How it works Skills Methodology Pricing Sign In / Up

← All patterns

Pattern

DataFrame selection

4 problemsin this pattern, climbing easy → medium → hard. Pick wherever you're calibrated.

EZ

Easy

0 / 2 solved

Filter a DataFrame on two conditions
Python · ~8 min
NEW
Filter rows by a set of values
Python · ~7 min
NEW

MD

Medium

0 / 2 solved

Top-k orders by amount
Python · ~8 min
NEW
Keep rows whose group meets a threshold
Python · ~11 min
NEW