我正在尝试使用 python 和 twill 在 PubMed 数据库上自动进行搜索，但现在我在让一个搜索工作时遇到了问题。我的基本代码如下所示：
from twill.commands import *
go("http://www.pubmed.com")
fv("1","term","macropahge")
showforms()
当我运行它时，我得到这个输出：
Form name=EntrezForm (#1)
## ## __Name__________________ __Type___ __ID________ __Value__________________
1 None select database [] of []
2 None select database [] of ['gquery']
3 None select database [] of ['assembly']
4 None select database [] of ['bioproject']
5 None select database [] of ['biosample']
6 None select database [] of ['biosystems']
7 None select database [] of ['books']
8 None select database [] of ['clinvar']
9 None select database [] of ['clone']
10 None select database [] of ['cdd']
11 None select database [] of ['gap']
12 None select database [] of ['dbvar']
13 None select database [] of ['epigenomics']
14 None select database [] of ['nucest']
15 None select database [] of ['gene']
16 None select database [] of ['genome']
17 None select database [] of ['gds']
18 None select database [] of ['geoprofiles']
19 None select database [] of ['nucgss']
20 None select database [] of ['homologene']
21 None select database [] of ['medgen']
22 None select database [] of ['mesh']
23 None select database [] of ['ncbisearch']
24 None select database [] of ['nlmcatalog']
25 None select database [] of ['nuccore']
26 None select database [] of ['omim']
27 None select database [] of ['pmc']
28 None select database [] of ['popset']
29 None select database [] of ['probe']
30 None select database [] of ['protein']
31 None select database [] of ['proteinclusters']
32 None select database [] of ['pcassay']
33 None select database [] of ['pccompound']
34 None select database [] of ['pcsubstance']
35 None select database [] of ['pubmed']
36 None select database [] of ['pubmedhealth']
37 None select database [] of ['snp']
38 None select database [] of ['sra']
39 None select database [] of ['structure']
40 None select database [] of ['taxonomy']
41 None select database [] of ['toolkit']
42 None select database [] of ['toolkitall']
43 None select database [] of ['toolkitbook']
44 None select database [] of ['unigene']
45 term text term macropahge
46 1 None submi ... search
47 EntrezSystem2.PEntre ... hidden (None) home
48 EntrezSystem2.PEntre ... hidden (None)
49 EntrezSystem2.PEntre ... hidden (None) pubmed
50 EntrezSystem2.PEntre ... hidden (None) pubmed
51 EntrezSystem2.PEntre ... hidden (None)
52 EntrezSystem2.PEntre ... hidden (None)
53 EntrezSystem2.PEntre ... hidden (None)
54 EntrezSystem2.PEntre ... hidden (None)
55 EntrezSystem2.PEntre ... hidden (None)
56 EntrezSystem2.PEntre ... hidden (None)
57 EntrezSystem2.PEntre ... hidden (None)
58 EntrezSystem2.PEntre ... hidden (None)
59 EntrezSystem2.PEntre ... hidden (None)
60 EntrezSystem2.PEntre ... hidden (None)
61 EntrezSystem2.PEntre ... hidden (None)
62 p$a hidden p$a
63 p$l hidden p$l EntrezSystem2
64 p$st hidden p$st pubmed
65 SessionId hidden SessionId CE8B4A8E3C997DA1_0124SID
66 Snapshot hidden Snapshot /projects/entrez/pubmed/PubMedGroup@1.54
<generator object __call__ at 0x030B8170>
所以我知道我的代码正确输入了搜索词，但是当我提交时，它不起作用。
submit()
find("macrophage")
Traceback (most recent call last):
File "<pyshell#5>", line 1, in <module>
find("macrophage")
File "C:\Users\Ed\AppData\Roaming\Python\Python27\site-packages\twill\commands.py", line 239, in find
raise TwillAssertionError("no match to '%s'" % (what,))
TwillAssertionError: no match to 'macrophage'
所以，我提交不正确或使用了错误的提交框。我知道当我搜索时，术语巨噬细胞会出现在页面上，所以在提交步骤中出现了问题。任何帮助表示赞赏。当我尝试使用诸如“;lkjasdlfkjasd”之类的垃圾短语时，我希望“未找到任何项目”，但我也没有看到。