Hi! Imagine that we have to analyse a big amount of users data. At this article there will be a data in CSV format. For example, we can have a data in next format:
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1 |
(0118) 008 0694 | 180504 | Hattersheim am Main | 6 |
First column is user’s phone number, second column is date in YYMMDD format, third is a city, and the last …