我有以下代码试图迭代一些项目:
这是输入(单行)
操作,SKU,ITEM_NAME,UPC,EAN,BRAND_NAME
filename=open("WebstoreItemTemplate.csv").read()
template=csv.reader(filename,delimiter=',')
for row in template:
print row
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我期待输出看起来一样,如:
['operation','sku','item_name','upc,ean','brand_name']
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相反,我收到以下输出,每个字母被视为一个列表.我已经验证该文件是csv格式,所以我不确定我做错了什么.
['o']
['p']
['e']
['r']
['a']
['t']
['i']
['o']
['n']
['', '']
['s']
['k']
['u']
['', '']
['i']
['t']
['e']
['m']
['_']
['n']
['a']
['m']
['e']
['', '']
['u']
['p']
['c']
['', '']
['e']
['a']
['n']
['', '']
['b']
['r']
['a']
['n']
['d']
['_']
['n']
['a']
['m']
['e']
Run Code Online (Sandbox Code Playgroud) 我有一个pandas列,其中列出了各种长度的值,如下所示:
idx lists
0 [1,3,4,5]
1 [2]
2 [3,5]
3 [2,3,5]
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我想将它们转换成矩阵格式,其中每个可能的值代表一列,如果该值存在,则每一行填充1,否则填充0,例如:
idx 1 2 3 4 5
0 1 0 1 1 1
1 0 1 0 0 0
2 0 0 1 0 1
3 0 1 1 0 1
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我以为这个术语是一种热编码,但是我尝试使用pd.get_dummies方法,该方法指出它可以进行一热编码,但是当我尝试提供上述输入时:
test_hot = pd.Series([[1,2,3],[3,4,5],[1,6]])
pd.get_dummies(test_hot)
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我收到以下错误:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/opt/anaconda3/lib/python3.7/site-packages/pandas/core/reshape/reshape.py", line 899, in get_dummies
dtype=dtype)
File "/opt/anaconda3/lib/python3.7/site-packages/pandas/core/reshape/reshape.py", line 906, in _get_dummies_1d
codes, levels = _factorize_from_iterable(Series(data))
File "/opt/anaconda3/lib/python3.7/site-packages/pandas/core/arrays/categorical.py", line 2515, …Run Code Online (Sandbox Code Playgroud) 我在 Pandas 数据框中有一列,其中包含大量标签列表:
>>> data['SPLIT'].head(10)
0 [33.23, 88.72, 38.93, E931.7, V09.0, 041.11, 5...
1 [99.04, 38.06, 39.57, 00.91, 55.69, V15.82, 27...
2 [96.04, 96.72, 401.9, 276.5, 584.9, 428.0, 507...
3 [96.6, 99.15, 99.83, V29.0, 765.15, 765.25, 77...
4 [96.71, 96.04, 54.12, 99.60, 38.93, 99.15, 53....
5 [88.72, 37.61, 39.61, 36.15, 36.12, 272.0, 401...
6 [38.93, 88.72, 37.31, 272.4, 719.46, 722.0, 31...
7 [88.72, 39.61, 35.71, 272.4, V12.59, 458.29, 7...
8 [97.44, 99.04, 88.56, 37.23, 39.95, 38.95, 00....
9 [00.14, 89.61, …Run Code Online (Sandbox Code Playgroud) 我为论坛游戏构建了一个网络爬虫,其中玩家使用 [b] 粗体 [/b] 标签中的特定关键字来发出命令。机器人的工作是遍历线程并记录所有玩家的命令,但是我遇到了一个问题,如果玩家 A 引用玩家 B 的帖子,机器人会读取引用中玩家 B 的命令并更新玩家 A 的桌子。
我找到了引用框的具体类名,但我不知道如何从整个帖子正文中删除该类。
我尝试使用 get_attribute('innerHTML') 将帖子转换为文本,并使用正则表达式成功将其删除,但是我编写的用于提取粗体标签的代码 (find_attribute_by_tag_name) 变得无效。
我有两个问题想请教在这里发帖的各位大神:
有没有办法从帖子正文中删除特定元素?我在谷歌上进行了搜索,但找不到有效的解决方案
否则,有没有办法可以将从 get_attribute('innerHTML') 获得的 HTML 转换回元素?
Run Code Online (Sandbox Code Playgroud)def ScrapPosts( driver ): posts=driver.find_elements_by_class_name("postdetails") print("Total number of posts on this page:", len(posts)) for post in posts: #print("username:",post.find_element_by_tag_name("Strong").text) username=post.find_element_by_tag_name("Strong").text.upper() #remove the quote boxes before sending to check command? post_txt=post.find_element_by_class_name("content") CheckCommand(post_txt, username)