out=groupby_sum.ix[:'to_uid','sum(diamonds)']
使用ix在提取數據的時候,out的數據類型通常為<class 'pandas.core.series.Series'>,即為Series類型。
但是Series類型沒有直接的to_excel方法(out.to_excel('data2.xlsx','Sheet1')),所以是不能直接寫入到文件中的,
解決辦法:
將Series轉化為DataFrame,然后再寫入問價中即可。
Series.
to_frame
(name=None)
注意事項:在pandas官方文檔的API Reference下有大量的類似知識,需要好好的研究。
#http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.to_frame.html
下面是一個demo:
# -*- coding: utf-8 -*- # Time : 2016/11/29 11:17 # Author : XiaoDeng # version : python3.5 # Software: PyCharm Community Edition import pandas as pd import numpy as np import matplotlib.pyplot as plt #裝載關系網UID uid_dict={} uid_list=[] for k in open('關系網data.txt'): k=k.strip() k=k.split('\t') uid=k[0]#即為需要查詢數據的某ID to_uid=k[1] #接收禮物的id uid_list.append(int(to_uid)) #注意:記得轉化為int類型 if uid not in uid_dict: uid_dict[uid]=[to_uid] else: uid_dict[uid].append(to_uid) # print(uid_dict) df=pd.read_csv('201611.csv') # print(df) intday=df['intday'] send_uid=df['send_uid']#送禮的人 to_uid=df['to_uid']#接收禮物的人 gid=df['gid']#禮物編號 sum_diamonds=df['sum(diamonds)'] #對應編號禮物的鑽石數合計 #過濾 # print(uid_list) guolv=df['to_uid'].isin(uid_list) s=df[guolv] # print(s) # s.to_excel('data2.xlsx','Sheet1') groupby_sum=s.groupby('to_uid').sum() # print(groupby_sum) #寫入文件 out=groupby_sum.ix[:'to_uid','sum(diamonds)'] print(type(out)) out=out.to_frame() # print(out) # out.to_excel('data2.xlsx','Sheet1',index=False)#不要索引 out.to_excel('data2.xlsx','Sheet1') if __name__=='__main__': pass