exercice done

module2/exo4/step_by_day.csv

+date,nb_step
+2025-02-12,5361
+2025-02-11,7480
+2025-02-10,8605
+2025-02-09,1228
+2025-02-08,7924
+2025-02-07,4241
+2025-02-06,12601
+2025-02-05,6544
+2025-02-04,5907
+2025-02-03,4808
+2025-02-02,1104
+2025-02-01,4847
+2025-01-31,14556
+2025-01-30,8895
+2025-01-29,9392
+2025-01-28,14227
+2025-01-27,11821
+2025-01-26,1292
+2025-01-25,5301
+2025-01-24,16202
+2025-01-23,8728
+2025-01-22,5188
+2025-01-21,5154
+2025-01-20,5424
+2025-01-19,1956
+2025-01-18,286
+2025-01-17,10862
+2025-01-16,7689
+2025-01-15,5505
+2025-01-14,7176
+2025-01-13,8193
+2025-01-12,1093
+2025-01-11,9369
+2025-01-10,13196
+2025-01-09,7561
+2025-01-08,5606
+2025-01-07,8123
+2025-01-06,7839
+2025-01-05,5963
+2025-01-04,1006
+2025-01-03,9906
+2025-01-02,14
\ No newline at end of file