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Semalt explique les compétences dont vous avez besoin pour maîtriser Web Scraping

Dec 08, 2017

Si vous recherchez des données pour alimenter votre activité en ligne, vous pouvez ne pas être possible pour vous de collecter des données simplement en cherchant sur Google. Parfois, nous devons utiliser un certain nombre de robots d'exploration et de grattoirs de données pour réaliser nos projets, et parfois nous devons développer des compétences de base. Il est vrai que les moteurs de recherche peuvent vous aider à trouver ce que vous cherchez, mais vous devez développer les compétences suivantes pour réussir.

1. Possibilité de lire le fichier robots.txt

Vous devriez être capable de lire et éditer les fichiers robots.txt correctement. Ce fichier est utilisé pour limiter les crawlers de frapper votre site trop fréquemment. Dans le même temps, il vous aide à maintenir la qualité de vos données grattées et améliore la vitesse de votre site pour les visiteurs humains. C'est pourquoi vous devez apprendre à modifier le fichier robots.txt. Lorsque vous avez édité ce fichier correctement, vous serez en mesure de se débarrasser des mauvais robots qui ne respectent pas les règles et les règlements des moteurs de recherche. De plus, vous pouvez cibler différentes pages Web en même temps et vous pouvez facilement rayer ou extraire les données désirées.

2. Mettre en place l'infrastructure de données

Il est très Il est important de configurer l'infrastructure de données car elle débloquera des données de qualité sur l'ensemble du site Web, par exemple, vous apprendrez le langage SQL, PHP et d'autres langages similaires, car ils contribueront à améliorer l'infrastructure de vos données. La mise en place de l'infrastructure de données vous permettra de devenir un analyste en libre-service, ce qui vous permettra d'obtenir des données plus exactes et plus précises en quelques minutes.

3. Idées de base HTML, CSS et JavaScript

Il est important d'apprendre le HTML, JavaScript et CSS si vous voulez gratter tout le site sans compromettre la qualité Si vous vous demandez comment les programmeurs travaillent et n'ont rien fait pour rayer votre contenu web, il est temps d'apprendre langages de programmation et de développer quelques compétences.Pour quelqu'un qui n'avait jamais codé auparavant, les concepts de HTML, JavaScript et CSS seront b e relativement nouveau. Vous devrez peut-être recopier des données encore et encore jusqu'à ce que les résultats de qualité ne soient pas obtenus. C'est un processus compliqué, mais une fois que vous en aurez pris connaissance, vous pourrez gratter autant de pages web que vous le souhaitez sans avoir besoin d'un outil de grattage des données . HTML et CSS ne sont pas des langages de programmation techniques, ils sont donc faciles à apprendre et vous pouvez les maîtriser en quelques jours.

4. Capacité d'écrire et de mettre à l'échelle les robots

Vous devriez être capable de différencier les bons robots et les mauvais robots. Les bons robots aident à explorer votre site Web dans les résultats des moteurs de recherche, vous donnant des données bien structurées et de haute qualité. D'un autre côté, les bad bots sont nuisibles à votre site et ne vous obtiendront jamais des données bien éraflées. Vous avez non seulement besoin de différencier les bons robots et les mauvais robots, mais vous devez aussi écrire et mettre à l'échelle les robots. Vous devez garder à l'esprit que les bots sont la prochaine étape dans l'évolution de l'interaction informatique et humaine. Cela signifie que plus vous en savez sur les bots et les écrivez régulièrement, plus vos chances de récolter des données de qualité et de profiter de votre activité seront élevées.

Alexandra

Web scraping is such a valuable skill in today's data-driven world. It allows us to gather and analyze information from different sources easily. Excited to learn more about it!

Michael

I completely agree, Alexandra. Web scraping has revolutionized the way we extract data and gain insights. It's a must-have skill for anyone working with data.

Emily

I've been meaning to start learning web scraping but never got around to it. Any recommendations on where to start?

Nik Chaykovskiy

Emily, I suggest you start with Python and libraries like BeautifulSoup or Scrapy. They provide powerful tools for web scraping and have extensive documentation and resources to help you get started. Good luck!

Jason

Web scraping can be a legal gray area sometimes. What are the ethical considerations one should keep in mind while using web scraping?

