回答編集履歴
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コード追加
test
CHANGED
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@@ -43,3 +43,73 @@
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df
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```
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user_id別ver.
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```python3
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import pandas as pd
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import copy
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dfa = pd.DataFrame({
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'action_id':['1', '2', '3', '4', '5', '6', '7', '8'],
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'user_id':['a', 'a', 'a', 'a', 'a', 'a', 'a', 'a'],
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'date':['2020-06-05', '2020-06-06', '2020-06-08', '2020-06-10', '2020-06-11', '2020-06-12', '2020-06-15', '2020-06-20'],
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'actoin_type':['get', 'purchase', 'purchase', 'purchase', 'get', 'purchase', 'get', 'purchase'],
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'point_get':['500', '0', '0', '0', '300', '0', '200', '0'],
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'point_use':['0', '300', '0', '500','0', '250', '0', '150']
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})
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dfb = pd.DataFrame({
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'action_id':['1', '2', '3', '4', '5', '6', '7', '8'],
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'user_id':['b', 'b', 'b', 'b', 'b', 'b', 'b', 'b'],
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'date':['2020-06-05', '2020-06-06', '2020-06-08', '2020-06-10', '2020-06-11', '2020-06-12', '2020-06-15', '2020-06-20'],
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'actoin_type':['get', 'purchase', 'purchase', 'purchase', 'get', 'purchase', 'get', 'purchase'],
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'point_get':['300', '0', '100', '0', '300', '0', '200', '0'],
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'point_use':['0', '300', '0', '500','0', '250', '0', '150']
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})
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df=pd.concat([dfa,dfb])
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df = df.reset_index(drop=True)
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blc = []
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for user_id, group in df.groupby("user_id"):
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record = 0
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for gt,us in zip(group["point_get"],group["point_use"]):
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record += int(gt) -int(us)
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if record < 0:
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record = 0
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blc.append(record)
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df["balance"] = pd.DataFrame(blc)
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df
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```
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