如何将Wikipedia wikitable转换为Python Pandas DataFrame？

Question

在维基百科中,您可以找到一些有趣的数据进行排序,过滤,...

这是一个wikitable的样本

{| class="wikitable sortable"
|-
! Model !! Mhash/s !! Mhash/J !! Watts !! Clock !! SP !! Comment
|-
| ION || 1.8 || 0.067 || 27 ||  || 16 || poclbm;  power consumption incl. CPU
|-
| 8200 mGPU || 1.2 || || || 1200 || 16 || 128 MB shared memory, "poclbm -w 128 -f 0"
|-
| 8400 GS || 2.3 || || ||  ||  || "poclbm -w 128"
|-
|}

我正在寻找一种方法将这些数据导入Python Pandas DataFrame

Answer 1

下面是一个使用的解决方案PY-wiki标记语言和PyQuery提取所有表作为大熊猫DataFrames从wiki标记语言字符串,忽略不表的内容.

import wikimarkup
import pandas as pd
from pyquery import PyQuery

def get_tables(wiki):
    html = PyQuery(wikimarkup.parse(wiki))
    frames = []
    for table in html('table'):
        data = [[x.text.strip() for x in row]
                for row in table.getchildren()]
        df = pd.DataFrame(data[1:], columns=data[0])
        frames.append(df)
    return frames

鉴于以下输入,

wiki = """
=Title=

Description.

{| class="wikitable sortable"
|-
! Model !! Mhash/s !! Mhash/J !! Watts !! Clock !! SP !! Comment
|-
| ION || 1.8 || 0.067 || 27 ||  || 16 || poclbm;  power consumption incl. CPU
|-
| 8200 mGPU || 1.2 || || || 1200 || 16 || 128 MB shared memory, "poclbm -w 128 -f 0"
|-
| 8400 GS || 2.3 || || || || || "poclbm -w 128"
|-
|}

{| class="wikitable sortable"
|-
! A !! B !! C
|-
| 0
| 1
| 2
|-
| 3
| 4
| 5
|}
"""

get_tables 返回以下DataFrames.

       Model Mhash/s Mhash/J Watts Clock  SP                                     Comment
0        ION     1.8   0.067    27        16        poclbm;  power consumption incl. CPU
1  8200 mGPU     1.2                1200  16  128 MB shared memory, "poclbm -w 128 -f 0"
2    8400 GS     2.3                                                     "poclbm -w 128"

 

   A  B  C
0  0  1  2
1  3  4  5