Nik Chaykovskiy

Jason, you raise a valid point. When web scraping, it's important to respect website terms of service, not overload servers with requests, and only scrape publicly accessible information. It's crucial to use web scraping responsibly and ethically.

Sarah

I've heard that web scraping can be challenging when websites have anti-scraping measures in place. Any tips on how to overcome such obstacles?

Nik Chaykovskiy

Sarah, some websites employ techniques to prevent scraping like CAPTCHAs or IP blocking. To overcome these challenges, you can use rotating proxies, CAPTCHA solvers, or implement delay mechanisms. Each case is unique, and it requires creativity and adaptability to overcome website-specific obstacles.

David

The potential applications of web scraping are vast, from market research to price comparison. It's a skill that opens up numerous opportunities.

Olivia

I recently started web scraping for my project, and it has made data collection so much faster and convenient. Couldn't imagine working without it now.

Nathan

Are there any legal restrictions or regulations around web scraping? I'd like to ensure I'm not violating any laws.

Nik Chaykovskiy

Nathan, legal restrictions regarding web scraping can vary by jurisdiction and website terms of service. It's essential to familiarize yourself with applicable laws and respect website rules. Scraping personal or sensitive data without consent is generally prohibited. Always ensure you're scraping within legal bounds.

Karen

Web scraping sounds interesting, but is it worth the effort to learn? Can it significantly benefit my work?

Nik Chaykovskiy

Karen, web scraping can greatly benefit your work if you frequently deal with data collection, analysis, market trends, or competitor research. It saves time, provides valuable insights, and helps make data-driven decisions. It's definitely worth the effort if it aligns with your needs.

Emma

I've used web scraping for social media sentiment analysis, and it has been incredibly helpful in understanding customer sentiments and improving our brand's strategy.

Sophia

I've been considering a career in data science. Would having web scraping skills give me a competitive edge in the job market?

Nik Chaykovskiy

Sophia, data science is a rapidly growing field, and web scraping is a valuable skillset within it. It showcases your ability to extract and analyze data from various sources, which can indeed give you a competitive edge in the job market. Employers often value candidates with diverse data acquisition techniques.

Ethan

I've been using web scraping for lead generation and building targeted email lists. It has significantly improved my marketing campaigns.

Grace

What are some common challenges faced while web scraping, and how can one overcome them?

Nik Chaykovskiy

Grace, common challenges include website structure changes, dynamic content, or handling large datasets. To overcome them, you can monitor and adapt to website changes, use advanced scraping techniques for dynamic content, and employ efficient data processing methods for large datasets. Staying updated and leveraging available tools can help tackle these challenges effectively.

Claire

Do you have any recommended resources or online courses to learn web scraping?

Nik Chaykovskiy

Claire, there are several great resources to learn web scraping. Semalt offers in-depth articles and tutorials on web scraping, and you can also explore online platforms like Coursera, Udemy, or DataCamp for comprehensive courses. Choose resources that align with your learning style and get ready for an exciting journey into web scraping!

Mark

I'm concerned about the ethical implications of scraping personal information. How can we ensure data privacy while using web scraping?

Nik Chaykovskiy

Mark, when scraping personal information, it's crucial to ensure compliance with applicable privacy laws like GDPR. Anonymize any collected data, obtain necessary consents, and use the obtained data responsibly. Privacy and data protection should be a top priority when working with personal information.

Liam

I've been thinking about starting a side project involving web scraping. What are the potential risks and legal considerations I should keep in mind?

Nik Chaykovskiy

Liam, when starting a web scraping side project, ensure you're aware of copyright laws, terms of service of websites you scrape, and don't violate any intellectual property rights. Additionally, consider potential impacts on server load and respect any API usage limits. Being mindful of these considerations will help you mitigate risks and ensure compliance.

Ava

I'm a beginner in programming. Is web scraping suitable for someone with limited coding experience?

Nik Chaykovskiy

Ava, while web scraping does require coding knowledge, it's not necessarily restricted to experienced programmers. There are beginner-friendly libraries and resources available, and it can be a great learning opportunity. Start with basic programming concepts and gradually explore web scraping. Don't hesitate to ask for help or guidance when facing challenges.

Lucas

Web scraping can be a powerful tool for competitive intelligence. It provides valuable insights into competitors' products, pricing, and strategies.

