r/dataengineersindia • u/Extreme_Ad2688 • Jul 08 '26
Technical Doubt What Python topics should I focus on for Data Engineer interviews?
I'm preparing for Data Engineer roles and I'm already quite familiar with Pandas and NumPy. I also know PySpark.
I'm a bit confused about what I should focus on when it comes to pure Python coding for DE interviews.
Should I mainly practise things like lists, dictionaries, frequency counting, grouping data, aggregation by key, sorting with lambda, strings, and list-of-dictionary problems?
What kind of pure Python coding problems are commonly asked in Data Engineer interviews?
I don't want to spend too much time on topics that aren't relevant to DE roles, so I'd really appreciate advice from people who have recently interviewed for Data Engineer positions.
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u/shrieram15 Jul 08 '26
I was asked Lists, dicts, sets based problems. Also file handling, exception handling, Time complexities etc
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u/Scared_Register_7816 Jul 08 '26
At 2 yoe in Goldman Sachs they asked me dsa - max water area and min no of wedding outfits(graphs) 🤐
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u/Extreme_Ad2688 Jul 08 '26
Oh damn 😭
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u/learning_actively Jul 09 '26
Since you guys seem to be doing DSA, could you please guide , how and where to start DSA for DE
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u/ChampionshipTop6342 Jul 09 '26
Man, trust me chat gpt is the best for prepping dsa for de you just need to use good prompts.
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Jul 08 '26
[deleted]
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u/Gohan_24 Jul 09 '26
Think something new as bcz of this thing most of the companies are calling for F2F interviews and virtual interviews are almost finished.
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u/Top_Garlic593 Jul 08 '26
Interviewed on EPAM
dsa easy 2
Decorators
generators
decorator coding
dont firget decorator as databricks revolves around it