pandas:DataFrname

一

https://www.cnblogs.com/YingLai/p/9291768.html 

cd 到csv文件目录下
df = pd.read_csv('fiename.csv')  # 读取csv文件方式一
 # 读取csv文件方式er
df = open('filename.csv')
df.read()


#写入文件
df.to_csv("newfilename.csv")

二

https://www.cnblogs.com/YingLai/p/9300775.html

import  requests
import json
import pandas as pd
class Write_to_excel():
    def get_data(self,url):
        response=requests.get(url).content
        data=json.loads(response)
        return data['data']
    def write_csv(self,filename):
        df.to_csv(filename)
    def read_csv(self,filename):
        df_read=pd.read_csv(filename)  # 读取csv文件方式一
        # 读取csv文件方式er
        # df = open('filename.csv')
        # df.read()
        return df_read

if __name__ == '__main__':
    url=r'http://10.99.3.21/tp/zsfnd/gettabledata?table=db_zndt.tb_ip_invest'
    tt=Write_to_excel()
    data=tt.get_data(url)
    # # for i in data:
    # #     print(i)
    df=pd.DataFrame(data)

    print(df.shape)
    gina=df.describe() # 获取快速统计
    # #更改字段名
    # df=df.rename(columns={'index_period_type':'index_period_gina'})
    # # # df.rename(columns={'旧的列名': '新的列名'})
    # print(df)
    # print(gina,type(gina))
    # print(df.to_dict('records'))#将dataframe 转换成字典
    filename = r'E:\转换开发2021\newfilename.csv'
    # tt.write_csv(filename)
    dd=tt.read_csv(filename)
    dd=dd.to_dict('records')
    for i in dd:
        print(i)

　　

三

https://www.cnblogs.com/YingLai/p/9302739.html   学习