Isabella

As an SEO specialist, web scraping has been instrumental in analyzing competitors' backlinks and identifying new opportunities for link building.

Julian

Does web scraping work equally well with all websites, or are there specific types of websites that are more challenging to scrape?

Nik Chaykovskiy

Julian, web scraping can work with most websites, but certain websites may have measures in place to make scraping more challenging. Websites with dynamic content, complex structures, or anti-scraping techniques can require additional effort and expertise. However, with the right approach and techniques, valuable data can still be extracted from such websites.

Mia

I've heard about web scraping leading to IP blocking or legal consequences. How can one prevent such issues while scraping?

Nik Chaykovskiy

Mia, to avoid IP blocking, you can use rotating proxies, spread out requests, or limit the scraping rate. Monitoring website activity and being responsive to any warnings or restrictions from the website can also help prevent legal consequences. It's important to stay within the website's allowed usage limits and respect their rules.

Elijah

Web scraping can be a game-changer for quantitative research. It provides access to vast amounts of data that can be analyzed to gain insights.

Victoria

I've found web scraping to be especially useful for sentiment analysis of customer reviews. It helps identify trends and areas of improvement for our products.

Thomas

How time-consuming is web scraping? Does it require constant maintenance or monitoring of scraped data?

Nik Chaykovskiy

Thomas, the time required for web scraping depends on various factors like website complexity, data volume, and scraping frequency. Initially, you may need to invest time in setting up the scraping process, but with proper automation and error handling, it can become less time-consuming. Monitoring scraped data periodically is important to ensure accuracy and address any changes.

Aiden

Web scraping is an exciting field, but are there any legal gray areas we should be aware of?

Nik Chaykovskiy

Aiden, web scraping legality varies in different jurisdictions and depends on factors like website terms of service and data usage. Scraping personal or copyrighted data without proper consent can pose legal risks. Staying informed about relevant laws and following ethical scraping practices will help navigate potential legal gray areas.

Charlotte

Can web scraping be used for academic research purposes? Are there any limitations or considerations for using scraped data in academic studies?

Nik Chaykovskiy

Charlotte, web scraping can indeed be used for academic research purposes, but there are limitations and considerations. Ensure compliance with data usage and privacy regulations, respect websites' terms, and properly cite the data obtained. Additionally, consider data biases, potential limitations, and ethical implications when using scraped data for academic studies.

Sophie

I'm interested in learning web scraping for market research. What are some key tips for effectively scraping competitor websites?

Nik Chaykovskiy

Sophie, when scraping competitor websites for market research, define your objectives clearly and identify the specific data points you need. Explore different scraping techniques like extracting product details, pricing, or customer reviews. Ensure you respect their terms of service and scraping rate limits. Properly organize and analyze the collected data to gain valuable insights for your market research.

Daniel

What are some of the popular applications of web scraping in the business world?

Nik Chaykovskiy

Daniel, web scraping finds applications in various business areas like competitive analysis, market research, lead generation, sentiment analysis, pricing intelligence, and brand monitoring. It helps businesses gain insights, identify trends, benchmark against competitors, and make data-driven decisions. The possibilities are vast and highly beneficial for businesses in different industries.

Christopher

How does web scraping cope with websites that require authentication or user accounts?

Nik Chaykovskiy

Christopher, web scraping websites that require authentication or user accounts can be more challenging. You can simulate user sessions, handle cookies, or utilize APIs if available. However, it's crucial to respect website policies, terms, and not compromise user data or security measures. Depending on the website's restrictions, scraping authenticated content may require additional considerations or alternative approaches.

James

What are the risks of web scraping in terms of potential legal actions or violations?

Nik Chaykovskiy

James, when web scraping, there are legal risks if you violate website terms or applicable laws. Potential consequences can include receiving cease and desist letters, facing legal actions, or damaging your reputation. It's essential to conduct web scraping within legal bounds and respect website rules to mitigate these risks and ensure responsible data acquisition.

Emily

Thanks for the recommendation, Nik Chaykovskiy! I'll definitely start with Python and explore BeautifulSoup and Scrapy to learn web scraping. Excited to get started!

Nik Chaykovskiy

You're welcome, Emily! Python and the mentioned libraries are excellent starting points. Feel free to reach out if you have any questions or need further guidance during your web scraping journey. Happy learning!

