摘要： # -*- coding: utf-8 -*- # 代码11-1 import os import pandas as pd # 修改工作路径到指定文件夹 os.chdir("D:/chapter11/demo") # 第一种连接方式 from sqlalchemy import create_en 阅读全文

摘要： import numpy as np import pandas as pd import matplotlib.pyplot as plt data=pd.read_excel('../data/original_data.xls') # 查看有无水流的分布 # 数据提取 lv_non = pd. 阅读全文

摘要： import numpy as np import pandas as pd data=pd.read_csv('../data/GoodsOrder.csv') data.info() #查看数据属性 data = data['id'] description = [data.count(),da 阅读全文

摘要： import pandas as pd import numpy as np import matplotlib.pyplot as plt import seaborn as sn data=pd.read_csv('../data/air_data.csv') explore=data.desc 阅读全文

摘要： import numpy as np import pandas as pd import matplotlib.pyplot as plt data=pd.read_csv('./data/data.csv') data #%% x=data.iloc[:,0:-1] y=data.iloc[:, 阅读全文

摘要： import numpy as np import pandas as pd import matplotlib.pyplot as plt path='./data/catering_sale.xls' data = pd.read_excel(path, index_col = u'日期') # 阅读全文

摘要： Tensorflow 的求梯度函数： [db, dW, dx] = tf.gradient(C, [b, w, x]) 在调试时用处较大。 import tensorflow as tf import numpy as np w1 = tf.Variable(2.0) w2 = tf.Variabl 阅读全文

摘要： import pandas as pd import numpy as np import matplotlib.pyplot as plt def sigmoid(x): # 定义网络激活函数 return 1/(1+np.exp(-x)) data_tr = pd.read_csv('C:/Us 阅读全文

摘要： import wx from python实验2 import classinformation class MyFrame(wx.Frame): def __init__(self,parent,id): wx.Frame.__init__(self,parent,id,title="班级信息收集 阅读全文

摘要： 运行超市抹零结账行为 money_all=56.75+72.91+88.50+26.37+68.51money_all_str=str(money_all)print("商品总金额为："+money_all_str)money_real=int(money_all)money_real_str=st 阅读全文