python dask AttributeError: 'Series' object has no attribute 'sort_values' python dask dataframe series 排序 升序和降序
1、python dask dataframe series 升序和降序
# conding:utf-8
import time
import dask.dataframe as dd
import dask.array as da
import gc
st = time.time()
# url:str="mysql+pymysql://root:123456@localhost:3306/getonroom" # &useSSL=true &serverTimezone=GMT%2B8 useUnicode=true ?characterEncoding=utf-8
# df1:dd.DataFrame = dd.read_sql_table("room1",uri=url,index_col="id")
# df2:dd.DataFrame = dd.read_sql_table("room2",uri=url,index_col="id",npartitions=4)
df1 = dd.read_csv('./data/room1.csv',sep=',',header=0,encoding='utf-8',dtype='object')
print(type(df1))
print(df1.columns)
# gen:dd.Series = df1.Gender
# print(df1.Gender.groupby(df1.Gender).count().size.compute())
re:dd.Series = df1.Gender.groupby(df1.Gender).count()
n:int = re.size.compute()
print(n)
# ds = re.nlargest(n) # 降序
ds = re.nsmallest(n) # 升序
print(ds.compute())
print(time.time()-st)
gc.collect()
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