Jason

Thank you for addressing the ethical considerations, Nik Chaykovskiy. It's crucial to use web scraping responsibly and respect website boundaries. Appreciate the insights!

Nik Chaykovskiy

Absolutely, Jason! Responsible web scraping is essential to maintain a positive digital ecosystem. If everyone adheres to ethical practices, it ensures a fair playing field and protects the interests of website owners and users alike. Thank you for highlighting the importance of ethical considerations!

Sarah

Thank you for the tips on overcoming web scraping challenges, Nik Chaykovskiy. I'll keep them in mind next time I face any obstacles. Much appreciated!

Nik Chaykovskiy

You're welcome, Sarah! Overcoming challenges is part of the web scraping journey. Remember to stay adaptable and explore different techniques and tools when faced with obstacles. Don't hesitate to ask for help or advice if needed. Best of luck with your future web scraping endeavors!

Karen

Thank you, Nik Chaykovskiy, for clarifying the potential benefits of web scraping. It seems like a skill worth investing time and effort in. I appreciate your insights!

Nik Chaykovskiy

You're welcome, Karen! Web scraping can indeed bring numerous benefits in various domains. Whether it's for research, analysis, or decision-making, the ability to extract and utilize data effectively opens up new opportunities. Feel free to explore resources and tools to further enhance your web scraping skills. Happy scraping!

Nathan

Thank you, Nik Chaykovskiy, for highlighting the importance of legal considerations in web scraping. Ensuring compliance with regulations is crucial to avoid any legal repercussions. I appreciate the guidance!

Nik Chaykovskiy

You're welcome, Nathan! Legal considerations are necessary when engaging in web scraping activities. Staying informed and respecting data privacy, intellectual property rights, and website terms of service are essential to avoid legal issues. If you have any specific questions about legal aspects, feel free to ask. Happy scraping!

Emma

Web scraping for social media sentiment analysis sounds fascinating, Nik Chaykovskiy. It's amazing how data extraction contributes to understanding customer sentiments. Thank you for sharing!

Nik Chaykovskiy

You're welcome, Emma! Social media sentiment analysis can provide valuable insights for understanding customer perceptions and improving brand strategies. Web scraping enables data-driven insights that enhance decision-making in various areas. If you have any other questions or need further information, feel free to ask. Enjoy your web scraping endeavors!

Sophia

Thank you, Nik Chaykovskiy, for confirming that web scraping can give me an advantage in the data science job market. I'll definitely focus on acquiring web scraping skills to enhance my career prospects!

Nik Chaykovskiy

You're welcome, Sophia! Data science is a competitive field, and having web scraping skills can enhance your versatility as a candidate. It showcases your ability to gather and utilize data effectively, which is highly valued in data-driven roles. Don't hesitate to practice and explore real-world applications of web scraping to bolster your portfolio. Best of luck in your data science journey!

Ethan

Web scraping for lead generation has indeed revolutionized the marketing landscape. It's a powerful tool for building targeted marketing campaigns. Thanks for sharing, Nik Chaykovskiy!

Nik Chaykovskiy

You're welcome, Ethan! Web scraping has greatly accelerated lead generation processes and provided marketers with valuable data for targeting and personalization. By utilizing web scraping effectively, marketers can gain a competitive edge in reaching out to their target audience. If you have any further questions or need additional insights, feel free to ask. Happy marketing!

Grace

Thank you, Nik Chaykovskiy, for shedding light on the challenges of web scraping and ways to overcome them. It's important to be prepared for potential obstacles. I appreciate your guidance!

Nik Chaykovskiy

You're welcome, Grace! Web scraping can indeed present challenges, but with the right techniques and approaches, those obstacles can be overcome. Remember to stay updated with new developments, leverage available tools, and adapt to website-specific hurdles. If you encounter any difficulties or have specific questions, feel free to ask for assistance. Happy scraping!

Claire

Thank you for the recommendations, Nik Chaykovskiy. I'll explore Semalt's articles and check out online platforms like Coursera for web scraping courses. Excited to delve into this new skill set!

