket, 2=big ticket. If speed is 60 or less, the result is 0. If speed is between 61 and 80 inclusive, the result is 1. If speed is 81 or more, the result is 2. Unless it is your birthday -- on that day, your speed can be 5 higher in all cases.
caught_speeding(60, False) → 0
caught_speeding(65, False) → 1
caught_speeding(65, True) → 0
💻 caught_speeding - link to original question on CodingBat.com:
codingbat.com/prob/p137202
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CodingBat Python Logic-1 love6 answer.
Timestamps:
0:00-0:13 Intro
0:14-0:42 The Question
0:43-1:04 Analyze Question
1:05-1:35 1st If Statement
1:36-2:08 2nd If Statement
2:09-2:44 3rd If Statement
2:45-3:08 1st Solution
3:09-3:27 Running The Code
3:28-5:13 The abs() built-in function
5:14-6:00 Optimizing the Solution
6:01 Final Solution
love6 question:
The number 6 is a truly great number. Given two int values, a and b, return True if either one is 6. Or if their sum or difference is 6. Note: the function abs(num) computes the absolute value of a number.
love6(6, 4) → True
love6(4, 5) → False
love6(1, 5) → True
💻 love6 - link to original question on CodingBat.com:
codingbat.com/prob/p100958
💻 Python String Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt8Qa-90WL9LKTp8_4fvk6eS
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CodingBat Python Logic-1 in1to10 answer.
Timestamps:
0:00-0:15 Intro
0:16-0:33 The Question
0:34-1:13 Analyze Question
1:14-2:03 1st If Statement
2:04-2:52 2nd Statement
2:53-3:18 1st Solution
3:19-4:04 2nd Solution
4:05-5:17 Solution with Range() Function
5:18-6:00 3rd Solution
6:01 Outro
in1to10 question:
Given a number n, return True if n is in the range 1..10, inclusive. Unless outside_mode is True, in which case return True if the number is less or equal to 1, or greater or equal to 10.
in1to10(5, False) → True
in1to10(11, False) → False
in1to10(11, True) → True
💻 in1to10 - link to original question on CodingBat.com:
codingbat.com/prob/p158497
💻 Python String Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt8Qa-90WL9LKTp8_4fvk6eS
💻 Python List Methods Course Playlist:
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CodingBat Python Logic-1 sorta_sum answer.
Timestamps:
0:00-0:29 The Question
0:30-0:53 Analyze Question
0:54-1:53 1st If Statement
1:54-2:17 2nd Statement
2:18-2:33 1st Solution
2:34-3:00 Refactor 1st If Statement
3:01-4:11 Solution with Range() Function
4:12-4:49 2nd Refactor
4:50 Final solution
sorta_sum question:
Given 2 ints, a and b, return their sum. However, sums in the range 10..19 inclusive, are forbidden, so in that case just return 20.
sorta_sum(3, 4) → 7
sorta_sum(9, 4) → 20
sorta_sum(10, 11) → 21
💻 sorta_sum - link to original question on CodingBat.com:
codingbat.com/prob/p116620
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youtube.com/playlist?list=PL4eU-_ytIUt8Qa-90WL9LKTp8_4fvk6eS
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CodingBat Python Logic-1 cigar party answer.
Timestamps:
0:00-1:09 The Question
1:10-1:44 The Function
1:45-2:23 1st If Statement
2:24-3:15 2nd If Statement
3:16-4:25 Run the code
4:26-5:56 Refactor 1st If Statement
5:57-7:00 Refactor Second If Statement
7:01-7:38 Final code improvements
7:39 Final solution
cigar_party question:
When squirrels get together for a party, they like to have cigars. A squirrel party is successful when the number of cigars is between 40 and 60, inclusive. Unless it is the weekend, in which case there is no upper bound on the number of cigars. Return True if the party with the given values is successful, or False otherwise.
cigar_party(30, False) → False
cigar_party(50, False) → True
cigar_party(70, True) → True
💻 cigar_party - link to original answer on CodingBat.com:
codingbat.com/prob/p195669
💻 Python String Methods Course Playlist:
youtube.com/playlist?list=PL4eU-_ytIUt8Qa-90WL9LKTp8_4fvk6eS
💻 Python List Methods Course Playlist:
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After this video you will know how to use the .capitalize() string method and how capitalize the first letter of a string.
Timestamps:
0:00 Intro to capitalize()
0:43 Documentation
1:49 Basics
2:41 Gotchas
3:37 Arguments
4:06 Assignment
🐍 Python Docs:
docs.python.org/3/library/stdtypes.html#str.capitalize
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