在项目测试中遇到了下拉框选择的控件，来总结下如何使用select选择下拉框：
下图是Select类的初始化描述，意思是，给定元素是得是select类型，不是就抛异常。接下来给了例子：要操作这个select，先要定位到，然后再通过 select_by_index 选择下拉框
def
__init__(
self
, webelement):
"""
Constructor. A check is made that the given element is, indeed, a SELECT tag. If it is not,
then an UnexpectedTagNameException is thrown.
:Args:
- webelement - element SELECT element to wrap
Example:
from selenium.webdriver.support.ui import Select \n
Select(driver.find_element_by_tag_name("select")).select_by_index(2)
"""
if webelement.tag_name.lower() !=
"select":
raise UnexpectedTagNameException(
"Select only works on
1、select_by_value:
看下代码：
def select_by_value(self, value):
"""Select all options that have a value matching the argument. That is, when given "foo" this
would select an option like:
Bar
:Args:
- value - The value to match against
throws NoSuchElementException If there is no option with specisied value in SELECT
"""
css = "option[value =%s]" % self._escapeString(value)
opts = self._el.find_elements(By.CSS_SELECTOR, css)
matched = False
for opt in opts:
self._setSelected(opt)
if not self.is_multiple:
return
matched = True
if not matched:
raise NoSuchElementException("Cannot locate option with value: %s" % value)
就是说使用这个方法，下拉框属性需要有value，如果选项中不具有指定值的项，就抛异常。例如：
2、select_by_index
看下代码：
1
def
select_by_index(self, index):
2
"""
Select the option at the given index. This is done by examing the "index" attribute of an
3
element, and not merely by counting.
4
5
:Args:
6
- index - The option at this index will be selected
7
8
throws NoSuchElementException If there is no option with specisied index in SELECT
9
"""
10
match =
str(index)
11
for
opt
in
self.options:
12
if
opt.get_attribute(
"
index
"
) ==
match:
13
self._setSelected(opt)
14
return
15
raise
NoSuchElementException(
"
Could not locate element with index %d
"
% index)
这个是通过元素的“index”属性来完成
3、select_by_visible_text
看下代码：
1
def
select_by_visible_text(self, text):
2
"""
Select all options that display text matching the argument. That is, when given "Bar" this
3
would select an option like:
4
5
Bar
6
7
:Args:
8
- text - The visible text to match against
9
10
throws NoSuchElementException If there is no option with specisied text in SELECT
11
"""
12
xpath =
"
.//option[normalize-space(.) = %s]
"
%
self._escapeString(text)
13
opts =
self._el.find_elements(By.XPATH, xpath)
14
matched =
False
15
for
opt
in
opts:
16
self._setSelected(opt)
17
if
not
self.is_multiple:
18
return
19
matched =
True
20
21
if
len(opts) == 0
and
"
"
in
text:
22
subStringWithoutSpace =
self._get_longest_token(text)
23
if
subStringWithoutSpace ==
""
:
24
candidates =
self.options
25
else
:
26
xpath =
"
.//option[contains(.,%s)]
"
%
self._escapeString(subStringWithoutSpace)
27
candidates =
self._el.find_elements(By.XPATH, xpath)
28
for
candidate
in
candidates:
29
if
text ==
candidate.text:
30
self._setSelected(candidate)
31
if
not
self.is_multiple:
32
return
33
matched =
True
34
35
if
not
matched:
36
raise
NoSuchElementException(
"
Could not locate element with visible text: %s
"
% text)
通过选择文本来匹配，然后给出了例子。看下我的例子：
我的代码：
1
stafftype_loc = (By.XPATH,
"
//select[@ng-model='Invite.type']
"
)
2
3
find_element(*self.stafftype_loc).send_keys(stftype)