Nik Chaykovskiy

You're welcome, Claire! Semalt's articles and courses on platforms like Coursera can provide valuable insights and comprehensive learning resources for web scraping. Dive deep, practice, and experiment with different techniques and tools. If you have any questions while learning, don't hesitate to reach out for guidance. Best of luck on your web scraping journey!

Mark

Thank you, Nik Chaykovskiy, for emphasizing the importance of data privacy in web scraping. Respecting privacy laws and using anonymized data is crucial for responsible data acquisition. I appreciate your insights!

Nik Chaykovskiy

You're welcome, Mark! Data privacy is a paramount concern when working with scraped data, and it's crucial to ensure compliance with privacy laws and protect individuals' information. Anonymization, informed consent, and responsible data usage are key principles to follow. If you have any further questions or need additional guidance, feel free to ask. Happy scraping!

Liam

Thank you for the guidance, Nik Chaykovskiy. I'll keep copyright laws, IP rights, and API usage limits in mind when starting my web scraping side project. Appreciate your insights!

Nik Chaykovskiy

You're welcome, Liam! Copyright, IP rights, and respecting API usage limits are essential considerations when starting a web scraping side project. Taking proactive measures and understanding potential risks will help ensure a smooth and compliant scraping journey. If you have any specific questions or need further advice, feel free to ask. Happy scraping!

Ava

Thank you, Nik Chaykovskiy. I'll keep your advice in mind as I start my web scraping journey. Excited to explore the possibilities this skill offers!

Nik Chaykovskiy

You're welcome, Ava! Embrace the web scraping journey with an open mind and eagerness to learn. If you encounter any challenges along the way or need guidance, don't hesitate to seek assistance. The more you explore and practice, the more you'll discover the potential of web scraping. Best of luck and enjoy the process!

Lucas

Competitive intelligence through web scraping is a game-changer, indeed. It unravels valuable insights for better decision-making and business strategies. Thanks for sharing, Nik Chaykovskiy!

Nik Chaykovskiy

You're welcome, Lucas! Competitive intelligence can be a pivotal factor in gaining a competitive edge. Leveraging web scraping to extract data and derive insights about competitors helps businesses make informed decisions and optimize strategies. If you have any further inquiries or need additional advice regarding competitive intelligence, feel free to ask. Happy scraping!

Isabella

Web scraping for analyzing competitors' backlinks is a powerful technique for SEO specialists. It helps identify link building opportunities, contributing to overall website performance. Thank you for highlighting this, Nik Chaykovskiy!

Nik Chaykovskiy

You're welcome, Isabella! Backlink analysis through web scraping is indeed a valuable asset for SEO specialists. It provides insights into competitor link profiles, facilitates identifying potential link building opportunities, and contributes to improving overall website authority. Feel free to reach out if you have any more questions or need additional advice regarding SEO and web scraping. Happy scraping!

Julian

Thank you, Nik Chaykovskiy, for clarifying the web scraping compatibility with different websites. Understanding the potential challenges and applying the right techniques for each situation is crucial. Appreciate your insights!

Nik Chaykovskiy

You're welcome, Julian! Web scraping compatibility can vary depending on the complexity and anti-scraping measures of each website. Being prepared for challenges and employing suitable techniques will help overcome obstacles and extract valuable data. If you encounter any specific difficulties or have further inquiries, feel free to ask for assistance. Happy scraping!

Mia

Thank you, Nik Chaykovskiy, for sharing tips on preventing IP blocking and legal consequences during web scraping. Protecting our scraping activities and respecting website rules are indeed essential. I appreciate your guidance!

Nik Chaykovskiy

You're welcome, Mia! Avoiding IP blocking and potential legal consequences is crucial for maintaining uninterrupted web scraping activities. Implementing preventive measures, being aware of website policies, and staying within allowed usage limits will go a long way in ensuring a smooth and responsible web scraping journey. If you have any further questions or need additional advice, feel free to reach out. Happy scraping!

Elijah

Web scraping indeed empowers quantitative research with vast amounts of data. It opens up new opportunities for researchers. Thanks for sharing, Nik Chaykovskiy!

Nik Chaykovskiy

You're welcome, Elijah! Quantitative research can greatly benefit from web scraping by providing access to extensive datasets for analysis and insights. Researchers can explore new avenues, validate hypotheses, and extract valuable information with the power of web scraping. If you have any further questions or need additional insights regarding quantitative research and web scraping, feel free to ask. Happy researching!

