add code to get its true rank

get_real_rank.py

@@ -0,0 +1,27 @@
+# code to get its "true" rank on the agent course challenge
+# - remove all the users that used the code space of someone else (won't work for the forks)
+# - set the same rank for all the people with same score
+
+import pandas as pd
+from datasets import load_dataset
+
+username = 'guillaumefrd'
+
+dataset = load_dataset('agents-course/unit4-students-scores')
+df = pd.DataFrame(dataset['train'])
+df.sort_values('score', ascending=False, inplace=True)
+
+# keep only users that submitted from their own code space or than ran locally (with None in code space)
+df['to_keep'] = df.apply(lambda row: row['username'] in row['code'] or 'None' in row['code'], axis=1)
+df = df[df['to_keep'] == True]
+
+# compute rank (all users with same score have the same rank)
+ranks_to_add = 0
+for i, score in enumerate(df['score'].unique()):
+    df.loc[df['score'] == score, 'rank'] = ranks_to_add + i + 1
+    ranks_to_add += len(df[df['score'] == score]) - 1
+
+# find `username` rank
+rank = int(df[df['username'] == username]['rank'].values[0])
+total = len(df['code'].unique())
+print(f"{username} rank: {rank}/{total} (top {rank/total*100:.1f}%)")