iSe*_*els 25 html python html-table beautifulsoup python-3.x
The problem
I'm trying to parse an HTML table with rowspans in it, as in, I'm trying to parse my college schedule.
I'm running into the problem where if the last row contains a rowspan, the next row is missing a TD where the rowspan is now that TD that is missing.
I have no clue how to account for this and I hope to be able to parse this schedule.
What I tried
Pretty much everything I can think of.
The result I get
[
{
'blok_eind': 4,
'blok_start': 3,
'dag': 4, # Should be 5
'leraar': 'DOODF000',
'lokaal': 'ALK C212',
'vak': 'PROJ-T',
},
]
Run Code Online (Sandbox Code Playgroud)
As you can see, there's a vak key with the value PROJ-T in the output snippet above, dag is 4 while it's supposed to be 5 (a.k.a Friday/Vrijdag), as seen here:

The result I want
A Python dict() that looks like the one posted above, but with the right value
Where:
day/ dag是1~5的int,表示周一〜周五block_start/ blok_start是表示课程开始时的int(时间块,表格的左侧)block_end/ blok_eind是一个int,表示课程结束的块classroom/ lokaal是课程所在的课堂代码teacher/ leraar是老师的IDcourse/ vak是课程的ID上述数据的基本HTML结构
<center>
<table>
<tr>
<td>
<table>
<tbody>
<tr>
<td>
<font>
TEACHER-ID
</font>
</td>
<td>
<font>
<b>
CLASSROOM ID
</b>
</font>
</td>
</tr>
<tr>
<td>
<font>
COURSE ID
</font>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</table>
</center>
Run Code Online (Sandbox Code Playgroud)
代码
HTML
<CENTER><font size="3" face="Arial" color="#000000">
<BR></font>
<font size="6" face="Arial" color="#0000FF">
16AO4EIO1B
</font> <font size="4" face="Arial">
IO1B
</font>
<BR>
<TABLE border="3" rules="all" cellpadding="1" cellspacing="1">
<TR>
<TD align="center">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial" color="#000000">
Maandag 29-08
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
Dinsdag 30-08
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
Woensdag 31-08
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
Donderdag 01-09
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
Vrijdag 02-09
</font> </TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>1</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
8:30
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
9:20
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=4 align="center" nowrap="1">
<TABLE>
<TR>
<TD width="50%" nowrap=1><font size="2" face="Arial">
BLEEJ002
</font> </TD>
<TD width="50%" nowrap=1><font size="2" face="Arial">
<B>ALK B021</B>
</font> </TD>
</TR>
<TR>
<TD colspan="2" width="50%" nowrap=1><font size="2" face="Arial">
WEBD
</font> </TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>2</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
9:20
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
10:10
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=4 align="center" nowrap="1">
<TABLE>
<TR>
<TD width="50%" nowrap=1><font size="2" face="Arial">
BLEEJ002
</font> </TD>
<TD width="50%" nowrap=1><font size="2" face="Arial">
<B>ALK B021B</B>
</font> </TD>
</TR>
<TR>
<TD colspan="2" width="50%" nowrap=1><font size="2" face="Arial">
WEBD
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>3</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
10:25
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
11:15
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=4 align="center" nowrap="1">
<TABLE>
<TR>
<TD width="50%" nowrap=1><font size="2" face="Arial">
DOODF000
</font> </TD>
<TD width="50%" nowrap=1><font size="2" face="Arial">
<B>ALK C212</B>
</font> </TD>
</TR>
<TR>
<TD colspan="2" width="50%" nowrap=1><font size="2" face="Arial">
PROJ-T
</font> </TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>4</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
11:15
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
12:05
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=4 align="center" nowrap="1">
<TABLE>
<TR>
<TD width="50%" nowrap=1><font size="2" face="Arial">
BLEEJ002
</font> </TD>
<TD width="50%" nowrap=1><font size="2" face="Arial">
<B>ALK B021B</B>
</font> </TD>
</TR>
<TR>
<TD colspan="2" width="50%" nowrap=1><font size="2" face="Arial">
MENT
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>5</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
12:05
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
12:55
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>6</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
12:55
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
13:45
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=4 align="center" nowrap="1">
<TABLE>
<TR>
<TD width="50%" nowrap=1><font size="2" face="Arial">
JONGJ003
</font> </TD>
<TD width="50%" nowrap=1><font size="2" face="Arial">