Victoria

Web scraping for sentiment analysis of customer reviews is a great way to understand their preferences and improve our products accordingly. Thank you for sharing, Nik Chaykovskiy!

Nik Chaykovskiy

You're welcome, Victoria! Sentiment analysis of customer reviews through web scraping can unearth valuable insights for product improvement and customer satisfaction enhancement. By understanding sentiment trends and identifying areas of improvement, businesses can deliver enhanced products and services. If you have any more inquiries or need additional guidance regarding sentiment analysis or web scraping, feel free to ask. Happy scraping!

Thomas

Thank you, Nik Chaykovskiy, for shedding light on the time commitment and maintenance aspects of web scraping. Being prepared for continuous monitoring and ensuring data accuracy is crucial. I appreciate your insights!

Nik Chaykovskiy

You're welcome, Thomas! Web scraping can require initial time investment and periodic monitoring to ensure data accuracy and adapt to website changes. Utilizing automation, error handling mechanisms, and efficient maintenance practices can help streamline the scraping process. If you have any more questions or need additional advice regarding time management and maintenance in web scraping, feel free to ask. Happy scraping!

Aiden

Thank you, Nik Chaykovskiy, for addressing the legal gray areas of web scraping. Being aware of legal risks and practicing responsible scraping is essential. I appreciate your valuable insights!

Nik Chaykovskiy

You're welcome, Aiden! Web scraping can present legal challenges, and understanding potential gray areas is crucial. By adhering to relevant laws, respecting terms of service, and adopting ethical practices, we can mitigate legal risks and foster responsible web scraping practices. If you have any further inquiries or need additional guidance, feel free to ask. Happy and lawful scraping!

Charlotte

Thank you, Nik Chaykovskiy, for clarifying the limitations and considerations when using scraped data for academic research. It's important to ensure compliance and properly handle the data. I appreciate your insights!

Nik Chaykovskiy

You're welcome, Charlotte! Academic research can benefit from scraped data, but it's crucial to adhere to compliance regulations, handle data ethically, and acknowledge data sources properly. Account for potential limitations, biases, and ensure data integrity in the research process. If you have any more inquiries or need additional guidance regarding academic research and web scraping, feel free to ask. Happy researching!

Sophie

Thank you, Nik Chaykovskiy, for providing essential tips on effective web scraping for market research purposes. Defining objectives and choosing the right techniques are key for success. I appreciate your insights!

Nik Chaykovskiy

You're welcome, Sophie! Market research can greatly benefit from web scraping, and defining clear objectives and employing suitable techniques will lead to successful outcomes. By extracting relevant data points, organizing and analyzing them effectively, researchers can derive valuable insights for market analysis and decision-making. If you have any specific questions or need further advice on market research and web scraping, feel free to ask. Happy scraping!

Daniel

Thank you, Nik Chaykovskiy, for highlighting the diverse applications of web scraping in the business world. It's incredible how it caters to versatile requirements and contributes to sound decision-making. I appreciate your insights!

Nik Chaykovskiy

You're welcome, Daniel! Web scraping finds applications in various business domains, unlocking opportunities for competitive analysis, market research, lead generation, pricing intelligence, and more. By integrating scraped data into decision-making processes, businesses can gain a competitive edge and better understand their market landscape. If you have any further inquiries or need additional advice on business applications of web scraping, feel free to ask. Happy scraping!

Christopher

Thank you, Nik Chaykovskiy, for explaining the challenges and approaches for scraping authenticated websites. Understanding the complexities and adopting suitable techniques is crucial. I appreciate your insights!

Nik Chaykovskiy

You're welcome, Christopher! Scraping authenticated websites can pose challenges, but with the right approaches like simulating user sessions and handling cookies, scraping can still be achieved. Ensure adherence to website policies and prioritize data security and user privacy. If you have any specific questions or need further advice on scraping authenticated content, feel free to ask. Happy scraping!

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Semalt explique les compétences dont vous avez besoin pour maîtriser Web Scraping

1. Possibilité de lire le fichier robots.txt

2. Mettre en place l'infrastructure de données

3. Idées de base HTML, CSS et JavaScript

4. Capacité d'écrire et de mettre à l'échelle les robots

Semalt company

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Success Cases

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