cutwind的博客

# -*- coding: utf-8 -*-"""Created on Fri Jun 12 16:20:17 2020@author: weiping"""import xgboost as xgbimport lightgbm as lgb from sklearn.model_selection import train_test_splitfrom sklearn.metrics import *from sklearn.datasets import load_iri.

# -*- coding: utf-8 -*-"""Created on Tue Oct 29 09:27:37 2019@author: weiping"""import matplotlib.pyplot as plt import numpy as npimport pandas as pdplt.plot(np.arange(10))plt.show()fig,...

# -*- coding: utf-8 -*-"""Created on Mon Oct 28 17:30:22 2019@author: weiping"""val = 'a,b , gudd , tt'val.split(',')pp = [x.strip() for x in val.split(',')]pp''' 字符串连接 '''a,b,c,d = pp...

# -*- coding: utf-8 -*-"""Created on Mon Oct 28 14:26:56 2019@author: weiping"""import pandas as pdimport numpy as npdf = pd.DataFrame({'k1':['a']*3 + ['b']*4, 'k2':[2,2,...

# -*- coding: utf-8 -*-"""Created on Fri Oct 25 16:41:03 2019@author: weiping"""import pandas as pdimport numpy as npdf1 = pd.DataFrame({'name':['a','b','c','d','f','g'], ...

# -*- coding: utf-8 -*-"""Created on Thu Oct 24 17:03:08 2019@author: weiping"""import pandas as pdimport numpy as npdata = np.array([[1,3,5,7], ['a','b','c','d'], [2001,2002...

# -*- coding: utf-8 -*-"""Created on Thu Oct 24 11:18:32 2019@author: weiping"""import pandas as pd'''Series'''ser = pd.Series([3,5,-6,9])serser.values #series 的数据值ser.index #series的索引...

# -*- coding: utf-8 -*-"""Created on Mon Oct 21 09:59:52 2019@author: weiping"""import numpy as np '''一维数组'''data = [3,5,7,9]data*10 ## 结果是复制data10遍 data_n = np.array(data)data_n*10...