回答編集履歴
4
Update
test
CHANGED
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@@ -16,12 +16,8 @@
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16
16
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17
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#
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18
18
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dfx = (
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19
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-
df.groupby('名前')
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19
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+
df.groupby('名前', sort=False)
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20
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-
.apply(lambda x:
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21
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-
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20
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+
.apply(lambda x: x.assign(価格=x['価格'].min())))
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22
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-
.cummin()
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23
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-
.sort_index().reset_index())
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-
.reset_index(drop=True))
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21
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print(dfx.to_markdown(index=False))
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27
23
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```
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3
Update
test
CHANGED
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@@ -20,16 +20,17 @@
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20
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.apply(lambda x:
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21
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x.set_index('日付').sort_values('価格')
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.cummin()
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-
.r
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+
.sort_index().reset_index())
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.reset_index(drop=True))
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-
print(dfx)
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+
print(dfx.to_markdown(index=False))
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27
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+
```
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-
#
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-
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+
| 日付 | 名前 | 価格 |
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|:------:|:-------|-------:|
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30
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-
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| 4/1 | A | 200 |
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-
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+
| 4/1 | A | 200 |
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-
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+
| 4/2 | B | 100 |
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-
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+
| 4/3 | B | 100 |
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-
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35
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+
| 4/3 | B | 100 |
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35
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-
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36
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+
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2
Update
test
CHANGED
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@@ -18,10 +18,10 @@
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18
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dfx = (
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19
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df.groupby('名前')
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.apply(lambda x:
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-
x.sort_values(
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21
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+
x.set_index('日付').sort_values('価格')
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22
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.cummin()
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-
.sort_values(
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23
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+
.reset_index().sort_values('日付'))
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24
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-
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.reset_index(drop=True))
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25
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print(dfx)
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27
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@@ -30,6 +30,6 @@
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30
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0 4/1 A 200
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31
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1 4/1 A 200
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32
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2 4/2 B 100
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33
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-
3 4/
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+
3 4/3 B 100
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34
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4 4/3 B 100
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35
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```
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1
Update
test
CHANGED
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@@ -17,7 +17,10 @@
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17
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#
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18
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dfx = (
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19
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df.groupby('名前')
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20
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+
.apply(lambda x:
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20
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-
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21
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+
x.sort_values(['価格'])
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22
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+
.cummin()
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23
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+
.sort_values(['日付']))
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.reset_index(drop=True))
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22
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print(dfx)
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@@ -26,7 +29,7 @@
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26
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日付 名前 価格
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0 4/1 A 200
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1 4/1 A 200
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-
2 4/
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+
2 4/2 B 100
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30
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3 4/2 B 100
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31
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-
4 4/
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34
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+
4 4/3 B 100
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32
35
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```
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