相关扩展库1#-*-coding:UTF-8-*-23#导入扩展库45importpandasaspd67importnumpyasnp创建空DataFrame对象1#自定义列名创建空DataFrame数据对象23df=pd.DataFrame(columns={"name":"","age":"","sex":"","score":"","rate":""})45print(df)67#EmptyDataFrame8#Columns:[name,age,sex,score,rate]9#Index:[]创建DataFrame对象的数组1#创建DataFrame对象的自定义数组23list_data=[['1','2','3']]45df=pd.DataFrame(list_data,columns=['first','second','third'])67print(df)89#firstsecondthird10#0123字典创建DataFrame对象1#自定义字典类型数据创建DataFarme对象23data_dict={'first_col':[1,2,3,4],'second_col':[5,6,7,8]}45df=pd.DataFrame(data_dict)67print(df)89#first_rowsecond_row10#01511#12612#23713#348文件返回DataFrame对象1#读取数据文件返回DataFrame对象23df=pd.read_csv('/usr/load/data.csv',split=',')45df=pd.read_csv('/usr/load/data.xls',sheet_name='data')67print(df)np创建DataFrame对象1#使用numpy科学计算库提供的二维数组创建DataFrame对象23data_array=np.random.rand(4,2)45df=pd.DataFrame(data_array,columns=['first','second'])67print(df)89#firstsecond10#00.4104130.51078811#10.7269560.64777512#20.5025730.22671413#30.9261170.124414去微信，python交流栈，获取资料，python看集中营期待你的加入~
