EXL Data Engineer Interview Round 1 | Python Coding Questions | Real Interview Preparation

🚀 EXL Interview Round 1 | Python Coding Questions & Solutions | Data Engineer Interview 2026 In this video, I have covered practical *Python coding questions* that are useful for *EXL Data Engineer Interview – Round 1* preparation. These questions focus on problem-solving, Python fundamentals, practical coding, and interview-oriented programming concepts. 📌 *Questions Covered in This Video:* 1️⃣ *Extract First 3 Unique Characters from a String* • Remove duplicate characters • Keep the first occurrence • Extract the first 3 unique characters • Handle fewer than 3 unique characters using `_` 2️⃣ *Rank vs Dense Rank in Python* • Calculate Rank • Calculate Dense Rank • Handle duplicate employee scores • Understand the difference between Rank and Dense Rank 3️⃣ *Extract Even Numbers from a List* • Using a normal `for` loop • Using `filter()` and `lambda` 4️⃣ *Python Decorator – timeit* • Create a custom decorator • Measure function execution time • Handle `*args` and `**kwargs` • Use `functools.wraps` 🎯 *Who Should Watch?* ✔ EXL Data Engineer Interview Candidates ✔ Python Developer Interview Preparation ✔ Data Engineer Freshers & Experienced Professionals ✔ Python Interview Preparation ✔ Candidates preparing for Technical Round 1 ✔ Candidates looking for practical Python coding questions 💡 *Interview Tip:* Don't just memorize the code. During the interview, explain your: *Problem Understanding → Approach → Code → Dry Run → Time & Space Complexity → Edge Cases* 👍 If this video helps you in your interview preparation, please *Like, Share & Subscribe* to the channel. 🔔 Turn on the notification bell for more **Python, SQL, Databricks and Data Engineering interview questions**. Thanks for watching! ❤️ #EXLInterview #EXLInterviewQuestions #EXLDataEngineer #EXLInterview2026 #DataEngineerInterview #PythonInterview #PythonCoding #PythonInterviewQuestions #SQLInterview #DataEngineering #CodingInterview #TechnicalInterview #InterviewPreparation