Beginner Python tip:
Stop using Excel for everything! (1/3)
Pandas in 3 lines:
import pandas as pd
df =
df.groupby('Region').sum()
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#Python's len() is just a counter and a for loop. Rebuild the len function from scratch in 5 lines and see how Python counts items in a list or a string. Follow @pylernen for the next coding lesson.
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