1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
>>> import io
>>> from mechanize import _opener, HTTPError
Normal case. Response goes through hook function and is returned.
>>> def urlopen(fullurl, data=None, timeout=None):
... print("fullurl %r" % fullurl)
... print("data %r" % data)
... return "response"
>>> def response_hook(response):
... print("response %r" % response)
... return "processed response"
>>> _opener.wrapped_open(urlopen, response_hook,
... "http://example.com", "data"
... )
fullurl 'http://example.com'
data 'data'
response 'response'
'processed response'
Raised HTTPError exceptions still go through the response hook but
the result is raised rather than returned.
>>> def urlopen(fullurl, data=None, timeout=None):
... print("fullurl %r" % fullurl)
... print("data %r" % data)
... raise HTTPError(
... "http://example.com", 200, "OK", {}, io.BytesIO())
>>> def response_hook(response):
... print("response class %s" % response.__class__.__name__)
... return Exception("processed response")
>>> try:
... _opener.wrapped_open(urlopen, response_hook,
... "http://example.com", "data"
... )
... except Exception as exc:
... print(exc)
fullurl 'http://example.com'
data 'data'
response class HTTPError
processed response
Other exceptions get ignored, since they're not response objects.
>>> def urlopen(fullurl, data=None, timeout=None):
... print("fullurl %r" % fullurl)
... print("data %r" % data)
... raise Exception("not caught")
>>> try:
... _opener.wrapped_open(urlopen, response_hook,
... "http://example.com", "data"
... )
... except Exception as exc:
... print(exc)
fullurl 'http://example.com'
data 'data'
not caught
|
