Solution for 511.

solution/0500-0599/0511.Game Play Analysis I/README.md

@@ -69,4 +69,19 @@ FROM Activity
 GROUP BY 1;
 ```
 
+### **pandas**
+
+```python
+import pandas as pd
+
+
+def game_analysis(activity: pd.DataFrame) -> pd.DataFrame:
+    return (
+        activity.groupby("player_id")
+        .agg(first_login=("event_date", "min"))
+        .reset_index()
+    )
+
+```
+
 <!-- tabs:end -->

solution/0500-0599/0511.Game Play Analysis I/README_EN.md

@@ -70,4 +70,19 @@ FROM Activity
 GROUP BY 1;
 ```
 
+### **pandas**
+
+```python
+import pandas as pd
+
+
+def game_analysis(activity: pd.DataFrame) -> pd.DataFrame:
+    return (
+        activity.groupby("player_id")
+        .agg(first_login=("event_date", "min"))
+        .reset_index()
+    )
+
+```
+
 <!-- tabs:end -->

solution/0500-0599/0511.Game Play Analysis I/Solution.py

@@ -0,0 +1,9 @@
+import pandas as pd
+
+
+def game_analysis(activity: pd.DataFrame) -> pd.DataFrame:
+    return (
+        activity.groupby("player_id")
+        .agg(first_login=("event_date", "min"))
+        .reset_index()
+    )