import pandas as pd
import numpy as np
# b=pd.Series([9,-3,4,2],index=['a','c','d','b'])
# b['v']=7
# print(b)
# b['v']=3
# print(b)
# # b=pd.Series()
# pp=100000
# print('data{i}.csv'.format(i=(pp%10000)))
print(np.arange(60))
# print(b)
# print(c)
# c=pd.Series([9,-3,5,2],index=['a','c','d','b'])
# l=[b,c]
# df=pd.DataFrame(l)
# print(df)
# ub1 = pd.date_range('2016-01-01','2016-01-31')
# print(ub1[:-1])
