python - Pandas 自相关函数错误 : 'DataFrame' object has no attribute 'autocorr'

Question

我想在 Google 趋势历史数据中找到自相关。非官方 API 使用 Pandas Dataframes，我决定为其使用其内置的自相关函数，代码如下:

from pytrends.request import TrendReq

z = ["animales"]

google_username = "xxx@gmail.com"
google_password = "xxxxxxxxx"
path = ""

pytrend = TrendReq(google_username, google_password, custom_useragent='')

pytrend.build_payload(kw_list=z, timeframe='today 5-y', geo='MX')

interest_over_time_df = pytrend.interest_over_time()

print(interest_over_time_df[z].autocorr(lag=1))

这以前有效，但我不确定我更改了什么，我的代码抛出以下错误:

Traceback (most recent call last):
  File "C:/Users/Rafael/PycharmProjects/untitled/test.py", line 19, in <module>
     print(interest_over_time_df[z].autocorr(lag=1))
  File "C:\Users\Rafael\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pandas\core\generic.py", line 2744, in __getattr__
    return object.__getattribute__(self, name)
AttributeError: 'DataFrame' object has no attribute 'autocorr'

Answer 1

some_dataframe["col_name"] 返回一个 Series。 some_dataframe[["col_name"]] 返回一个 DataFrame。 autocorr is a Series function .