请问id相同的行超过50行,如果缩减为25行?
请问id相同的行超过50行,如果缩减为25行?python想用 if item["New_ID"] %2==0 的方式取奇数或者偶数,请问应该怎么写呀
newDf1 = pd.DataFrame(columns=['Time', 'eleCur', 'id'])for key, item in df1.groupby(['id']):
if item.shape[0] > 20 :
if item["New_ID"] %2==0:
item['id'] = key
newDf1 = pd.concat([newDf1, item])
print(key)
print(item)
回答:
newDf1.insert(0, 'New_ID', range(1, 1 + len(newDf1)))
newDf2= pd.DataFrame(columns=['Time', 'eleCur', 'id'])
for key, item in newDf1.groupby(['id']):
item['id'] = keyif item.shape[0] > 4000:
item = item[item["New_ID"] % 20 == 0]
elif item.shape[0] > 3000 :
item = item[item["New_ID"] % 15 == 0]
elif item.shape[0] > 2500:
item = item[item["New_ID"] % 12 == 0]
elif item.shape[0] > 2000 :
item = item[item["New_ID"] % 10 == 0]
elif item.shape[0] > 1000 :
item = item[item["New_ID"] % 8 == 0]
elif item.shape[0] > 500:
item = item[item["New_ID"] % 5 == 0]
elif item.shape[0] > 50 :
item = item[item["New_ID"] % 2 == 0]
else:
item = item
newDf2 = pd.concat([newDf2, item])
以上是 请问id相同的行超过50行,如果缩减为25行? 的全部内容, 来源链接: utcz.com/p/938638.html