python - 在Python列表中导入Excel列

Question

嗨，我有一个只有 1 列的 Excel 工作表，我想将该列导入到 python 中的列表中。 该列中有 5 个元素，全部包含类似“http://dl.dropboxusercontent.com/sh/hk7l7t1ead5bd7d/AAACc6yA_4MhwbaxX_dizyg3a/NT51-177/DPS_0321.jpg?dl=0 ”的 url。

我的代码

import requests
import csv
import xlrd

ls = []
ls1 = ['01.jpg','02.jpg','03.jpg','04.jpg','05.jpg','06.jpg']
wb = xlrd.open_workbook('Book1.xls')
ws = wb.sheet_by_name('Book1')
num_rows = ws.nrows - 1
curr_row = -1
while (curr_row < num_rows):
    curr_row += 1
    row = ws.row(curr_row)
    ls.append(row)

for each in ls:
    urlFetch = requests.get(each)
    img = urlFetch.content
    for x in ls1:
        file = open(x,'wb') 
        file.write(img)
        file.close()

现在它给了我错误:

Traceback (most recent call last):
  File     "C:\Users\Prime\Documents\NetBeansProjects\Python_File_Retrieve\src\python_file_retrieve.py", line   18, in <module>
urlFetch = requests.get(each)
  File "c:\Python34\lib\site-packages\requests-2.5.0-py3.4.egg\requests\api.py", line 65, in get
return request('get', url, **kwargs)
  File "c:\Python34\lib\site-packages\requests-2.5.0-py3.4.egg\requests\api.py", line 49, in request
response = session.request(method=method, url=url, **kwargs)
  File "c:\Python34\lib\site-packages\requests-2.5.0-py3.4.egg\requests\sessions.py", line 461, in request
    resp = self.send(prep, **send_kwargs)
  File "c:\Python34\lib\site-packages\requests-2.5.0-py3.4.egg\requests\sessions.py", line 567, in send
    adapter = self.get_adapter(url=request.url)
  File "c:\Python34\lib\site-packages\requests-2.5.0-py3.4.egg\requests\sessions.py", line 646, in get_adapter
    raise InvalidSchema("No connection adapters were found for '%s'" % url)
requests.exceptions.InvalidSchema: No connection adapters were found for '[text:'https://dl.dropboxusercontent.com/sh/hk7l7t1ead5bd7d/AAACc6yA_4MhwbaxX_dizyg3a/NT51-177/DPS_0321.jpg?dl=0']'

请帮忙

Answer 1

您的问题不在于读取 Excel 文件，而在于解析其中的内容。请注意，您的错误是从 Requests 库中抛出的？

requests.exceptions.InvalidSchema: No connection adapters were found for <url>

从错误中我们了解到，您从 Excel 文件中的每个单元格获取的 URL 也有一个 [text: 前缀 -

'[text:'https://dl.dropboxusercontent.com/sh/hk7l7t1ead5bd7d/AAACc6yA_4MhwbaxX_dizyg3a/NT51-177/DPS_0321.jpg?dl=0']'

这是 Requests 无法处理的，因为它不知道 URL 的协议(protocol)。 如果你这样做

requests.get('https://dl.dropboxusercontent.com/sh/hk7l7t1ead5bd7d/AAACc6yA_4MhwbaxX_dizyg3a/NT51-177/DPS_0321.jpg?dl=0')

您会得到适当的结果。

您需要做的只是从单元格中提取 URL。 如果您遇到问题，请向我们提供 Excel 文件中 URL 的示例