<B>ALK B008</B>
</font> </TD>
</TR>
<TR>
<TD colspan="2" width="50%" nowrap=1><font size="2" face="Arial">
BURG
</font> </TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>7</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
13:45
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
14:35
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=4 align="center" nowrap="1">
<TABLE>
<TR>
<TD width="50%" nowrap=1><font size="2" face="Arial">
FLUIP000
</font> </TD>
<TD width="50%" nowrap=1><font size="2" face="Arial">
<B>ALK B004</B>
</font> </TD>
</TR>
<TR>
<TD colspan="2" width="50%" nowrap=1><font size="2" face="Arial">
ICT algemeen Prakti
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>8</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
14:50
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
15:40
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=4 align="center" nowrap="1">
<TABLE>
<TR>
<TD width="50%" nowrap=1><font size="2" face="Arial">
KOOLE000
</font> </TD>
<TD width="50%" nowrap=1><font size="2" face="Arial">
<B>ALK B008</B>
</font> </TD>
</TR>
<TR>
<TD colspan="2" width="50%" nowrap=1><font size="2" face="Arial">
NED
</font> </TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>9</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
15:40
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
16:30
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
<TR>
<TD rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD align="center" rowspan="2" nowrap=1><font size="3" face="Arial">
<B>10</B>
</font> </TD>
<TD align="center" nowrap=1><font size="2" face="Arial">
16:30
</font> </TD>
</TR>
<TR>
<TD align="center" nowrap=1><font size="2" face="Arial">
17:20
</font> </TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
<TD colspan=12 rowspan=2 align="center" nowrap="1">
<TABLE>
<TR>
<TD></TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
</TR>
</TABLE>
<TABLE cellspacing="1" cellpadding="1">
<TR>
<TD valign=bottom> <font size="4" face="Arial" color="#0000FF"></TR></TABLE><font size="3" face="Arial">
Periode1 29-08-2016 (35) - 04-09-2016 (35) G r u b e r & P e t t e r s S o f t w a r e
</font></CENTER>
Run Code Online (Sandbox Code Playgroud)
蟒蛇
from pprint import pprint
from bs4 import BeautifulSoup
import requests
r = requests.get("http://rooster.horizoncollege.nl/rstr/ECO/AMR/400-ECO/Roosters/36"
"/c/c00025.htm")
daytable = {
1: "Maandag",
2: "Dinsdag",
3: "Woensdag",
4: "Donderdag",
5: "Vrijdag"
}
timetable = {
1: ("8:30", "9:20"),
2: ("9:20", "10:10"),
3: ("10:25", "11:15"),
4: ("11:15", "12:05"),
5: ("12:05", "12:55"),
6: ("12:55", "13:45"),
7: ("13:45", "14:35"),
8: ("14:50", "15:40"),
9: ("15:40", "16:30"),
10: ("16:30", "17:20"),
}
page = BeautifulSoup(r.content, "lxml")
roster = []
big_rows = 2
last_row_big = False
# There are 10 blocks, each made up out of 2 TR's, run through them
for block_count in range(2, 22, 2):
# There are 5 days, first column is not data we want
for day in range(2, 7):
dayroster = {
"dag": 0,
"blok_start": 0,
"blok_eind": 0,
"lokaal": "",
"leraar": "",
"vak": ""
}
# This selector provides the classroom
table_bold = page.select(
"html > body > center > table > tr:nth-of-type(" + str(block_count) + ") > td:nth-of-type(" + str(
day) + ") > table > tr > td > font > b")
# This selector provides the teacher's code and the course ID
table = page.select(
"html > body > center > table > tr:nth-of-type(" + str(block_count) + ") > td:nth-of-type(" + str(
day) + ") > table > tr > td > font")
# This gets the rowspan on the current row and column
rowspan = page.select(
"html > body > center > table > tr:nth-of-type(" + str(block_count) + ") > td:nth-of-type(" + str(
day) + ")")
try:
if table or table_bold and rowspan[0].attrs.get("rowspan") == "4":
last_row_big = True
# Setting end of class
dayroster["blok_eind"] = (block_count // 2) + 1
else:
last_row_big = False
# Setting end of class
dayroster["blok_eind"] = (block_count // 2)
except IndexError:
pass
if table_bold:
x = table_bold[0]
# Classroom ID
dayroster["lokaal"] = x.contents[0]
if table:
iter = 0
for x in table:
content = x.contents[0].lstrip("\r\n").rstrip("\r\n")
# Cell has data
if content != "":
# Set start of class
dayroster["blok_start"] = block_count // 2
# Set day of class
dayroster["dag"] = day - 1
if iter == 0:
# Teacher ID
dayroster["leraar"] = content
elif iter == 1:
# Course ID
dayroster["vak"] = content
iter += 1
if table or table_bold:
# Store the data
roster.append(dayroster)
# Remove duplicates
seen = set()
new_l = []
for d in roster:
t = tuple(d.items())
if t not in seen:
seen.add(t)
new_l.append(d)
pprint(new_l)
Run Code Online (Sandbox Code Playgroud)
Mar*_*ers 13
您必须跟踪前一行的rowpans,每列一个.
