cutwind的博客

# -*- coding: utf-8 -*- """ Created on Fri Jun 12 16:20:17 2020 @author: weiping """ import xgboost as xgb import lightgbm as lgb from sklearn.model_selection import train_test_split from 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 np import pandas as pd plt.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 pd import numpy as np df = 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 pd import numpy as np df1 = 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 pd import numpy as np data = 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]) ser ser.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...