This will result in a syntax error if copy/pasted into your code editor. Make sure to remove the new line after the "="
SyntaxError: invalid syntax (<ipython-input-65-480e5b366298>, line 3)
File "<ipython-input-65-480e5b366298>", line 3
data_radar_filtered[i + '_Rank'] =
^
SyntaxError: invalid syntax
Corrected:
for i in categories:
data_radar_filtered[i + '_Rank'] = data_radar_filtered[i].rank(pct=True)# We need to flip the rank for interceptions
data_radar_filtered['Int_Rank'] = 1 - data_radar_filtered['Int_Rank']