你可以简单地通过将rowspan的整数值复制到字典中来做到这一点,然后后续行减少rowspan值直到它降到1(或者我们可以存储整数值减1并且0为了便于编码而放下).然后,您可以根据前面的rowpans调整后续表计数.
通过使用大小为2的默认跨度,以2为单位递增,您的表稍微复杂一点,但可以通过除以2轻松地将其恢复为可管理的数字.
而不是使用大量的CSS选择器,只选择表行,我们将迭代这些:
roster = []
rowspans = {} # track rowspanning cells
# every second row in the table
rows = page.select('html > body > center > table > tr')[1:21:2]
for block, row in enumerate(rows, 1):
# take direct child td cells, but skip the first cell:
daycells = row.select('> td')[1:]
rowspan_offset = 0
for daynum, daycell in enumerate(daycells, 1):
# rowspan handling; if there is a rowspan here, adjust to find correct position
daynum += rowspan_offset
while rowspans.get(daynum, 0):
rowspan_offset += 1
rowspans[daynum] -= 1
daynum += 1
# now we have a correct day number for this cell, adjusted for
# rowspanning cells.
# update the rowspan accounting for this cell
rowspan = (int(daycell.get('rowspan', 2)) // 2) - 1
if rowspan:
rowspans[daynum] = rowspan
texts = daycell.select("table > tr > td > font")
if texts:
# class info found
teacher, classroom, course = (c.get_text(strip=True) for c in texts)
roster.append({
'blok_start': block,
'blok_eind': block + rowspan,
'dag': daynum,
'leraar': teacher,
'lokaal': classroom,
'vak': course
})
# days that were skipped at the end due to a rowspan
while daynum < 5:
daynum += 1
if rowspans.get(daynum, 0):
rowspans[daynum] -= 1
Run Code Online (Sandbox Code Playgroud)
这会产生正确的输出:
[{'blok_eind': 2,
'blok_start': 1,
'dag': 5,
'leraar': u'BLEEJ002',
'lokaal': u'ALK B021',
'vak': u'WEBD'},
{'blok_eind': 3,
'blok_start': 2,
'dag': 3,
'leraar': u'BLEEJ002',
'lokaal': u'ALK B021B',
'vak': u'WEBD'},
{'blok_eind': 4,
'blok_start': 3,
'dag': 5,
'leraar': u'DOODF000',
'lokaal': u'ALK C212',
'vak': u'PROJ-T'},
{'blok_eind': 5,
'blok_start': 4,
'dag': 3,
'leraar': u'BLEEJ002',
'lokaal': u'ALK B021B',
'vak': u'MENT'},
{'blok_eind': 7,
'blok_start': 6,
'dag': 5,
'leraar': u'JONGJ003',
'lokaal': u'ALK B008',
'vak': u'BURG'},
{'blok_eind': 8,
'blok_start': 7,
'dag': 3,
'leraar': u'FLUIP000',
'lokaal': u'ALK B004',
'vak': u'ICT algemeen Prakti'},
{'blok_eind': 9,
'blok_start': 8,
'dag': 5,
'leraar': u'KOOLE000',
'lokaal': u'ALK B008',
'vak': u'NED'}]
Run Code Online (Sandbox Code Playgroud)
此外,即使课程跨度超过2个街区,或只有一个街区,此代码仍将继续有效; 支持任何rowspan大小.
| 归档时间: |
|
| 查看次数: |
1562 次 |
| 最近记录: |