Commit to ad remaining required files

preprocessor.py

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+import pandas as pd
+
+
+def preprocess(df, region_df):
+    # Filtering for summer olympics
+    df = df[df["Season"] == "Summer"]
+    # Merge with region_df
+    df = df.merge(region_df, on="NOC", how="left")
+    # dropping duplicates
+    df.drop_duplicates(inplace=True)
+    # one hot encoding medals
+    df = pd.concat([df, pd.get_dummies(df["Medal"], dtype="int")], axis=1)
+    return df