我目前正在关注senddex的实用机器学习YouTube教程（顺便说一下，第3页）。我在尝试打印表格时遇到了一条我不明白的错误消息。以下是我的代码及其错误消息。
import pandas as pd
import quandl
import math
df = quandl.get('WIKI/GOOGL')
df = df[['Adj.Open', 'Adj.High', 'Adj.Low', 'Adj.Close', 'Adj.Volume',]]
df['HL_PCT'] = (df['Adj.High'] - df['Adj.Close'])/ df['Adj.Close'] *
100.0
df['PCT_change'] = (df['Adj.Close'] - df['Adj.Open'])/ df['Adj.Open'] *
100.0
df = df[['Adj.Close', 'HL_PCT', 'PCT_change', 'Adj.Volume']]
forecastcol = 'Adj. Close'
df. fillna(-99999, inplace=True)
forecast_out = int (math.ceil (0.1 * len(df)))
df['label'] = df[forecast_col].shift(-forecast_out)
print(df.head())
Traceback (most recent call last):
File "C:\Users\progr\AppData\Local\Programs\Python\Python37-32\regression.py", line 5, in <module>
df = quandl.get('WIKI/GOOGL')
File "C:\Users\progr\AppData\Local\Programs\Python\Python37-32\lib\site-packages\quandl\get.py", line 48, in get
data = Dataset(dataset_args['code']).data(params=kwargs, handle_column_not_found=True)
File "C:\Users\progr\AppData\Local\Programs\Python\Python37-32\lib\site-packages\quandl\model\dataset.py", line 47, in data
return Data.all(**updated_options)
File "C:\Users\progr\AppData\Local\Programs\Python\Python37-32\lib\site-packages\quandl\operations\list.py", line 15, in all
r = Connection.request('get', path, **options)
File "C:\Users\progr\AppData\Local\Programs\Python\Python37-32\lib\site-packages\quandl\connection.py", line 38, in request
return cls.execute_request(http_verb, abs_url, **options)
File "C:\Users\progr\AppData\Local\Programs\Python\Python37-32\lib\site-packages\quandl\connection.py", line 50, in execute_request
cls.handle_api_error(response)
File "C:\Users\progr\AppData\Local\Programs\Python\Python37-32\lib\site-packages\quandl\connection.py", line 114, in handle_api_error
raise klass(message, resp.status_code, resp.text, resp.headers, code)
我希望输出是一个值表，其标头为“ Adj”。关闭”，“ HL_PCT”等。