我尝试从谷歌趋势中获取数据，并将其放入Google Sheets。第一次运行很顺利，但第二次就不太顺利了。我遇到了一个称为：
ValueError: No objects to concatenate
我以前在Stack Overflow上搜索过这个错误，但没有找到任何解决方案。我使用下面显示的代码：
!pip install Pytrends
!pip install pandas
!pip install pytrends --upgrade <---------Note: this solved a different error.
from pytrends.request import TrendReq
import pandas as pd
import time
startTime = time.time()
pytrend = TrendReq(hl='nl-NL', tz=360)
df = wb = gc.open_by_url('https://docs.google.com/spreadsheets/d/1QE1QilM-GDdQle6eVunepqG5RNWv39xO0By84C19Ehc/edit?usp=sharing')
sheet = wb.sheet1
df2 = sheet.col_values(5)
d_from = sheet.acell('B7').value
d_to = sheet.acell('B8').value
geo1 = sheet.acell('B10').value
dataset = []
for x in range(1,len(df2)):
keywords = [df2[x]]
pytrend.build_payload(
kw_list=keywords,
cat=0,
timeframe= str(d_from + " " + d_to),
geo= str(geo1))
data = pytrend.interest_over_time()
if not data.empty:
data = data.drop(labels=['isPartial'],axis='columns')
dataset.append(data)
result = pd.concat(dataset, axis=1)
result.to_csv('search_trends_DOWNLOAD_ME.csv')
!cp search_trends_DOWNLOAD_ME.csv "/content/drive/My Drive/Colab Notebooks/Output"
executionTime = (time.time() - startTime)
print('Execution time in sec.: ' + str(executionTime))
我收到的错误信息：
ValueError Traceback (most recent call last)
<ipython-input-5-b86c7b4df727> in <module>()
25 data = data.drop(labels=['isPartial'],axis='columns')
26 dataset.append(data)
---> 27 result = pd.concat(dataset, axis=1)
28 result.to_csv('search_trends_DOWNLOAD_ME.csv')
29 get_ipython().system('cp search_trends_DOWNLOAD_ME.csv "/content/drive/My Drive/Colab Notebooks/Output"')
1 frames
/usr/local/lib/python3.6/dist-packages/pandas/core/reshape/concat.py in __init__(self, objs, axis, join, keys, levels, names, ignore_index, verify_integrity, copy, sort)
327
328 if len(objs) == 0:
--> 329 raise ValueError("No objects to concatenate")
330
331 if keys is None:
ValueError: No objects to concatenate
我使用的关键字位于df = wb = gc.open_by_url中。这是一个包含位置、语言和关键字的 Google 表格。